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                                                                    EXHIBIT 10.1

                            OPTION TO PURCHASE STOCK
                            ------------------------

            THIS  AGREEMENT  ENTERED  INTO  this ________________________ by and
between _______________________________________ (the "Seller" ), with a business
address at ___________________________________________,  and NYFIX  CORPORATION,
(the  "Purchaser"),  a Delaware  Corporation  with its  principal  office at 333
Ludlow Street, Stamford, CT 06902.

            WHEREAS,  the  Purchaser  is  desirous  of  obtaining  an  option to
purchase up to 800,000  Shares of Common Stock of Euro Link  Network,  Inc. from
the present  holders of such  Common  Stock with the  Company  having  1,200,000
shares authorized, issued, and outstanding as a result of these transactions and
800,000 shares to be issued for the  conversion of the Series A Preferred  Stock
for a total of 2,000,000 shares authorized or to be authorized; and

            WHEREAS,  the Seller is the owner of _______  Shares of Common Stock
of Euro Link Network,  Inc.,  subject to certain conditions which are summarized
herein; and

            WHEREAS,  the Seller is desirous of granting such option to purchase
a fixed amount of such Shares and Purchaser is desirous to obtain such option to
purchase a fixed amount of such Shares upon the terms and conditions  herein set
forth,

            WHEREAS,  Seller has  consented  to a share  reissuance  by Eurolink
Network,  Inc.  and Seller and  Purchaser  agree to this  Revised  Agreement  to
include the new shares issued to Seller,

            NOW, THEREFORE,

            IN  CONSIDERATION  of Ten Dollars  ($10.00) paid in hand,  and other
good and valuable consideration,  the receipt and sufficiency of which is hereby
acknowledged, the parties agree as follows:

            1.  GRANT  OF  OPTION.  Seller  hereby  grant to  Purchaser,  or its
designee  or  assign,  an option  to  purchase,  upon the  terms and  conditions
hereinafter  set forth,  _______  Shares  ("Shares") of the Common Stock of Euro
Link Network, Inc., a Delaware Corporation ("the Company"),  at a purchase price
which shall be the greater of the following:

                (i) At a  price-per-share  computed for the entire  Company on a
            per   share   basis   which   shall  be  equal  to  ten   times  the
            earnings-per-share for the preceding fiscal year prior to the timely
            option  notice,  as  shall  be  determined  by  generally   accepted
            accounting practices consistently applied. In computing the earnings
            per share,  all monies  paid by the  Company  prior to April 1, 2002
            related to establishment,  organizational  and licensing costs shall
            not  be  deducted  or  adversely  considered  in  any  manner  which
            diminishes the earnings per share price  including any  depreciation
            on capital  investments made prior to April 1, 2002. The exercise of
            this Option, divided by the number of shares then outstanding,  with
            a maximum purchase price of $12.50 per Share; or

                (ii) At a minimum price-per-share of $1.25.

                (iii) In no event shall the minimum  purchase price be less than
            US$1,000,000  for all of the shares for which the  Purchaser  has an
            option of the Company under Paragraph 2.

            2. TIME FOR  EXERCISE  OF OPTION.  The option  may be  exercised  by
Purchaser in whole or in part at any time on or after April 1, 2004 and prior to
June 30, 2004. In the event that audited financial statements of the Company are
not provided to Purchaser by April 1, 2004,  the option period shall be extended
to such date as shall be ninety (90) days  following the receipt by Purchaser of
such audited financial statements.

            3.  INTERIM  NON-CASH  DIVIDEND.  If  dividends  are declared on the
common  shares  of the  Company,  payable  other  than in  cash,  such  non-cash
dividends  attributable to each such common share shall be transferred by Seller
to Purchaser upon the exercise of his option, without extra costs.

            4. ADJUSTMENT OF OPTION SHARES. If the outstanding  common shares of
The Company  are changed  into or  exchanged  for a different  number or kind of
shares or other  securities  of The Company or of another  corporation,  whether
through reorganization, recapitalization, shares split up, combination of sales,
merger or consolidation, there shall be substituted for each common share of The
Company  then  subject  to this  option  the number and kinds of shares of other
securities  which each such  outstanding  common share is so changed or for each

such share as exchanged.  Thereafter,  the words "common  shares of The Company"
shall mean such  substituted  shares or other securities and the option price as
set forth in Paragraph (1) above  shall  apply to and be the option  price for a
the shares or other  securities  substitute  for each such  common  share of The
Company

            5. ADDITIONAL OPTION RIGHTS. Seller hereby grants to Purchaser,  for
a  period  of  five  (5)  years  from  the  date of this  Agreement,  an  option
constituting  a right of first  refusal to  purchase  any shares of The  Company
owned by the Seller  and not  subject  to  purchase  by  Purchaser  pursuant  to
Paragraph 1 of this Agreement, at a per share price equal to valuing 100% of the
Company and then  allocating  the 100% purchase price on a per share basis as to
the total number of shares of common stock of the Company then  outstanding with
the price per share equal to "____" shall be 10 times the earnings per share for
the  preceding 12 month  period as shall be  determined  by  generally  accepted
accounting  principles  consistently  applied.  In the event Purchaser elects to
exercise  such option,  Purchaser  shall have ten (10)  business days after such
notice is given by Seller  within which to notify the Seller that the  Purchaser
is exercising such an option and is delivering,  as provided in paragraph 8, the
funds and NYFIX shares  required for the purchase which the Purchaser shall have
elected to make.  If such notice and payment are  received by the Seller  within
said ten (10) day period,  the Seller,  in addition to delivery to the Purchaser
of the Company  shares so purchased by it,  shall  assign to the  Purchaser  the
rights  attributable  to such  shares.  The closing date for the exercise of the
option  shall be no later  than 20 days  from  the date of the  option  exercise
notice or notice of right of first refusal. If, however, the Purchaser shall not
so notify the Seller and pay such purchase  price,  the Seller shall be released
from any further obligation to the Purchaser in respect of such rights and shall
be free to sell such  shares of the  Company  to any person for any price in the
sole discretion of Seller.

            6. RESTRICTIONS ON TRANSFER;  REVERSION. Seller agrees that prior to
expiration date of the Option as set forth herein,  no Shares of Common Stock of
the Company  owned by Seller,  and whether or not subject to the Option,  may be
sold, encumbered,  hypothecated or otherwise transferred without the approval of
the Board of  Directors  of The  Company.  In the event that Seller  voluntarily
leaves the  employment of the Company or is  terminated  for cause except due to
death or major health  concerns as determined  in the sole  discretion of and by
the Company Board of Directors.,  it is agreed and understood that the Shares of
the Company  issued to Seller shall  revert to the Company,  and shall either be
held by the Company in treasury or  redistributed to employees of the Company in
the sole  discretion  of the Board of  Directors.  In the case of death or major
health approved by the Company Board of Directors,  the successor in interest to
the Seller or designated  representative  shall be subject to the same terms and
conditions as all other Sellers of Company Shares.

            7. RESTRICTIONS ON CORPORATE ACTION. Except as provided in Paragraph
6 amoung existing  Shareholders of the Company,  The Seller agrees that prior to
June 30,  2004 the  Company  will not  issue  additional  Shares  of  Common  or
Preferred Stock, Warrants, or Options, nor sell or transfer any Shares of Common
Stock  between or among the  shareholders  of the  Company,  without the written
consent  of  holders  of a  majority  of the  issued  and  outstanding  Series A
Convertible Stock and the Board of Directors of the Company.

            8. RIGHT OF FIRST REFUSAL.  (a) In the event that Purchaser does not
exercise  its option,  it has granted the Company the right of first  refusal to
acquire any Shares of Common Stock of the Company owned by the Purchaser.

               (b) In the event  that  Purchaser  does  exercise  its option and
subsequently  sells its  controlling  interest  in the  Company,  it agrees that
Seller  shall  have  the  right to sell all or part of  Seller's  shares  of the
Company on the same per share  price/benefit  as  Purchaser  with respect to any
Shares of Common Stock of the Company  owned by Seller on the date of such sale,
but that Seller shall not be required to participate in any such sale.

