Document ID: SEC-2017-0370-0001
Agency: sec
Document Type: Notice
Title: Self-Regulatory Organizations; Proposed Rule Changes: Miami International Securities Exchange, LLC
Posted Date: 2017-03-09T05:00Z

[Federal Register Volume 82, Number 45 (Thursday, March 9, 2017)]
[Notices]
[Pages 13146-13150]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-04603]

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SECURITIES AND EXCHANGE COMMISSION

[Release No. 34-80151; File No. SR-MIAX-2017-08]

Self-Regulatory Organizations; Notice of Filing and Immediate 
Effectiveness of a Proposed Rule Change by Miami International 
Securities Exchange LLC To Amend MIAX Options Rule 519C, Mass 
Cancellation of Trading Interest

March 3, 2017.
    Pursuant to Section 19(b)(1) of the Securities Exchange Act of 1934 
(``Act'') \1\ and Rule 19b-4 thereunder,\2\ notice is hereby given 
that, on February 23, 2017, Miami International Securities Exchange, 
LLC (``MIAX'' or ``Exchange'') filed with the Securities and Exchange 
Commission (``Commission'') a proposed rule change as described in 
Items I, II, and III below, which Items have been prepared by the 
Exchange. The Commission is publishing this notice to solicit comments 
on the proposed rule change from interested persons.
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    \1\ 15 U.S.C. 78s(b)(1).
    \2\ 17 CFR 240.19b-4.
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I. Self-Regulatory Organization's Statement of the Terms of Substance 
of the Proposed Rule Change

    The Exchange is filing a proposal to amend Exchange Rule 519C.
    The text of the proposed rule change is available on the Exchange's 
Web site at http://www.miaxoptions.com/filter/wotitle/rule_filing, at 
MIAX's principal office, and at the Commission's Public Reference Room.

II. Self-Regulatory Organization's Statement of the Purpose of, and 
Statutory Basis for, the Proposed Rule Change

    In its filing with the Commission, the Exchange included statements 
concerning the purpose of and basis for the proposed rule change and 
discussed any comments it received on the proposed rule change. The 
text of these statements may be examined at the places specified in 
Item IV below. The Exchange has prepared summaries, set forth in 
sections A, B, and C below, of the most significant aspects of such 
statements.

A. Self-Regulatory Organization's Statement of the Purpose of, and the 
Statutory Basis for, the Proposed Rule Change

1. Purpose
    The Exchange proposes to amend Rule 519C, Mass Cancellation of 
Trading Interest, to adopt new section

[[Page 13147]]

