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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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) 11/16/2010 (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 06/15/2010   J(1)   400,000 D $ 0 41,759 D   Class A Common Stock 06/15/2010   J(1)   400,000 A $ 0 400,000 I By Joyce Family 2010 GRAT Class A Common Stock 08/20/2010   J(2)   123,939 D $ 0 76,061 I By Joyce Family 2009 GRAT Class A Common Stock 08/20/2010   J(2)   123,939 A $ 0 165,698 D   Class A Common Stock 11/16/2010   M   50,000 A $ 9.84 215,698 D   Class A Common Stock 11/16/2010   S(3)   50,000 D $ 13.844 (4) 165,698 D   Class A Common Stock 11/17/2010   M   50,000 A $ 9.84 215,698 D   Class A Common Stock 11/17/2010   S(3)   50,000 D $ 13.527 (5) 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)               200,000 I By Joyce Family 2009 GRAT II Class A Common Stock (Previously Reported)               34,695 I By Trust for Children

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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

11/16/2010

M

50,000

01/01/2009

01/01/2011

Class A Common Stock

50,000

$ 9.84

1,613,630

D

Stock Option (Right to Buy)

$ 9.84

11/17/2010

M

50,000

01/01/2009

01/01/2011

Class A Common Stock

50,000

$ 9.84

1,563,630 (6)

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		11/18/2010
**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)	Effective June 15, 2010, 400,000 shares held directly by reporting person were contributed to a 2010 grantor retained annuity trust (Joyce Family 2010 GRAT), which did not require reporting at time of event.
(2)	Represents distribution of shares from the Joyce Family 2009 GRAT to reporting person, effective August 20, 2010. Such transaction did not require reporting at time of event.
(3)	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.
(4)	Represents the sale of 50,000 shares in 15 separate transactions at prices ranging from $13.79 to $13.95 per share, resulting in a weighted average sale price per share of $13.844. 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.
(5)	Represents the sale of 50,000 shares in 15 separate transactions at prices ranging from $13.46 to $13.73 per share, resulting in a weighted average sale price per share of $13.527. 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.
(6)	Breakdown of aggregate number of derivative securities beneficially owned following reported transactions (which have different exercise and expiration dates): 563,630 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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