            9. TIME OF PAYMENT FOR SHARES. At the election of the Seller,  which
shall be stated in writing by the Seller  within five (5) days of receipt of the
option notice,  the option price of the Shares to be purchased  pursuant to each
exercise of the Option shall be paid as follows:  (i) Fifty  Percent (50%) shall
be  payable in cash,  and a  non-cash  part shall be payable in shares of Common
Stock of NYFIX,  Inc. at a valuation  which shall be equal to the 30 day average
NYFIX  closing  price  immediately  preceding  the date of the  exercise  of the
option;  and (ii) Fifty Percent (50%) shall be payable in shares of Common Stock
of NYFIX,  Inc. at a valuation  which shall be equal to the 30 day average NYFIX

closing  price  immediately  preceding the date of the notice of exercise of the
option.  Provided however,  Seller may elect to have the cash part of the option
price paid pay in cash and part in NYFIX  shares.  NYFIX,  Inc.  shares  will be
issued to Seller and  delivered to Seller at Closing.  NYFIX,  Inc.  agrees that
within 180 days  following the date of exercise of the Option,  it will cause to
be  filed  with the U.S.  Securities  and  Exchange  Commission  a  Registration
Statement  which will register for public sale the shares of NYFIX,  INC. Common
Stock  issued as partial  payment of the option  price which shall be  completed
within 60 days of filing.

            10. METHOD OF EXERCISING OPTION. At least ten (10) days prior to the
date upon  which  all or any  portion  of the  option  is to be  exercised,  the
Purchaser shall deliver to the Seller written notice of its election to exercise
the option,  which  notice  shall  specify the date and time for the transfer of
shares  pursuant  to the  exercise  of the  option  and the  number of shares in
respect  of which the  option is to be  exercised.  The date  specified  in such
notice  shall be a business  day,  the time  specified  shall be during  regular
business  hours.  The closing  date for the  exercise of the option  shall be no
later than 10 days from the date of the option exercise notice.  The closing and
payment  with  respect to the Company  shares for which an option is  exercised,
shall be conducted at the offices of Whisenand & Turner, P.A. in Miami, Florida,
or the  headquarters  of NYFIX or such other place as the  parties may  mutually
agree.

            11. PAYMENT AND DELIVERY OF SHARES.  The Purchaser shall at the date
and time  specified in such  notice,  deliver a bank,  cashier's or  treasurer's
check and duly  issued  NYFIX  shares in the name of the Seller in the amount of
the option price for the Company  shares in respect to which the option is being
exercised.  Such  delivery  shall  be made to the  Seller  at such  place  as is
designated  by  Purchase in the notice of exercise of option at either the NYFIX
headquarters or Whisenand & Turner PA in Miami, Florida or as mutually agreed by
the Purchase  and Seller.  and all checks shall be drawn to the order of Seller.
Contemporaneously with such payments and delivery of NYFIX shares to Seller, the
Seller shall deliver to the Purchaser, duly endorsed in proper form for transfer
certificates  representing  the common shares of The Company in respect of which
the option is being exercised.

            12. NOTICES. All notices and other communications provided hereunder
shall be in writing and shall be deemed to have been duly given if  delivered or
mailed certified mail or overnight courier.

               (a) If to the Seller at: ________________________________________
               (b) If to the Purchaser at: 333 Ludlow Street, Stamford, CT 06902

            13.  MODIFICATION.  This Agreement shall be effective as of the date
hereof,  and unless  sooner  terminates  shall remain  until June 30,  2004.  No
modification or amendment to this Agreement shall be effective unless in writing
and signed by the parties.

            14.  GOVERNING LAW. This Agreement shall be deemed to be governed by
and shall be construed in accordance with the laws of the State of Delaware.

            15. BINDING  EFFECT.  This Agreement shall be binding upon and inure
to the benefit of the Seller and its  successors  and assigns and the  Purchaser
and its successors and assigns.

            16.  TERMINATION  OF PRIOR  AGREEMENT.  The prior Option to Purchase
Stock Agreement  entered into between  Purchaser and Seller is hereby terminated
and declared by both Parties to be null and of no force or effect.

            IN WITNESS  WHEREOF the parties  have  caused this  Agreement  to be
executed as of the day and year first above written.

SELLER:                                 ______________________________________

                                        ---------------------------------------
                                        By:  Authorized Representative

PURCHASER:                              NYFIX, INC.

                                        By: -----------------------------------
                                            Authorized Representative

Terms and Conditions Agreed:
EURO LINK NETWORK, INC.

By:/s/ Humberto Toro Batlle
-----------------------------
Authorized Representative

                                                  Number      Number
                                Date of         of Shares       of
                               Purchase          Owned by     Option    Authorized Representative
Seller's Name and Address        Option           Seller      Shares          of Seller
-------------------------      --------        -------------  ------    -------------------------

Tercer Milenio Comercial      March 1, 2002       502,320     334,880   /s/ Humberto Toro Batlle
   Advicer, s.l.
1500 Bay Road, Suite 1202
Miami, FL 33139

Luis Felipe Cano              December 2, 2002    313,942     209,295   /s/ Luis Felipe Cano
501 Brickell Key Drive,
Suite 602
Miami, FL 33131

Tri Ventures, Inc.            March 1, 2002       150,960     100,640   /s/ James D. Whisenand
501 Brickell Key Drive,
Suite 602
Miami, FL 33131

Index Intelligence, s.l.      December 2, 2002    130,353      86,902   /s/ Juan Carlos Nieto
3003 Van Ness St.
N.W., AW412
Washington, DC 20008

Steven R. Karpel              March 1, 2002        60,233      40,155   /s/ Steven R. Karpel
7302 S.W. 132nd Place
Miami, FL 33183

Josefina Angel Lopez          March 1, 2002        30,192      20,128   /s/ Josefina Angel Lopez
501 Brickell Key Drive,
Suite 602
Miami, FL 33131

Theo Hildyard                 December 2, 2002     12,000       8,000   /s/ Theo Hildyardsec document

                                                                    EXHIBIT 10.2

                               PURCHASE AGREEMENT

            Purchase  Agreement,  dated as of September 26, 2003 (the "Effective
Date"),  by and between NYFIX,  Inc., a New York Corporation (the "Buyer"),  and
the other signatories hereto (each individually a "Seller" and collectively, the
"Sellers").

            WHEREAS,  after conversion of that certain $1.5 million  Convertible
Secured  Promissory  Note,  dated as of October 2, 2002,  payable by Renaissance
Trading Technologies,  LLC (the "Company") to Buyer, into 6,400,000 units of the
Company's  membership  interests  ("Units"),  occurring  simultaneously with the
purchase  contemplated by this Agreement,  the Buyer owns 8,200,000  outstanding
Units;

            WHEREAS,  taking  into  account  the  conversion  described  in  the
immediately preceding "whereas" clause, the Sellers in the aggregate own 50%, or
8,200,000,  of the outstanding Units, which constitute all the outstanding Units
not owned by Buyer; and

            WHEREAS,  the  Sellers  desire  to sell,  and the  Buyer  wishes  to
purchase,  all of such  8,200,000  Units  owned by  Sellers,  upon the terms and
subject to the conditions hereafter set forth.

            NOW,  THEREFORE,   in  order  to  implement  the  foregoing  and  in
consideration of the mutual  agreements  contained  herein,  the parties hereto,
intending to be legally bound, hereby agree as follows:

Section 1.  SALE OF SECURITIES.

            1.1  AGREEMENT  TO PURCHASE  AND SELL.  The Buyer  hereby  agrees to
purchase an aggregate of 8,200,000 Units, constituting all the outstanding Units
not currently  owned by Buyer (the  "Purchased  Units"),  and the Sellers hereby
agree to sell all of their Purchased Units,  for $5,972,500  ($6,000,000 less an
adjustment of $27,500 in accordance with Section 8.7) in aggregate consideration
(approximately $.72835 per Unit), as follows:

            (a) that number of shares of NYFIX  common  stock,  par value $0.001
per share ("NYFIX Common Stock,  which,  when  multiplied by the price per share
determined in accordance with the Valuation Method (as defined in Section 1.1(e)
below),   constitutes  the  equivalent  value  of  approximately  33.3%  of  the
consideration  for the Purchased  Units for each Seller electing to receive such
shares,  with the number of shares of NYFIX  Common Stock to be  distributed  to
each such Seller noted below such  Seller's  signature  line,  and with all such
shares subject to the selling restrictions noted in Section 5.1(b) below;

            (b)(i) an  unsecured  promissory  note for  $663,611.11  payable  to
Daniel J. Ryan on December  31, 2004 (in the form  attached as Exhibit A) and an
unsecured  promissory  note for $663,611.11  payable to Ken DeGiglio  payable on

                                       1

December 31, 2004 (in the form attached as Exhibit A) in either, at NYFIX's sole
discretion:  (w) cash; or (x) that number of shares of NYFIX Common Stock which,
when  multiplied  by the price  per  share  determined  in  accordance  with the
Valuation Method  constitutes the equivalent value of $663,611.11,  constituting
the balance of the consideration, respectively, for the 1,366,666.67 Units owned
by Mr.  Ryan  and the  1,366,666.67  Units  owned by Mr.  DeGiglio;  and (ii) an
unsecured  promissory  note (in the form  attached as Exhibit B) payable to each
Seller  electing to receive such note in the amount  listed below the  signature
line for each such Seller,  payable in equal  installments  (before rounding) on
each of July 1, 2004, July 1, 2005, July 1, 2006 and July 1, 2007, in either, at
NYFIX's sole discretion:  (y) cash; or (z) that number of shares of NYFIX Common
Stock which,  when  multiplied  by the price per share  determined in accordance
with the Valuation  Method  constitutes the equivalent value of the cash payment
otherwise due on each such payment date, constituting approximately 33.3% of the
consideration for the Purchased Units set forth below the signature line of each
such Seller.