(c) entitled ``Detection of Loss of Communication,'' to codify the use 
of current functionality in the Exchange's System \3\ which is designed 
to assist market participants in the event of a loss of communication 
with either their assigned MIAX Express Interface (``MEI'') \4\ or 
Financial Information eXchange (``FIX'') \5\ port due to a loss of 
connectivity. This functionality is designed to protect Market Makers 
\6\ and other market participants from inadvertent exposure to 
excessive risk. Additionally, the Exchange proposes to adopt new 
Interpretations and Policies .01 and .02 as discussed below.
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    \3\ The term ``System'' means the automated trading system used 
by the Exchange for the trading of securities. See Exchange Rule 
100.
    \4\ MEI is a connection to MIAX systems that enables Market 
Makers to submit electronic quotes to the Exchange.
    \5\ FIX connections to the Exchange permit the entry of orders.
    \6\ The term ``Market Makers'' refers to ``Lead Market Makers'', 
``Primary Lead Market Makers'' and Registered Market Makers'' 
collectively. See Exchange Rule 100.
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    Exchange Members \7\ enter quotes \8\ and orders \9\ utilizing 
either an MEI port or a FIX port respectively. MEI is utilized by 
Market Makers of the Exchange and FIX is utilized by Electronic 
Exchange Members (``EEMs'').\10\ These ports provide the mechanism by 
which Members maintain a connection to the Exchange and through which a 
Member communicates its quotes and/or orders to the System. Market 
Makers may submit quotes to the Exchange from one or more MEI ports. 
Similarly, Members may submit orders to the Exchange from one or more 
FIX ports. When the System detects a loss of communication with a 
Member, the System has the capability to remove the Member's quotes 
and/or orders, if so elected and configured by the Member. The Exchange 
notes that this functionality is mandatory for Market Makers using MEI 
and optional for EEMs using FIX as discussed in more detail below.
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    \7\ The term ``Member'' means an individual or organization 
approved to exercise the trading rights associated with a Trading 
Permit. Members are deemed ``members'' under the Exchange Act. See 
Exchange Rule 100.
    \8\ The term ``quote'' or ``quotation'' means a bid or offer 
entered by a Market Maker that is firm and may update the Market 
Maker's previous quote, if any. The Rules of the Exchange provide 
for the use of different type of quotes, including Standard quotes 
and eQuotes, as more fully described in Rule 517. See Exchange Rule 
100.
    \9\ The term ``order'' means a firm commitment to buy or sell 
option contracts. See Exchange Rule 100.
    \10\ The term ``Electronic Exchange Member'' means the holder of 
a Trading Permit who is not a Market Maker. Electronic Exchange 
Members are deemed ``members'' under the Exchange Act. See Exchange 
Rule 100.
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MEI Connections
    Market Makers connect to their assigned MEI port using the MIAX 
Session Management Protocol (``SesM''). The SesM protocol uses 
heartbeat \11\ packets to detect link failures between the Member and 
the Exchange. The SesM protocol requires that the Exchange must send a 
heartbeat packet anytime more than one (1) second has passed since the 
Exchange last sent any data. Further, the SesM protocol requires that 
the Member must send a heartbeat packet anytime more than one (1) 
second has passed since the Member last sent any data. If a certain 
number of consecutive heartbeats are missed,\12\ or if the Member fails 
to send data or heartbeats within ``xx'' period of time (``Heartbeat 
Interval''), the System will automatically close the connection and 
listen for the Member to establish a new connection. The default 
Heartbeat Interval setting is determined by the Exchange and configured 
directly into the System.\13\ Any change to this setting will be 
communicated to Members accordingly.
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    \11\ A heartbeat is a message that is generated at regular 
