EX-10.27





 Exhibit 10.27 

*Portions of this exhibit have been excluded because it both (i) is not material and (ii) would be competitively harmful if publicly disclosed.

 Second Addendum and Amendment to Support Services Agreement 

This SECOND ADDENDUM AND AMENDMENT TO SUPPORT SERVICES AGREEMENT by and among PEAK6 Investments, LP, (“Providing Party”),
Apex Clearing Holdings LLC (“ACH”) and Apex Clearing Corporation (“Apex”) is made and entered into as of September 26, 2013 (this “Addendum”). 

WHEREAS, on June 5, 2012, Providing Party and ACH entered into that certain Support Services Agreement (the “Original
Agreement”); and 
 WHEREAS, on December 1, 2012, ACH, Providing Party, and Apex entered into an Addendum and Amendment to
add Apex as a party to the Original Agreement; and 
 WHEREAS, ACH, Providing Party, and Apex desire to enter into this Addendum to
specify pricing to be paid for certain specific services to be provided under the Original Agreement, as amended. 
 NOW, THEREFORE,
in consideration of the mutual covenants and agreements herein contained and for other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties hereto agree as follows: 

ARTICLE I 
 DEFINED TERMS

 Section 1.1 Use of Defined Terms. Unless otherwise defined herein or the context otherwise requires, terms
for which meanings are provided in the Original Agreement shall have such meanings when used in this Addendum. 
 ARTICLE II 

AMENDMENTS 

Section 2.1 Charges for Services. 

(a) The parties agree that the rates for the services set forth below were determined in accordance with Section 4 of the Original
Agreement, as amended, and are the applicable rates for the services and time periods specified below. 
 (i) Equity and
Option Pricing. Providing Party will provide Apex with raw equity and option prices from Providing Party’s pricing server for use by Apex with its real-time risk systems. The cost for this service from March 1, 2013 through December 31,
2013 is $[****] per month. Beginning on January 1, 2014, the cost for this service increases to $[****] per month. 
 (ii)
Option Pricing Calculator. Providing Party will provide Apex with use of its option pricing calculator to use in calculating option greeks and PnL slides. The cost for this service is $5,000 per month. 












 (b) The parties agree that the services specified above may be terminated
without penalty: (i) by Apex by providing thirty days’ written notice to Providing Party; or (ii) by Providing Party by providing ninety days’ written notice to Apex. 

ARTICLE III 

MISCELLANEOUS 

Section 3.1 References to the Original Agreement. Except for the amendments expressly set forth above, the Original
Agreement is unmodified hereby. Reference to this specific Addendum need not be made in the Original Agreement, or any other instrument or document executed in connection therewith, or in any certificate, letter or communication issued or made
pursuant to or with respect to the Original Agreement, any reference in any of such items to the Original Agreement being sufficient to refer to the Original Agreement as amended hereby. This Addendum is expressly made a part of the Original
Agreement. 
 Section 3.2 Incorporation of Provisions. Sections 7 and 14 of the Original Agreement are incorporated by
reference herein mutatis mutandis.  
 ********** 












 IN WITNESS WHEREOF, the parties hereto have executed this Second Addendum and
Amendment to Support Services Agreement as of the day and year first written above. 
  

			
	PEAK6 INVESTMENTS, L.P.
		
	By:	 	/s/ Jay Coppoletta
		 	Name: Jay Coppoletta
		 	Title: Chief Corporate Development & Legal Officer
	
	APEX CLEARING HOLDINGS LLC
		
	By:	 	/s/ Daniel Rosenthal
		 	Name: Daniel Rosenthal
		 	Title: CEO
	
	APEX CLEARING CORPORATION
		
	By:	 	/s/ Daniel Rosenthal
		 	Name: Daniel Rosenthal
		 	Title: CEO