            (c) 462,286 shares of NYFIX Common Stock,  which, when multiplied by
the  price  per  share  determined  in  accordance  with  the  Valuation  Method
constitutes the equivalent  value of  $2,654,444.44,  to be placed in trust with
The Bank of New York ("Trustee") in accordance with the Trust Agreement attached
as Exhibit C, with the  redistribution  and  selling  restrictions  set forth in
Section  5.1(b)  below  for such  shares  while  held in trust,  and  thereafter
redistributed in accordance with such Trust Agreement,  constituting the balance
of the  consideration  for the  5,466,666.66  Units owned by Sellers  other than
Messrs. Ryan and DeGiglio as noted below the signature lines for such Sellers.

            (d) The  Buyer  and the  Sellers  acknowledge  and  agree  that  the
consideration   referred  to  in  subsections   1.1(a)  through  (c)  is  solely
consideration  for  purchase  by the  Buyer  of the  8,200,000  Purchased  Units
referred to in such subsections and is not  consideration  for employment either
before or after the Buyer's purchase of such Units.

            (e) "Valuation Method" means a price per share of NYFIX Common Stock
equal  to the  average  of the last  reported  sale  price of such  stock on the
primary exchange on which such stock is traded,  including Nasdaq, (or, if there
is no last reported sale price,  then the midpoint between the bid and the ask )
for the five most  immediately  prior  trading (or bid and ask  quotation)  days
ending on: (i) August 8, 2003 for  purposes of Sections  1.1(a) and (c),  namely
$5.742,  which is the average of the last  reported  sale price of NYFIX  Common
Stock on Nasdaq of $5.75 on August 4, 2003,  $5.74 on August 5,  2003,  $5.72 on
August 6,  2003,  $5.79 on August  7,  2003 and  $5.71 on August 8,  2003;  (ii)
December 31, 2004 for purposes of Section  1.1(b)(i);  and July 1, 2004, July 1,
2005, July 1, 2006 and July 1, 2007 for purposes of shares of NYFIX Common Stock
to be distributed on each such date for purposes of Section 1.1(b)(ii).

            (f) Whenever a  calculation  of the number of shares of NYFIX Common
Stock  results in a  fraction,  the number of such shares will be rounded to the
nearest whole number, whether up or down.

                                       2

Section 2.  REPRESENTATIONS AND WARRANTIES OF THE NON-MANAGEMENT SELLERS.

            Each of the Sellers, except Edward Brandman, Daniel Ryan and Kenneth
DeGiglio (the three  collectively the "Management  Sellers"),  severally and not
jointly, hereby represents and warrants to the Buyer that:

            2.1. VALIDITY. This Agreement has been duly and validly executed and
delivered by such Seller and constitutes a legal, valid and binding agreement of
such  Seller,  enforceable  against  such Seller in  accordance  with its terms,
except as enforceability may be affected by applicable bankruptcy, insolvency or
similar  laws  relating  to  or  affecting  creditors'  rights  generally  or by
equitable principles.

            2.2. NO CONSENTS;  NO  CONTRAVENTION.  The  execution,  delivery and
performance by such Seller of this Agreement does not require any authorization,
consent,  approval  or  action  by  or  in  respect  of,  or  filing  with,  any
governmental body, agency, official or other person and does not contravene,  or
constitute a default under,  any provision of applicable law or regulation or of
any agreement,  judgment, order, decree or other instrument to which such Seller
is a party or by which such Seller is bound.

            2.3.  GOOD  AND  TRANSFERABLE   TITLE.  Such  Seller  has  good  and
transferable  title to his or her Units, and such Units will be transferred free
and  clear  of  any  lien,  pledge,  mortgage,   charge,  security  interest  or
encumbrance of any kind  ("Encumbrances"),  except for  Encumbrances  imposed by
federal and state securities laws.

            2.4.  INVESTOR STATUS.  (a) With respect to the acquisition of NYFIX
Common  Stock   contemplated   under  Sections   1.1(a)  through  (c)  above  as
consideration  for the sale to NYFIX of  Units,  each of  Sellers  Joshua  Moses
Diamond, Assunta Gaglione-Austin,  Pravin Khanolkar, Steven Lunt, Linda Moutinho
and Uday Patel is acquiring such Common Stock for himself or herself and not for
resale or  redistribution  to  another  Person and is an  "accredited  investor"
within the  meaning  of Rule 501 of  Regulation  D of the Rules and  Regulations
promulgated under the Securities Act of 1933, as amended (the "Securities Act").
(b) With respect to the  acquisition  of NYFIX Common Stock  contemplated  under
Sections  1.1(a)  through  (c) above as  consideration  for the sale to NYFIX of
Units, each of Sellers Elaine Chui,  Tasneem Hakim,  Brett Hanulak,  Safal Naik,
Heather Nguyen, Jyothi Rajagopal,  Pitambar Sarangi, Sunil Ravindra,  Sujay Tase
and Prasann Sujay is acquiring  such Common Stock for himself or herself and not
for resale or  redistribution  to  another  Person  and has such  knowledge  and
experience  in  financial  and  business  matters that such Seller is capable of
evaluating  the  merits  and  risks of the  acquisition  of NYFIX  Common  Stock
pursuant to this Agreement.

            2.5. RESTRICTED SECURITIES.  Each Seller understands that the shares
of NYFIX Common Stock being  acquired by such Seller  pursuant to this Agreement
are  characterized  as "restricted  securities" as defined under Rule 144 of the
Rules and Regulations  promulgated under the Securities Act, and understands the
resale limitations imposed by such rule.

                                       3

            2.6 NO UNDISCLOSED COMPENSATION OR PAYMENTS.  Except as disclosed on
the Buyer's,  the Management Sellers' and such Seller's copy of Schedule 2.6 and
except for  compensation  reflected in the Company's  payroll system and payroll
checks,  the Company has made no agreements,  promises or  commitments,  whether
written or oral, with or to such Seller regarding salary,  bonuses,  guarantees,
securities  options,  benefits or any other  compensation or payment of any kind
whatsoever, whether accrued, contingent,  absolute, determined,  determinable or
otherwise.

            2.7.  DISCLOSURE.  No  representation,  warranty or statement by any
Seller made in this Agreement  contains any untrue  statement of a material fact
or omits to state a material  fact  necessary to make the  statements  contained
herein,  in  light  of  the  circumstances  under  which  they  were  made,  not
misleading.

Section 3.  REPRESENTATIONS AND WARRANTIES OF THE MANAGEMENT SELLERS.
            ---------------------------------------------------------

            Each  of the  Management  Sellers,  jointly  and  severally,  hereby
represents and warrants to the Buyer that:

            3.1. ORGANIZATION; GOOD STANDING. The Company is a limited liability
company duly organized,  validly existing and in good standing under the laws of
the State of Delaware and has all requisite  limited liability company power and
authority  to carry on its  business  as now  conducted  and as  proposed  to be
conducted.  The Company is duly  qualified  to transact  business and is in good
standing in each  jurisdiction  in which the failure so to qualify  would have a
material adverse effect on its business or properties.

            3.2. VALIDITY. This Agreement has been duly and validly executed and
delivered by such Seller and constitutes a legal, valid and binding agreement of
such  Seller,  enforceable  against  such Seller in  accordance  with its terms,
except as enforceability may be affected by applicable bankruptcy, insolvency or
similar  laws  relating  to  or  affecting  creditors'  rights  generally  or by
equitable principles.

            3.3. NO CONSENTS;  NO  CONTRAVENTION.  The  execution,  delivery and
performance by such Seller of this Agreement does not require any authorization,
consent,  approval  or  action  by  or  in  respect  of,  or  filing  with,  any
governmental body, agency, official or other person and does not contravene,  or
constitute a default under,  any provision of applicable law or regulation or of
any agreement,  judgment, order, decree or other instrument to which such Seller
is a party or by which such Seller is bound.