intervals to indicate that two way communication has been 
established. A loss of heartbeats or the lack of a response to a 
heartbeat request indicates a loss of communication.
    \12\ The Exchange notes that the current System setting is three 
(3) heartbeats and that any change to this setting will be 
determined by the Exchange and communicated to Members via a 
Regulatory Circular.
    \13\ The Exchange notes the current setting is three (3) 
seconds.
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    The Exchange offers Market Makers two different types of MEI port 
connections. A Full Service Port \14\ which supports all message types 
and a Limited Service Port which provides slightly less 
functionality.\15\ The Exchange limits Members to two (2) Full Service 
Ports and allows up to eight (8) Limited Service Ports per MIAX 
matching engine.\16\ Both Full Service and Limited Service Ports can 
have ``Cancel on Disconnect'' enabled. By default, Cancel on Disconnect 
functionality will be triggered upon establishing a loss of 
communication to the Market Maker's last MEI Full Service Port 
connection to a matching engine. When Cancel on Disconnect is 
triggered, the System will close the session and remove a Market 
Maker's quotes and eQuotes from the Exchange, for the impacted matching 
engine only.
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    \14\ Full Service MEI Ports provide Market Makers with the 
ability to send Market Maker quotes, eQuotes, and quote purge 
messages to the MIAX System. Full Service MEI Ports are also capable 
of receiving administrative information. Market Makers are limited 
to two Full Service MEI Ports per matching engine.
    \15\ Limited Service MEI Ports provide Market Makers with the 
ability to send eQuotes and quote purge messages only, but not 
Market Maker Quotes, to the System. Limited Service MEI Ports are 
also capable of receiving administrative information.
    \16\ A ``matching engine'' is a part of the MIAX electronic 
system that processes options quotes and trades on a symbol-by-
symbol basis. The Exchange currently hosts 24 separate matching 
engines.
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    Market Makers have the ability to group MEI ports together by port 
and/or Market Participant ID (``MPID'') for the purpose of establishing 
groups of connections to tailor Cancel on Disconnect functionality to 
the Member's business needs. Cancel on Disconnect may be enabled for 
any Port, however by selectively grouping ports and/or MPIDs, a Member 
can customize the loss of communication scenario which would result in 
Cancel on Disconnect functionality ultimately being invoked.
    Examples for illustration purposes are provided below.
    Example 1: Default Behavior.
    Group 1: MEI Full Service Ports: MEI Port 1 & MEI Port 2.
    Scenario 1: MEI Port 1 disconnects, (MEI Port 2 connected) no 
quotes removed.
    Scenario 2: MEI Port 2 disconnects, (MEI Port 1 connected) no 
quotes removed.
    Scenario 3: MEI Port 1 disconnects, MEI Port 2 disconnects, Cancel 
on Disconnect triggered.
    Scenario 4: MEI Port 2 disconnects, MEI Port 1 disconnects, Cancel 
on Disconnect triggered.
    Example 2: A Member requiring a configuration which separates their 
eQuotes, Mass-Quote-Cancel or Notifications to a separate port.
    Group 1: MEI Full Service Ports: MEI Port 1 & MEI Port 2.
    Group 2: MEI Limited Service Port: MEI Port 3.
    Group 1 is configured for Cancel on Disconnect; Group 2 is not.
    Assuming that the Firm is connected on all ports:
    Scenario 1: MEI Port 1 disconnects, no quotes removed.
    Scenario 2: MEI Port 1 and Port 2 disconnect, Cancel on Disconnect 
triggered, quotes removed.
    Scenario 3: MEI Port 3 disconnects, no quotes removed.
    Scenario 4: MEI Port 1 and Port 3 disconnect, no quotes removed.
    Example 3: A Member requiring a configuration to divide the ports 
to separate computers or traders.
    Group 1: MEI Full Service Port: MEI Port 1; MEI Limited Service 
Port: MEI Port 2.
    Group 2: MEI Full Service Port: MEI Port 3; MEI Limited Service 
Port: MEI Port 4.
    Group 1 MPIDs: MPID_1, MPID_2, MPID_3.

