Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
JOYCE THOMAS M
   2. Issuer Name and Ticker or Trading Symbol
KNIGHT CAPITAL GROUP, INC. [KCG] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chairman & CEO
(Last)
(First)
(Middle)
KNIGHT CAPITAL GROUP, INC., 545 WASHINGTON BOULEVARD		 3. Date of Earliest Transaction (Month/Day/Year)
11/22/2010
(Street)

JERSEY CITY, NJ 07310		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Class A Common Stock 11/22/2010   M   50,000 A $ 9.84 215,698 D  
Class A Common Stock 11/22/2010   S(1)   50,000 D $ 13.279 (2) 165,698 D  
Class A Common Stock 11/23/2010   M   50,000 A $ 9.84 215,698 D  
Class A Common Stock 11/23/2010   S(1)   50,000 D $ 13.115 (3) 165,698 D  
Restricted Stock Units (Previously Reported)               711,145 D  
Restricted Class A Common Stock (Previously Reported)               57,884 D  
Class A Common Stock (Previously Reported)               76,061 I By Joyce Family 2009 GRAT
Class A Common Stock (Previously Reported)               200,000 I By Joyce Family 2009 GRAT II
Class A Common Stock (Previously Reported)               400,000 I By Joyce Family 2010 GRAT
Class A Common Stock (Previously Reported)               34,695 I By Trust for Children

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (Right to Buy) $ 9.84 11/22/2010   M     50,000 01/01/2009 01/01/2011 Class A Common Stock 50,000 $ 9.84 1,413,630 D  
Stock Option (Right to Buy) $ 9.84 11/23/2010   M     50,000 01/01/2009 01/01/2011 Class A Common Stock 50,000 $ 9.84 1,363,630 (4) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
JOYCE THOMAS M
KNIGHT CAPITAL GROUP, INC.
545 WASHINGTON BOULEVARD
JERSEY CITY, NJ 07310		       Chairman & CEO  

Signatures

 /s/ Thomas M. Joyce   11/24/2010
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Transactions executed in accordance with a previously established Rule 10b5-1 trading plan. Stock options exercised were previously reported and have an expiration date of January 1, 2011.
(2) Represents the sale of 50,000 shares in 9 separate transactions at prices ranging from $13.20 to $13.36 per share, resulting in a weighted average sale price per share of $13.279. Reporting person undertakes to provide the SEC, the Issuer, or security holder full information pertaining to the number of shares sold at each separate price.
(3) Represents the sale of 50,000 shares in 8 separate transactions at prices ranging from $13.06 to $13.18 per share, resulting in a weighted average sale price per share of $13.115. Reporting person undertakes to provide the SEC, the Issuer, or security holder full information pertaining to the number of shares sold at each separate price.
(4) Breakdown of aggregate number of derivative securities beneficially owned following reported transactions (which have different exercise and expiration dates): 363,630 options and 1,000,000 restricted stock units ("RSUs"). As previously reported, the RSUs reported in Table II of this filing vest based upon the stock price of the Issuer's Class A Common Stock reaching certain specified levels.

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