            3.4. CAPITALIZATION.  The outstanding capital of the Company, taking
into account the  conversion  described  in the first  "whereas"  clause  above,
consists of 16,400,000  Units, 50% of which are owned by Buyer and the remaining

                                       4

50% of which are owned, in the aggregate, by the Sellers. Except as set forth on
the copies of the Buyer's and  Management  Sellers'  Schedule 3.4,  there are no
other  Units  or  Company  securities  and  there  are no  outstanding  options,
warrants,  rights (including  conversion or preemptive rights) or agreements for
the  purchase or  acquisition  from the Company of any  membership  interests or
other  securities  of the Company.  The Company is not a party or subject to any
agreement  or   understanding  of  any  kind,  and  there  is  no  agreement  or
understanding  of any kind  between any  individual,  corporation,  partnership,
limited liability company,  association,  trust or other entity or organization,
including a government or political  subdivision or an agency or instrumentality
thereof (a "Person"),  which affects or relates to the acquisition,  disposition
or voting or giving of written  consents  with  respect to any  security  of the
Company.  The Company has no subsidiaries and does not currently own or control,
directly or  indirectly,  any  interest in any Person,  except for  ownership of
60,000 shares of NYFIX Common Stock.

            3.5.  GOOD  AND  TRANSFERABLE   TITLE.  Such  Seller  has  good  and
transferable  title to his or her Units, and such Units will be transferred free
and clear of any  Encumbrance,  except for  Encumbrances  imposed by federal and
state securities laws.

            3.6. NO LITIGATION. (a) There is no action, suit, proceeding, review
or  investigation  pending or to the  Management  Sellers'  knowledge  currently
threatened  against or affecting the Company (nor, to their knowledge,  is there
any reasonable  basis  therefore);  (b) the Company is not a party or subject to
the provisions of any rule, order, writ,  injunction,  judgment or decree of any
court,  arbitrator or government agency or instrumentality;  and (c) there is no
action, suit, proceeding,  review or investigation  involving the Company or any
of the Sellers which such parties intend to initiate.

            3.7. INVESTOR STATUS.  With respect to such Seller's  acquisition of
NYFIX Common  Stock  contemplated  under  Sections  1.1(a)  through (c) above as
consideration  for the sale to NYFIX of such  Seller's  Units,  such  Seller  is
acquiring  such  Common  Stock for  himself  or  herself  and not for  resale or
redistribution to another Person and is: (a) an "accredited investor" within the
meaning of Rule 501 of  Regulation  D of the Rules and  Regulations  promulgated
under the Securities Act of 1933, as amended (the "Securities  Act"); or (b) has
such knowledge and experience in financial and business matters that such Seller
is capable of evaluating the merits and risks of the acquisition of NYFIX Common
Stock pursuant to this Agreement.

            3.8. RESTRICTED SECURITIES.  Each Seller understands that the shares
of NYFIX Common Stock being  acquired by such Seller  pursuant to this Agreement
are  characterized  as "restricted  securities" as defined under Rule 144 of the
Rules and Regulations  promulgated under the Securities Act, and understands the
resale limitations imposed by such rule.

            3.9.  FINANCIAL  STATEMENTS.  Attached as Exhibit D is a copy of the
Company's  unaudited  financial  statements as of and for the eight-month period
ending August 31, 2003 (the "Financial  Statements").  The Financial  Statements
were prepared in accordance with GAAP,  applied on a consistent basis during the
periods  involved and fairly present in accordance with applicable  requirements

                                       5

of GAAP (subject,  in the case of the unaudited  statements,  to normal year-end
adjustments  and the  absence of  footnotes)  the  position of the Company as of
August 31, 2003 and the results of  operations  and the cash flow of the Company
for the periods presented therein.  Except for transactions  undertaken by NYFIX
on behalf of the Company and not  disclosed  to the  Company's  CEO or CFO,  the
Financial  Statements do not contain any untrue  statement of a material fact or
omit to  state a  material  fact  necessary  to make  the  statements  contained
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.

            3.10.  ABSENCE OF CERTAIN CHANGES OR EVENTS.  Except as disclosed in
Schedule  3.10  or as  disclosed  in or  reflected  on the  Company's  Financial
Statements,  since  August  31,  2003,  there has not been (a) any  declaration,
setting aside or payment of any distribution of any kind whatsoever  (whether in
cash or other  property) with respect to any of the Company's  capital;  (b) any
amendment  of any  material  term  of any  outstanding  equity  security  of the
Company;  (c) any repurchase,  redemption or other acquisition by the Company of
any  outstanding  Units or other  ownership  interests in the  Company;  (d) any
material  change in any  method of  accounting  or  accounting  practice  by the
Company; or (e) a Material Adverse Effect. A "Material Adverse Effect" means any
effect  or  change  that is or  would be  materially  adverse  to the  business,
operations,  assets, condition (financial or otherwise) or results of operations
of the Company (other than changes in the United States economy generally).

            3.11. NO DEFAULT.  Except as disclosed in Schedule 3.11, the Company
is not in default or violation (and no event has occurred which,  with notice or
the lapse of time or both, would constitute a default or violation) of any term,
condition  or  provision  of (a)  its  Articles  of  Organization  or  Operating
Agreement,  as  amended  from  time to  time,  (b)  any  note,  bond,  mortgage,
indenture,  license, agreement or other obligation to which the Company is now a
party or by which any of its  property  or assets may be bound or (c) any order,
writ, injunction, decree, statute, rule or regulation applicable to the Company.

            3.12.  COMPLIANCE  WITH  APPLICABLE  LAWS.  The  Company  holds  all
permits, licenses,  variances,  exemptions,  orders, franchises and approvals of
all Governmental  Entities necessary for the lawful conduct of its business (the
"Company  Permits") and is in material  compliance with the terms of the Company
Permits.  The business of the Company is not being conducted in violation of any
law,  ordinance or regulation of any  Governmental  Entity,  except for any such
violation  that  would  not have a  Material  Adverse  Effect  on the  Company's
business,  operations or financial  conditions.  "Governmental Entity" means any
U.S.  or  non-U.S.   court,   administrative   agency  or  commission  or  other
governmental authority or instrumentality.

            3.13. NO UNDISCLOSED  MATERIAL  LIABILITIES AND NO DEBT  SECURITIES.
Except  as  disclosed  in the  copies of the  Buyer's  and  Management  Sellers'
Schedule  3.13 or in the  Company's  Financial  Statements,  the Company has not
issued any debt securities and there are no material  liabilities of the Company
of any kind  whatsoever,  whether  accrued,  contingent,  absolute,  determined,
determinable or otherwise.

                                       6

            3.14.   PAYMENT  OF  ALL  TAX   LIABILITIES;   NO  UNDISCLOSED   TAX
LIABILITIES.

            With  respect  to  Sections  3.14(a)  through  (i),  to the  best of
Management Sellers' knowledge and information:

            (a) The Company has (i) timely (taking into account any  extensions)
filed in correct  form all federal and all  material  state,  local and non-U.S.
returns,  declarations,  reports, estimates,  information returns and statements
("Returns")  required  to be filed by or with  respect  to it in  respect of any
Taxes ( as defined below),  (ii) timely paid all Taxes that are due and payable,
(iii) established  reserves that are included in the July 31, 2003 balance sheet
in the Financial  Statements  that are adequate for the payment of all Taxes not
yet due and payable  with  respect to the results of  operations  of the Company
through the date of such balance  sheet,  and (iv) complied in all respects with
all  applicable  laws,  rules  and  regulations  relating  to  the  payment  and
withholding of Taxes and has in all respects timely withheld from employee wages
and paid over to the proper governmental  authorities all amounts required to be
so withheld and paid over.

            (b)  The   Company  has  not  been  the  subject  of  any  audit  or
investigation by any federal,  state,  local or non-U.S.  taxing  authority.  No
federal, state, local or non-U.S. Tax audits or other administrative proceedings
or court  proceedings  are presently  pending with regard to any Taxes for which
the Company would be liable,  and no notice of any deficiency for any such Taxes
has been proposed,  asserted or assessed in writing against and delivered to the
Company by any federal,  state, local or non-U.S.  taxing authority with respect
to any period.

            (c) The  Company  (i) has not  executed  or  entered  into  with the
Internal Revenue Service ("IRS") or any other taxing authority (x) any agreement
or other  document  extending or having the effect of  extending  the period for
assessments  or collection of any Taxes for which the Company would be liable or
(y) a closing agreement pursuant to Section 7121 of the Internal Revenue Code of
1986,  as amended  (the  "Code") or any  similar  provision  of state,  local or
non-U.S.  Tax law that relates to the assets or operations of the Company,  (ii)
has not made a change in method of accounting  for a taxable period ending on or
prior to the  Effective  Date and (iii) has not sold  assets on the  installment
method.