[[Page 13148]]

    Group 2 MPIDs: MPID_3, MPID_4, MPID_5.
    Both groups are configured for Cancel on Disconnect, and MPID_3 is 
in both groups.
    Assuming the Member is connected on all ports:
    Scenario 1: MEI Port 1 disconnects, no quotes removed.
    Scenario 2: MEI Port 1 and Port 2 disconnect, Cancel on Disconnect 
triggered for MPID_1, MPID_2, and MPID_3.
    Scenario 3: MEI Port 3 disconnects, no quotes removed.
    Scenario 4: MEI Port 1 and MEI Port 3 disconnect, Cancel on 
Disconnect triggered for all MPIDs.
FIX Connections
    EEMs connect to their assigned FIX port using the MIAX FIX Order 
Interface (``FOI'') which is a flexible interface that uses the FIX 
protocol for both application and session level messages. As per the 
FIX protocol, a connection is established by the Member submitting a 
logon message to the Exchange. This logon message establishes the 
heartbeat interval that will be used by the session. This value must be 
greater than zero seconds and the same value must be used by both the 
Member and the Exchange.
    Within the logon message a Member can enable ``Auto Cancel on 
Disconnect'' for all orders sent through a session by setting a flag in 
the logon message. This would result in all eligible orders \17\ 
submitted through the FIX connection to be canceled upon a loss of 
communication. Alternatively, a Member can identify individual orders 
on a per order basis that are to be considered for Auto Cancel on 
Disconnect treatment.
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    \17\ Good `Til Cancelled (``GTC'') orders are not eligible for 
Auto Cancel on Disconnect. A GTC order is an order to buy or sell 
which remains in effect until it is either executed, cancelled or 
the underlying option expires. See Exchange Rule 516. PRIME orders 
are not eligible for Auto Cancel on Disconnect. See Exchange Rule 
515A.
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    Upon missing a single heartbeat, FOI will send a Test Request 
message \18\ to the Member to check the status of the connection. Upon 
missing a certain number of heartbeats,\19\ FOI will send a logout 
message and terminate the connection. When FOI detects a disconnection 
for any reason it will trigger the Auto Cancel on Disconnect process, 
whereby, if enabled, FOI will cancel all eligible orders. If Auto 
Cancel on Disconnect is not enabled for the session or for any orders, 
FOI will simply disconnect the FIX session and not cancel any orders. 
Once disconnected, a FIX user would have to commence a new session to 
add, modify, or cancel its orders. After a disconnect FOI will not 
accept connections from the Member for a pre-configured period of 
time.\20\ This allows the Exchange to cancel orders without the Member 
being able to reconnect and attempt to interact with an order in the 
process of being canceled. Any change to this setting will be announced 
to Members accordingly.
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    \18\ The test request message is a FIX Protocol message that 
forces a heartbeat from the opposing application. The test request 
message checks sequence numbers or verifies communication line 
status. The opposite application responds to the Test Request with a 
Heartbeat containing the Test Request ID. Financial Information 
Exchange Protocol (FIX), Version 4.2 with errata. May 1, 2001.
    \19\ The Exchange notes that the current System setting is two 
(2) heartbeats, and that any change to this setting will be 
determined by the Exchange and communicated to Members via 
Regulatory Circular.
    \20\ The Exchange notes the current setting is five (5) seconds.
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    The Auto Cancel on Disconnect functionality is designed to react to 
external connection loss scenarios only. Therefore, it does not cancel 
orders in the event of a MIAX system failure. The execution reports 
resulting from cancels or trades during the period a Member is 
disconnected can be received upon a subsequent reconnection by the 
Member on the same trading day.
    The Exchange also proposes to adopt new Interpretations and 
Policies .01 to enumerate order types that are not eligible for removal 
by the Auto Cancel on Disconnect functionality. Proposed Interpretation 
and Policies .01 will state that Good `Til Cancelled (``GTC'') \21\ 
orders and PRIME orders are not eligible for automatic cancellation. 
PRIME is the Exchange's Price Improvement Mechanism \22\ and PRIME 
orders are stopped orders which are used to start an auction process 
whereby the execution price the order receives may be improved as a 
result of the auction. A PRIME auction has a maximum duration of 500 
milliseconds. PRIME orders are not resting orders and are used solely 
to facilitate the PRIME auction process.
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    \21\ See Exchange Rule 516.
    \22\ See Exchange Rule 515A.
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    Further, the Exchange proposes to adopt new Interpretations and 
Policies .02 (i) to define what a ``Heartbeat'' message is and how it 
used by the Exchange, and (ii) to define the requirements for 
establishing a ``Loss of Communication'' on the Exchange.
    The functionality discussed above is designed to mitigate potential 
risks associated with a loss of communication to the Exchange. In 
today's market, Market Makers' quotes are rapidly changing and can have 
a lifespan of only milliseconds. Therefore, if a Member is disconnected 
for any period of time, and its quotes remained in the System, it is 
very possible that the quotes would be stale by the time the Member was 
able to reestablish connectivity. Consequently, any resulting execution 
of such quotes is more likely to be erroneous or unintended. 
Conversely, the Exchange notes that orders tend to be static in nature 
and often rest on the Book. Certain orders, such as GTC orders are 
intended to rest on the Book for an extended period of time. As such, 
there is a lower risk of erroneous or unintended executions resulting 
from orders that remained in the System after a Member experienced a 
loss of communication.
    The Exchange believes that while information relating to 
connectivity and loss of communication is already available to Members 
via technical specifications, codifying this information in the rule 
text will provide additional transparency and further reduce the 
potential for confusion.
2. Statutory Basis
    MIAX believes that its proposed rule change is consistent with 
Section 6(b) of the Act \23\ in general, and furthers the objectives of 
Section 6(b)(5) of the Act \24\ in particular, in that it is designed 
to prevent fraudulent and manipulative acts and practices, to promote 
just and equitable principles of trade, to foster cooperation and 
coordination with persons engaged in regulating, clearing, settling, 
processing information with respect to, and facilitating transactions 
in securities, to remove impediments to and perfect the mechanisms of a 
free and open market and a national market system and, in general, to 
protect investors and the public interest.
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    \23\ 15 U.S.C. 78f(b).
    \24\ 15 U.S.C. 78f(b)(5).
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    The proposed rule will remove impediments to and perfect the 
mechanism of a free and open market and a national market system and 
protect investors and the public interest by providing Market Makers 
with a mechanism by which quotes may be removed in the event of a loss 
of connectivity with the System.
    Market Makers provide liquidity to the market place and have 
obligations unlike other Members.\25\
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    \25\ See Exchange Rule 603.
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    This risk protection feature is important because it will enable 
Market Makers to avoid risks associated with inadvertent executions in 
the event of a loss of communication with the Exchange. The proposed 
rule change is

[[Page 13149]]

not unfairly discriminatory among market participants, as it is 
available equally to all market participants utilizing MEI. The 
obligation of Market Makers on the Exchange to provide continuous two-
sided quotes in their assigned series on a daily basis \26\ is not 
diminished by the removal of such quotes triggered by the disconnect. 
The Exchange will not be prohibited from taking disciplinary action 
against a Market Maker for failing to meet its continuous quoting 
obligation each trading day as a result of disconnections.
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    \26\ See Exchange Rule 604.
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    The disconnect feature of FIX connections is mandatory, however 
Members have the option to enable the cancellation of all orders for an 
entire session or select orders for cancellation on an order-by-order 
basis, which would result in the cancellation of orders submitted over 
a FIX port when such port disconnects. It is appropriate to offer two 
different removal features to all Members utilizing FIX, as these 
Members may desire that their orders remain on the order book despite a 
technical disconnection, so as not to miss any opportunities for 
execution of such orders while the FIX session is disconnected. 
Offering to cancel all orders, specifically selected orders, or no 
orders, upon disconnect allows the Member to customize the 
functionality to align to its business needs. Offering this type of 
order cancellation functionality to Members is consistent with the Act 
because it enables Members to avoid risks associated with inadvertent 
executions in the event of a loss of communication with the Exchange. 
The order cancellation functionality is designed to mitigate the risk 
of missed and/or unintended executions associated with a loss in 
communication with the Exchange. The proposed rule change is not 
unfairly discriminatory among market participants, as it is available 
equally to all market participants utilizing FIX.
    The disconnect feature is mandatory under the FIX protocol. The 
Exchange will disconnect Members from the Exchange and not cancel 
orders if the Auto Cancel on Disconnect functionality is not enabled. 
This feature is consistent with the Act because it provides FIX users 
the ability to disconnect from the Exchange and assess the current 
market conditions to make a determination concerning their risk 
exposure. The Exchange notes that in the event Auto Cancel on 
Disconnect functionality is not enabled and such orders need to be 
cancelled after a disconnection occurs, an Exchange participant can 
contact Exchange staff to have its orders cancelled from the 
System.\27\ The Exchange believes requiring a disconnect when a loss of 
communication is detected to be a rational course of action for the 
Exchange to alert the Member of the technical connectivity issue.
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    \27\ See Exchange Rule 519C.
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    The Exchange believes that the proposed rule change will assist 
with the maintenance of a fair and orderly market by codifying risk 
protections for orders and quotes. The Exchange's proposal is 
consistent with the Act because it will mitigate the risk of potential 
erroneous or unintended executions associated with a loss in 
communication which protects investors and the public interest. 
Additionally, the proposed rule adds another risk protection tool for 
Members and protects investors and the public interest by increasing 
the risk protection tools available to Members of the Exchange. The 
Exchange believes codifying existing functionality by rule will remove 
impediments to and perfect the mechanisms of a free and open market by 
adding precision and ease of reference to the Exchange's Rules, thus 
promoting transparency and clarity for Members.

B. Self-Regulatory Organization's Statement on Burden on Competition

    The Exchange does not believe that the proposed rule change will 
impose any burden on competition that is not necessary or appropriate 
in furtherance of the purposes of the Act.
    The Exchange believes the proposed rule change will not impose any 
burden on intra-market competition because every Member of the Exchange 
has the opportunity to benefit from the functionality described in the 
proposed rule.
    The Exchange provides two separate and distinct mechanisms for 
communicating with the Exchange, MEI and FIX. MEI Ports support the 
submission of quotes to the Exchange and are used by Market Makers who 
have heightened quoting obligations because of their role.\28\ Market 
Makers are provided the ability to configure their MEI Ports to 
leverage the functionality provided by the Exchange to remove quotes to 
align to their risk tolerance. Because of the volume of series that a 
Market Maker is obligated quote, the Exchange believes that removing 
all quotes for an affected matching engine on behalf of a Market Maker 
who has lost its last MEI connection to that engine to be in the best 
interest of both the Market Maker, to mitigate risk; and the Exchange, 
to ensure a fair and orderly market.
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    \28\ See Exchange Rule 603.
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    FIX connections to the Exchange only support order submission. FIX 
users may set a timeframe for disconnection that is appropriate for 
their risk tolerance. Offering functionality to cancel all, some, or 
none, of the orders in the System upon establishing a loss of 
communication does not create an undue burden on intra-market 
competition as Members do not equally bear the same risks of potential 
erroneous or unintended executions. Further, FIX users have greater 
control over their orders and may designate a number of different Time 
in Force instructions which can be used to determine the duration an 
order rests on the Book, from Immediate-or-Cancel, which is executed in 
whole or part upon receipt, with any unexecuted portion being 
cancelled; to a Good `Til Cancelled order, which may rest on the Book 
until it is executed, cancelled by the user, or until the underlying 
option expires.\29\
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    \29\ See Exchange Rule 516.
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    The Exchange does not believe the proposed rule change will impose 
any burden on inter-market competition that is not necessary or 
appropriate in furtherance of the purposes of the Act. The Exchange 
notes that other option exchanges offer similar functionality.\30\ For 
all the reasons stated, the Exchange does not believe that the proposed 
rule change will impose any burden on competition not necessary or 
appropriate in furtherance of the purposes of the Act.
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    \30\ See BOX Rule 8140; CBOE Rule 6.23C; NASDAQ BX Chapter VI, 
Section 6; and NASDAQ Phlx Rule 1019.
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C. Self-Regulatory Organization's Statement on Comments on the Proposed 
Rule Change Received From Members, Participants, or Others