            (d) There are no liens or security interests on any of the Company's
assets that arose in connection  with any failure or alleged  failure to pay any
Tax other than for Taxes which are not yet delinquent.

            (e) The Company is not a party to an agreement that provides for the
payment of any amount that would  constitute  a "parachute  payment"  within the
meaning  of Section  280G of the Code,  a copy of which is  attached  as part of
Exhibit E.

            (f) The Company has not made an election under Section 341(f) of the
Code or agreed to have Section 341(f)(2) of the Code apply to any disposition of
a  subsection  (f) asset (as such term is defined in  Section  341(f)(4)  of the
Code)  owned by the  Company.  A copy of all Code  sections  referred  to in the
immediately preceding sentence is attached as part of Exhibit E.

                                       7

            (g) The Company is not bound by nor has any obligation under any tax
sharing agreement, tax indemnity agreement or similar agreement or arrangement.

            (h) The Company has not  participated in any  international  boycott
within the  meaning of Section  999 of the Code,  a copy of which is attached as
part of Exhibit E.

            (i) The Company has not been a United States real  property  holding
corporation  within  the  meaning of Section  897(c)(2)  of the Code  during the
applicable period specified in Section  897(c)(1)(A)(ii)  of the Code, a copy of
each such section being attached as part of Exhibit E.

            (j) "Taxes"  means all federal,  state,  local,  non-U.S.  and other
taxes, charges, fees, levies,  imposts,  duties,  licenses or other assessments,
together with any interest,  penalties,  additions to tax or additional  amounts
imposed by any taxing authority.

            3.15 NO UNDISCLOSED COMPENSATION OR PAYMENTS. Except as disclosed in
the copies of the Buyer's and the Management  Sellers'  Schedule 3.13 and except
for compensation reflected in the Company's payroll system and matters reflected
in the  Financial  Statements,  the  Company  has not  entered  into or made any
agreements,  promises or  commitments,  whether written or oral, with any Person
regarding salary, bonuses, guarantees, securities options, benefits or any other
compensation or payment of any kind  whatsoever,  whether  accrued,  contingent,
absolute, determined, determinable or otherwise.

            3.16.  DISCLOSURE.  No representation,  warranty or statement by any
Management  Seller made in this  Agreement  contains  any untrue  statement of a
material fact or omits to state a material fact necessary to make the statements
contained herein, in light of the circumstances  under which they were made, not
misleading.

SECTION 4.  REPRESENTATIONS AND WARRANTIES OF THE BUYER.
            -------------------------------------------

            The Buyer hereby represents and warrants to the Seller that:

            4.1. VALIDITY. This Agreement has been duly and validly executed and
delivered by the Buyer and constitutes a legal,  valid and binding  agreement of
the Buyer, enforceable against the Buyer in accordance with its terms, except as
enforceability may be affected by applicable  bankruptcy,  insolvency or similar
laws  relating to or  affecting  creditors'  rights  generally  or by  equitable
principles.

            4.2. NO CONSENTS;  NO  CONTRAVENTION.  The  execution,  delivery and
performance by the Buyer of this  Agreement does not require any  authorization,
consent,  approval  or  action  by  or  in  respect  of,  or  filing  with,  any

                                       8

governmental body, agency, official or other Person and does not contravene,  or
constitute a default under,  any provision of applicable law or regulation or of
any agreement, judgment, order, decree or other instrument to which the Buyer is
a party or by which the Buyer is bound.

            4.3. RESTRICTED SECURITIES. The Buyer understands that the Units are
characterized as "restricted  securities" as defined under Rule 144 of the Rules
and Regulations promulgated under the Securities Act, and understands the resale
limitations imposed by such rule.

            4.4  INVESTOR  STATUS.  With respect to Buyer's  acquisition  of the
Units from Sellers contemplated in this Agreement, Buyer is acquiring such Units
for  itself  and not for resale or  redistribution  to another  Person and is an
"accredited  investor"  within the  meaning of Rule 501 of  Regulation  D of the
Rules and Regulations promulgated under the Securities Act.

            4.5. TITLE TO SHARES OF NYFIX COMMON STOCK. Assuming the validity of
the Seller  representations  and  warranties in Sections 2.3, 2.4, 2.5, 3.5, 3.7
and 3.8, the shares of NYFIX Common Stock,  when issued in  compliance  with the
provisions  of this  Agreement and with the  provisions of the Trust  Agreement,
will  have  been  authorized  and  validly  issued,   will  be  fully  paid  and
nonassessable,  will have been issued in  compliance  with all  applicable  laws
concerning  the  issuance  of  securities,  and  will be free  and  clear of any
Encumbrances; provided, however, that such shares may be subject to restrictions
on transfer under applicable  securities laws,  Section 5.1(b) of this Agreement
and Section 11(a) of the Trust Agreement.

            4.6. DISCLOSURE.  No representation,  warranty or statement by Buyer
made in this Agreement contains any untrue statement of a material fact or omits
to state a material fact necessary to make the statements  contained  herein, in
light of the circumstances under which they were made, not misleading.

SECTION 5.  REGISTRATION RIGHTS.
            -------------------

            5.1.  REGISTRATION OF THE SHARES;  LOCK-UP.  (a) The shares of NYFIX
Common Stock received by the Sellers as  consideration  for the Units ("Shares")
shall not be  initially  registered  under the  Securities  Act and shall bear a
legend in the following form or as otherwise reasonably determined by Buyer:

            "THESE  SECURITIES  HAVE NOT  BEEN  REGISTERED  UNDER  THE
            SECURITIES ACT OF 1933, AS AMENDED.  THEY MAY NOT BE SOLD,
            OFFERED FOR SALE,  PLEDGED OR  HYPOTHICATED IN THE ABSENCE
            OF A REGISTRATION  STATEMENT  UNDER THE ACT IN EFFECT WITH
            RESPECT  TO THESE  SECURITIES  OR AN  OPINION  OF  COUNSEL
            REASONABLY   SATISFACTORY   TO  THE   COMPANY   THAT  SUCH
            REGISTRATION IS NOT REQUIRED."

                                       9

The  Buyer  hereby  agrees  to file a  registration  statement  pursuant  to the
Securities  Act,  covering  the resale of all of the Shares  (the  "Registration
Statement") by the Sellers (each a "Selling  Stockholder"  and  collectively the
"Selling  Stockholders")  before  the first  date (as  listed  below in  Section
5.1(b)) on which any Seller may  distribute  or offer for sale any  Shares.  The
Buyer will use its reasonable best efforts to cause such Registration  Statement
to be declared  effective by the U.S.  Securities and Exchange  Commission  (the
"SEC") as soon as  practicable  after such filing.  The Buyer also agrees to use
its  reasonable  best  efforts  to keep  the  Registration  Statement  effective
(including  the  preparation  and  filing  of  any  amendments  and  supplements
necessary  for  that  purpose)   during  the  period  from  the  date  that  the
Registration Statement is declared effective by the SEC until the earlier of (i)
the date on which the Selling Stockholders shall have sold all of the Shares and
(ii) the date on which all of the Shares are eligible to be sold or  transferred
without holding period or volume limitations,  pursuant to Rule 144 of the Rules
and Regulations  promulgated under the Securities Act (the "Effective  Period").
The Buyer agrees to provide to each Selling  Stockholder the number of copies of
the final prospectus and any amendments or supplements thereto as are reasonably
requested  by such  Selling  Stockholder.  The Buyer shall  promptly  notify the
Selling  Stockholders  of  any  threatened  stop  order  by  the  SEC  or if the
Registration  Statement ceases to be effective for any reason at any time during
the Effective  Period,  and Buyer shall use its reasonable best efforts and take
all  reasonable  actions  required to prevent the entry of such stop order or to
obtain the prompt withdrawal of any order suspending the effectiveness thereof.

            (b) Notwithstanding the effectiveness of the Registration Statement,
each  of the  Sellers  hereby  agrees  that he or she  shall  not,  directly  or
indirectly, sell, offer to sell, contract to sell, transfer, pledge, hypothecate
or otherwise  transfer,  distribute or dispose (each a "Transfer") of any of the
Shares,  except  pursuant to the  following  schedule or any of Sections  5.1(c)
through (f) below:

                                             % of Shares Permitted to be
                  Dates                               Transferred
                  -----                               -----------

Prior to July 1, 2004                                     0%

Commencing July 1, 2004 and prior to
            July 1, 2005                     up to  25% of the  Shares  of  such
                                             Seller set forth in Section  1.1(a)
                                             and up to 50% of the Shares of such
                                             Seller set forth in Section 1.1(c)

Commencing July 1, 2005 and prior to
           July 1, 2006                      up to an  aggregate  of  50% of the
                                             Shares of such  Seller set forth in
                                             Section   1.1(a)   and   up  to  an
                                             aggregate  of 100% of the Shares of
                                             such  Seller  set forth in  Section
                                             1.1(c)

                                       10

Commencing July 1, 2006 and prior to         up to an  aggregate  of  75% of the
           July 1, 2007                      Shares of such  Seller set forth in
                                             Section   1.1(a)   and   up  to  an
                                             aggregate  of 100% of the Shares of
                                             such  Seller  set forth in  Section
                                             1.1(c)

Commencing July 1, 2007                      up to an  aggregate  of 100% of the
                                             Shares of such  Seller set forth in
                                             Section   1.1(a)   and   up  to  an
                                             aggregate  of 100% of the Shares of
                                             such  Seller  set forth in  Section
                                             1.1(c)

            (c)   Notwithstanding   the  provisions  of  Section  5.1(b),  if  a
Registration Statement for the Shares has not been declared effective by the SEC
on or before July 1, 2004 for any  reason,  except for the action by NYFIX under
Section 5.2, five percent (5%) of the Shares of each Seller under Section 1.1(a)
that  otherwise  are  not   Transferable   before  July  1,  2005  shall  become
Transferable,  to the extent permitted by applicable securities laws, at the end
of each month that the effectiveness of such  Registration  Statement is delayed
beyond  July  1,  2004.  Shares  subject  to  the  Transfer  provisions  of  the
immediately  preceding  sentence  shall  first be  those  Shares  not  otherwise
Transferable  until July 1, 2007,  then those Shares not otherwise  Transferable
until July 1, 2006 and finally  those Shares not  otherwise  Transferable  until
July 1, 2005.

            (d)   Notwithstanding   the  provisions  of  Section  5.1(b),  if  a
Registration Statement for the Shares has not been declared effective by the SEC
on or before July 1, 2004 for any  reason,  except for the action by NYFIX under
Section 5.2,  five percent  (5%) of the Shares  placed in the Trust  pursuant to
Section 1.1(c) above, and remaining in the Trust after the distribution  made by
the Trustee in accordance with Section 5 of the Trust  Agreement,  shall be sold
by the  Trustee  for each  month  that  the  effectiveness  of the  Registration
Statement is delayed  beyond July 1, 2004;  provided that each such sale is made
upon the prior  written  instructions  of the  persons  who, at the time of such
instructions,  meet the eligibility  requirements  set forth in Exhibit B to the
Trust  Agreement  (the  "Eligibility   Requirements")  and  represent  at  least
two-thirds  of the  Units set forth in  Exhibit  A to the  Trust  Agreement  and
provided further that each such sale is permissible under applicable  securities
laws.

            (e)  Notwithstanding  the provisions of Section 5.1(b), with respect
to the shares placed in the Trust  pursuant to Section 1.1(c) above and upon the
prior written instructions of the persons who, at the time of such instructions,
meet the Eligibility Requirements and represent at least two-thirds of the Units
set  forth in  Exhibit A of the  Trust  Agreement,  the  Trustee  shall  sell or
exchange  all or any  portion  of the Shares  then held in the  Trust:  (i) in a
merger  or  consolidation  involving  the  Buyer,  where  the  Buyer  is not the
continuing or surviving corporation;  or (ii) in a tender offer for at least 50%

                                       11

of the capital stock of the Buyer;  provided that the Trustee shall  participate
in any such sale or exchange  only:  (x) in the event that the Buyer's  Board of
Directors approves,  and Buyer's  shareholders  holding a majority of the voting
power -- or such greater percentage as is specified in the Buyer's  then-current
certificate  of  incorporation  or  bylaws  or the law of the  Buyer's  state of
incorporation -- of Buyer's capital stock approve, of any such transaction;  and
(y) to the extent permitted under applicable securities laws.

            (f)  Notwithstanding  the provisions of Section 5.1(b), with respect
to the shares issued by the Buyer pursuant to Section 1.1(a) above,  each Seller
shall be permitted to sell or exchange all or a portion of such Seller's Shares:
(i) in a merger or consolidation involving the Buyer, where the Buyer is not the
continuing or surviving  corporation  or (ii) in a tender offer for at least 50%
of the capital stock of the Buyer;  provided that such Seller shall  participate
in any such sale or exchange  only:  (x) in the event that the Buyer's  Board of
Directors approves,  and Buyer's  shareholders  holding a majority of the voting
power -- or such greater percentage as is specified in the Buyer's  then-current
certificate  of  incorporation  or  bylaws  or the law of the  Buyer's  state of
incorporation -- of Buyer's capital stock approve, of any such transaction;  and
(y) to the extent permitted under applicable securities laws.

            (g)  Notwithstanding  the  provisions of Section 5.1(b) and with the
prior written  consent of Buyer with respect to each  transaction,  such consent
not to be  unreasonably  withheld or delayed with respect to Sellers who are not
subject to NYFIX's  policy on insider  trading at the time of such  transaction,
any Seller shall have the right to purchase and sell put and call options solely
for the purpose of hedging  risk with respect to the Shares in which such Seller
has an interest by reason of the  provisions  of Sections  1.1(a)  through  (c);
provided  that  neither  any  Seller  nor any  other  party to any such  hedging
transaction engages,  directly or indirectly,  in selling Buyer's stock short in
connection therewith.

            5.2. RESTRICTIONS OF REGISTRATION.  Notwithstanding  anything to the
contrary  contained in Section 5.1 above, if the Board of Directors of the Buyer
determines reasonably and in good faith that (i) such filing would jeopardize or
delay any plan by the Buyer to engage in any  acquisition  of assets (other than
in the ordinary course of business) or any merger,  consolidation,  tender offer
or other significant transaction,  (ii) such filing would require the disclosure
of  material  information  that the Buyer has a bona fide  business  purpose for
preserving as  confidential or (iii) at such time the Buyer is unable to comply,
for  reasons  beyond  its  reasonable  control,  with  the  filing  requirements
applicable to the requested registration, then the Buyer may postpone the filing
or the  effectiveness  of such  registration  statement until the earlier of the
date  that is 60 days  from the  Filing  Date or (x) the  date  upon  which  the
contemplated  transaction  is completed or abandoned,  (y) the date the material
information is otherwise disclosed to the public or ceases to be material or (z)
the date the Buyer is able to comply with the applicable filing requirements.

            5.3. BUYER  INDEMNIFICATION.  The Buyer agrees to indemnify,  to the
fullest  extent  permitted  by law,  each Seller  against  all  losses,  claims,
damages,  liabilities and expenses  (including,  but not limited to,  reasonable
attorneys' fees) to which such  indemnified  party may become subject insofar as
they are  caused  by, or arise out of, or are based  upon any  untrue or alleged

                                       12

untrue statement of a material fact contained in any registration statement, any
prospectus or  preliminary  prospectus  or any  amendment  thereof or supplement
thereto,  or any omission or alleged  omission to state  therein a material fact
required to be stated  therein or  necessary to make the  statements  therein in
light of the  circumstances  in which  they  were  made not  misleading,  except
insofar as the same are (i) caused by or  contained  in any written  information
furnished to the Buyer by a Seller  expressly  for use  therein,  (ii) caused by
such  Seller's  failure  to  deliver  a copy of the  registration  statement  or
prospectus or any amendment or supplement  thereto as required by the Securities
Act or (iii) caused by the use of a prospectus or preliminary  prospectus or any
amendment or  supplement  thereto after receipt of notice from the Buyer that it
should no longer be used.

            5.4 SELLER INFORMATION;  SELLER  INDEMNIFICATION.  Each Seller shall
furnish to the Buyer in writing such  information  and  affidavits  as the Buyer
reasonably  requests for use in connection with any such registration  statement
or prospectus  and, to the fullest  extent  permitted by law,  severally but not
jointly, will indemnify the Buyer, its directors,  officers and employees,  each
underwriter (if any) and each Person who controls the Buyer or such  underwriter
(within the meaning of the  Securities  Act or the  Securities  Exchange  Act of
1934, as amended) against any losses, claims, damages,  liabilities and expenses
(including,  but not  limited  to  reasonable  attorneys'  fees) to  which  such
indemnified party may become subject insofar as they are caused by, or arise out
of, or are based upon any untrue or alleged untrue  statement of a material fact
contained in the registration statement, prospectus or preliminary prospectus or
any amendment thereof or supplement thereto, or any omission or alleged omission
to state therein a material  fact required to be stated  therein or necessary to
make the  statements  therein in light of the  circumstances  in which they were
made not  misleading,  but only to the  extent  that such  untrue  statement  or
omission is  contained in any written  information  or affidavit so furnished in
writing by such Seller  expressly  for use therein or the failure by such Seller
to deliver a copy of the  registration  statement or  prospectus or amendment or
supplement  thereto as required by the  Securities  Act.  The  liability  of any
Seller  under this  Section 5.4 shall not in any event  exceed the net  proceeds
received  by such  Seller  from the sale of Shares  covered by the  Registration
Statement.