    Written comments were neither solicited nor received.

III. Date of Effectiveness of the Proposed Rule Change and Timing for 
Commission Action

    Because the foregoing proposed rule change does not: (i) 
Significantly affect the protection of investors or the public 
interest; (ii) impose any significant burden on competition; and (iii) 
become operative for 30 days after the date of the filing, or such 
shorter time as the Commission may designate, it has become effective 
pursuant to 19(b)(3)(A)

[[Page 13150]]

of the Act \31\ and Rule 19b-4(f)(6) \32\ thereunder.
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    \31\ 15 U.S.C. 78s(b)(3)(A).
    \32\ 17 CFR 240.19b-4(f)(6). In addition, Rule 19b-4(f)(6) 
requires a self-regulatory organization to give the Commission 
written notice of its intent to file the proposed rule change at 
least five business days prior to the date of filing of the proposed 
rule change, or such shorter time as designated by the Commission. 
The Exchange has satisfied this requirement.
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    At any time within 60 days of the filing of the proposed rule 
change, the Commission summarily may temporarily suspend such rule 
change if it appears to the Commission that such action is necessary or 
appropriate in the public interest, for the protection of investors, or 
otherwise in furtherance of the purposes of the Act. If the Commission 
takes such action, the Commission shall institute proceedings to 
determine whether the proposed rule should be approved or disapproved.

IV. Solicitation of Comments

    Interested persons are invited to submit written data, views, and 
arguments concerning the foregoing, including whether the proposed rule 
change is consistent with the Act. Comments may be submitted by any of 
the following methods:

Electronic Comments

     Use the Commission's Internet comment form (http://www.sec.gov/rules/sro.shtml); or
     Send an email to rule-comments@sec.gov. Please include 
File Number SR-MIAX-2017-08 on the subject line.

Paper Comments

     Send paper comments in triplicate to Brent J. Fields, 
Secretary, Securities and Exchange Commission, 100 F Street NE., 
Washington, DC 20549-1090.

All submissions should refer to File Number SR-MIAX-2017-08. This file 
number should be included on the subject line if email is used. To help 
the Commission process and review your comments more efficiently, 
please use only one method. The Commission will post all comments on 
the Commission's Internet Web site (http://www.sec.gov/rules/sro.shtml). Copies of the submission, all subsequent amendments, all 
written statements with respect to the proposed rule change that are 
filed with the Commission, and all written communications relating to 
the proposed rule change between the Commission and any person, other 
than those that may be withheld from the public in accordance with the 
provisions of 5 U.S.C. 552, will be available for Web site viewing and 
printing in the Commission's Public Reference Room, 100 F Street NE., 
Washington, DC 20549 on official business days between the hours of 
10:00 a.m. and 3:00 p.m. Copies of the filing also will be available 
for inspection and copying at the principal office of the Exchange. All 
comments received will be posted without change; the Commission does 
not edit personal identifying information from submissions. You should 
submit only information that you wish to make available publicly. All 
submissions should refer to File Number SR-MIAX-2017-08 and should be 
submitted on or before March 30, 2017.

    For the Commission, by the Division of Trading and Markets, 
pursuant to delegated authority.\33\
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    \33\ 17 CFR 200.30-3(a)(12).
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Eduardo A. Aleman,
Assistant Secretary.
[FR Doc. 2017-04603 Filed 3-8-17; 8:45 am]
BILLING CODE 8011-01-P