            5.5.    INDEMNIFICATION    PROCEDURE.   Any   Person   entitled   to
indemnification under Sections 5.3 or 5.4 above, will (i) use reasonable efforts
to give  prompt  written  notice to the  indemnifying  party of any  claim  with
respect to which it seeks  indemnification  and (ii) unless in such  indemnified
party's reasonable  judgment a conflict of interest between such indemnified and
indemnifying  parties  may  exist  with  respect  to  such  claim,  permit  such
indemnifying  party to assume the defense of such claim with counsel  reasonably
satisfactory to the indemnified party;  provided,  however,  that the failure of
any Person  entitled  to  indemnification  hereunder  to give such notice to the
indemnifying  party  shall not  constitute  a waiver  of,  or a  defense  of the
indemnifying party to, such Person's right to  indemnification  hereunder unless
such failure has a material adverse effect upon the indemnifying party's ability
to defend such action. If such defense is assumed,  the indemnifying  party will
not be subject to any liability for any settlement made by the indemnified party
without  its consent  (which  consent  will not be  unreasonably  withheld).  An

                                       13

indemnifying  party who is not entitled to, or elects not to, assume the defense
of a claim will not be  obligated  to pay the fees and expenses of more than one
counsel for all parties  indemnified by such indemnifying  party with respect to
such  claim,  unless  in the  reasonable  judgment  of any  indemnified  party a
conflict of interest may exist between such  indemnified  party and any other of
such  indemnified  parties  with  respect  to such  claim,  in which  event  the
indemnifying  party  will  pay the  fees and  expenses  of up to one  additional
counsel.

SECTION 6.  FURNISHING OF INFORMATION REGARDING NYFIX TO SELLERS.
            ----------------------------------------------------

            6.1. PUBLIC  INFORMATION  PROVIDED NYFIX  SHAREHOLDERS.  Each Seller
acknowledges and agrees that NYFIX at a reasonable time before execution of this
Agreement has provided to such Seller financial and other information that NYFIX
is required to provide its shareholders and file with the SEC in accordance with
the  Securities  and  Exchange  Act of  1934,  as  amended,  and the  Rules  and
Regulations  promulgated  thereunder,  including NYFIX's Proxy Statement for the
June 10, 2003 Annual Shareholders'  Meeting, 2002 Annual Report on Form 10-K and
First Quarter 2003 Form 10-Q.

            6.2.  OPPORTUNITY  TO HAVE NYFIX  ANSWER  SELLERS'  QUESTIONS.  Each
Seller  acknowledges  and agrees  that  NYFIX at a  reasonable  time  before the
execution of this  Agreement  has provided  such Seller the  opportunity  to ask
questions  and  receive  answers  concerning  the  terms and  conditions  of the
transactions  contemplated  by  this  Agreement  and to  obtain  any  additional
information that NYFIX has or can acquire without unreasonable effort or expense
to  verify  the  accuracy  of  information  furnished  to Seller as set forth in
Section 6.1.

SECTION 7.  CONDITIONS PRECEDENT.
            --------------------

            7.1.  CONDITIONS  OF  OBLIGATIONS  OF  EACH  PARTY.  The  respective
obligation  of each party to execute this  Agreement and deliver a copy of it to
each party on the other side is subject  to the  satisfaction  of the  following
conditions on or prior to the Effective  Date, any or all of which may be waived
in whole or in part by agreement of all parties:  (i)  execution and delivery of
the Trust  Agreement;  (ii) execution and delivery of that certain  Agreement on
Conversion of Secured Promissory Note to Equity,  made as of July 1, 2003 and of
the  certificate of Units referred to therein and the delivery of the October 2,
2002  Convertible  Secured  Promissory  Note  referred  to  therein;  and  (iii)
execution and delivery of that certain Agreement on Contribution to Capital made
as of July 1,  2003 and the  delivery  of the March 12,  2003 note  referred  to
therein.

            7.2.  CONDITIONS OF OBLIGATIONS OF NYFIX. The obligation of NYFIX to
execute  and deliver a copy of this  Agreement  to each Seller is subject to the
satisfaction of the following  conditions on or prior to the Effective Date, any
or all of which may be waived in whole or in part by NYFIX:  (i)  execution  and
delivery to NYFIX of valid and binding  resolutions of the Board of Directors of
the Company  approving  the Term Sheet,  approving the transfer of the Purchased

                                       14

Units from the Sellers to NYFIX,  approving and ratifying that certain Agreement
on Conversion of Secured Promissory Note to Equity, made as of July 1, 2003, and
appointing  Peter K.  Hansen and Mark R. Hahn as  officers  of the  Company  and
granting  each of them  authority to open bank accounts on behalf of the Company
and to have signing authority on Company bank accounts as of the Effective Date;
(ii)  execution  and  delivery  to NYFIX by all  members of the  Company of that
certain  Second  Amendment  to  Amended &  Restated  Limited  Liability  Company
Operating  Agreement  of  Renaissance  Trading   Technologies,   LLC,  effective
September  26,  2003;  (iii)  delivery  to  NYFIX  of a  copy  of  the  executed
resignations of Edward Brandman, Kenneth DeGiglio, Keith Jamaitis and Paolo Aloe
as directors of the Company,  effective  September  26, 2003;  (iv)  delivery to
NYFIX of a copy of the executed  resignation  of Daniel Ryan as  Executive  Vice
President  and Chief  Financial  Officer of the  Company  and  Secretary  of the
Company,  effective  September 26, 2003;  (v) delivery to NYFIX of a copy of the
executed  resignation of Kenneth  DeGiglio as Executive Vice President and Chief
Technology Officer of the Company,  effective  September 26, 2003; (vi) delivery
to NYFIX of a copy of the  executed  Separation  Agreement  and General  Release
between  Daniel Ryan and the  Company  dated as of  September  26,  2003;  (vii)
delivery to NYFIX of a copy of the  executed  Separation  Agreement  and General
Release between Kenneth DeGiglio and the Company dated as of September 26, 2003;
(viii)  execution and delivery to NYFIX by each Seller of this  Agreement;  (ix)
evidence  satisfactory  to NYFIX of the  execution by each Company  employee and
consultant  of an  assignment to the Company of  intellectual  property  rights,
satisfactory   to   NYFIX,   and   a   confidentiality,    non-competition   and
non-solicitation  agreement  with  the  Company,   satisfactory  to  NYFIX;  (x)
execution and delivery to NYFIX by  Renaissance  employees and  consultants,  as
designated  by  NYFIX,  of  employment  or  consultant   agreements  with  NYFIX
satisfactory  to NYFIX;  and (xi) a certificate  of the Secretary of Renaissance
attaching:  (y)  certificates of good standing of Renaissance  from Delaware and
New York as of a date no earlier than September 1, 2003; (z) the  Certificate of
Formation (or the  equivalent) of Renaissance and true and correct copies of the
Renaissance Operating Agreement and Bylaws, if any, and all Renaissance Board of
Director meeting minutes and resolutions with a statement that none of the above
have been amended or modified since the dates thereof and, as of the date of the
Secretary's certificate, are in full force and effect.

            7.3.  CONDITIONS OF OBLIGATIONS  OF SELLERS.  The obligation of each
Seller to execute  and deliver a copy of this  Agreement  to NYFIX is subject to
the satisfaction of the following  conditions on or prior to the Effective Date,
any or all of  which  may be  waived  in whole  or in part by the  Sellers:  (i)
execution  and  delivery  to  Daniel  Ryan by  NYFIX of that  certain  Unsecured
Conditional  Promissory Note as of September 26, 2003 of NYFIX payable to Daniel
Ryan;  (ii) execution and delivery by NYFIX to Kenneth  DeGiglio of that certain
Unsecured Conditional  Promissory Note as of September 26, 2003 of NYFIX payable
to Kenneth  DeGiglio;  (iii)  execution  and delivery by NYFIX to each Seller so
electing an unsecured  conditional  promissory  note as of September 26, 2003 in
the amount listed below the signature  line for such Seller;  (iv) execution and
delivery by the Company to Daniel Ryan of that certain Separation  Agreement and
General  Release  between  Daniel Ryan and NYFIX dated as of September 26, 2003;

                                       15

(v)  execution  and delivery by the Company to Kenneth  DeGiglio of that certain
Separation  Agreement and General  Release  between  Kenneth  DeGiglio and NYFIX
dated as of September 26, 2003;  (vi)  execution and delivery by NYFIX to Edward
Brandman of that certain  Release of Security  Interest  Securing March 12, 2003
Renaissance  Trading  Technologies,  LLC  Secured  Promissory  Note;  and  (vii)
execution and delivery to each Seller by NYFIX of this Agreement.

SECTION 8.  MISCELLANEOUS.
            -------------

            8.1.  ASSIGNMENT.  This Agreement shall be binding upon and inure to
the benefit of the parties hereto and their  respective  successors and assigns.
No  Seller  may  assign  this  Agreement  or  his or her  rights,  interests  or
obligations under this Agreement without the prior written consent of the Buyer.
Any transfer or assignment of any rights,  interests or obligations hereunder in
violation of the terms hereof shall be void and of no force or effect.

            8.2. SURVIVAL.  All representations,  warranties and agreements made
in Section 2 of this Agreement  shall survive the execution  hereof for a period
of 12 months and made in Sections 3 and 4 of this  Agreement  shall  survive the
execution   hereof  for  a  period  of  24  months;   provided,   however,   the
representations  and  warranties  in Sections  2.3, 2.7, 3.5. 3.16 and 4.6 shall
survive  indefinitely  and the  representations  and  warranties in Section 3.14
shall survive until the expiration of the longest statute of limitations  period
applicable to an action brought by the appropriate taxing authority with respect
to a breach of such representations.

            8.3.  ENTIRE  AGREEMENT.  This  Agreement  (together  with any other
documents  and  instruments  referred  to herein)  supersedes  any and all prior
contracts,  understandings,  discussions  and  agreements  between  the  parties
hereto,  and constitutes the complete  understanding  between the parties,  with
respect to the subject matter hereof. No statement, representation,  warranty or
covenant has been made by any party with respect thereto except as expressly set
forth herein.

            8.4.  MODIFICATION;  WAIVER. This Agreement may be amended or waived
if, and only if, such amendment or waiver is in writing and signed,  in the case
of an  amendment,  by all the  undersigned,  or in the case of a waiver,  by the
party  against  whom the waiver is to be  effective.  No failure or delay by any
party in exercising any right,  power or privilege  hereunder shall operate as a
waiver  thereof nor shall any single or partial  exercise  thereof  preclude any
other or further exercise  thereof or the exercise of any other right,  power or
privilege. The rights and remedies herein provided shall be cumulative and shall
not be exclusive to any rights or remedies by law or at equity.

            8.5.  APPLICABLE  LAW.  This  Agreement  shall  be  governed  by and
construed  and  enforced in  accordance  with the laws of the State of New York,
regardless  of the law that might be applied  under  principles  of conflicts of
laws.

                                       16

            8.6. SEVERABILITY.  Any term or provision of this Agreement which is
invalid or unenforceable in any jurisdiction shall, as to that jurisdiction,  be
ineffective  to the  extent  of  such  invalidity  or  unenforceability  without
rendering  invalid or  unenforceable  the remaining terms and provisions of this
Agreement or affecting  the  validity or  enforceability  of any of the terms or
provisions of this Agreement in any other jurisdiction. If any provision of this
Agreement is so broad as to be unenforceable, the provision shall be interpreted
to be only so broad as to be enforceable.

            8.7. EXPENSES OF TRANSACTION. Buyer shall pay all costs and expenses
incurred  by  it  in  connection  with  this  Agreement  and  the   transactions
contemplated hereby and the Company shall pay the costs and expenses incurred by
it and the  Sellers  in  connection  with this  Agreement  and the  transactions
contemplated  hereby up to an amount not  exceeding  $17,500,  exclusive of fees
paid to Putnam Lovell pursuant to the engagement  letter between the Company and
Putnam Lovell dated December 12, 2002. In the event that such costs and expenses
incurred by the Company  and the Sellers  exceed the $17,500  limit set forth in
the immediately  preceding sentence,  the $6,000,000  consideration set forth in
Section  1.1 shall be reduced  dollar  for dollar for every  dollar in excess of
$17,500. The parties agree that the excess costs and expenses referred to in the
immediately preceding sentence are $27,500 and that the $6,000,000 consideration
set forth in Section 1.1 shall for all purposes be reduced to $5,972,500.

            8.8.  FURTHER  ASSURANCES.  From time to time, at the request of any
party  hereto  or  as  required  under   applicable  law  and  without   further
consideration,  each party  hereto will  execute and deliver to such  requesting
party or other Person or Persons,  as appropriate,  such documents and take such
other action (but without incurring any financial obligation except as otherwise
required by this Agreement) as such requesting  party may reasonably  request in
order to consummate  more  effectively and in accordance with applicable law the
transactions contemplated hereby.

            8.9.  NOTICES.  All notices and other  communications  provided  for
herein  shall be in writing and shall be deemed to have been duly given and made
if served  either by  personal  delivery to the party for whom  intended  (which
shall include delivery by a reputable  overnight courier) or three business days
after being  deposited,  postage prepaid,  certified or registered mail,  return
receipt  requested,  in the United States mail bearing the follow  address shown
for, or such other address as may be  designated  in writing  hereafter by, such
party:

            If to the Sellers:       at the addresses set forth  opposite  their
                                     respective  names  on the  signature  pages
                                     hereto

            with a copy to:          Drinker Biddle & Reath LLP
                                     Suite 300
                                     105 College Road East
                                     P.O. Box 627
                                     Princeton, NJ 08542
                                     Attention:  Thomas A. Belton, Esq.

                                       17

            If to the Buyer:         NYFIX, Inc.
                                     Stamford Harbor Park
                                     333 Ludlow Street
                                     Stamford, CT 06902
                                     Attention:  Peter K. Hansen, CEO

            with a copy to:          NYFIX, Inc.
                                     Stamford Harbor Park
                                     333 Ludlow Street
                                     Stamford, CT 06902
                                     Attention:  Brian Bellardo, General Counsel

            8.10. COUNTERPARTS.  This Agreement may be executed in any number of
counterparts,  each of which shall be deemed to be an original  and all of which
together shall be deemed to be one and the same instrument.  A facsimile copy of
a signature  page shall be deemed an  original  signature  for  purposes of this
Agreement.

            8.11.  FORM 1065 FOR SHORT-YEAR  TAX RETURN.  If the Company files a
Form 1065 for  short-year  tax  return  upon  termination  of the  Company  as a
partnership  for tax  purposes,  Buyer shall  cause the Company to provide  such
return to the Management Sellers for review prior to such filing.

            8.12.  TAX  TREATMENT OF SHARES IN TRUST.  The parties  hereto agree
that the issuance of shares of NYFIX Common Stock pursuant to Section 1.1(c) and
their subsequent distribution,  if any, pursuant to the Trust Agreement shall be
characterized  as a capital  transaction  for tax purposes.  Each of the parties
shall report such issuance and subsequent  distribution as a capital transaction
on all of his,  her or its  federal,  state and local tax  returns  and no party
hereto shall take any position  that is  inconsistent  therewith on any such tax
return, in dealing with any taxing authority or otherwise.  Notwithstanding  the
foregoing, no party hereto shall be prohibited from compromising or settling any
claim with any taxing  authority  based on the  reporting of the issuance of the
NYFIX Common Stock pursuant to Section 1.1(c) and their subsequent distribution,
if any,  pursuant  to the  Trust  Agreement  as a  capital  transaction  for tax
purposes.

            8.13.  ACKNOWLEDGEMENT AND ADOPTION OF AGREEMENTS.  Each Seller, for
the  consideration  received  by such Seller from NYFIX  and/or  Renaissance  in
connection  with  the  purchase  by  NYFIX  of  the  Purchased   Units,   hereby
acknowledges  and  adopts,  as of the  date of  such  Seller's  initial  hire by
Renaissance  as an  employee  or  consultant,  each of the  Renaissance  Trading
Technologies   Confidentiality   Agreement,   Renaissance  Trading  Technologies
Non-Competitive Agreement,  Employee Nondisclosure and Development Agreement and
the  Consulting  Agreement,  forms of which are attached as Exhibit F, that such
Seller has executed.

               [SIGNATURE PAGES, EXHIBITS AND SCHEDULES OMITTED]

                                       18

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