SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Trudeau Robert (Last) (First) (Middle) C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET (Street) PALO ALTO CA 94301 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol MARKETAXESS HOLDINGS INC [ MKTX ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner Officer (give title below) X Other (specify below) May be part of a 13(d) group
	3. Date of Earliest Transaction (Month/Day/Year) 07/30/2010
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

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
Common Stock	07/30/2010		A		4,923(1)	A	$0	4,923(2)	I	Robert W. Trudeau(3)
Common Stock								8,403(4)	I	TCV VI Management, L.L.C.(5)

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 Securities Underlying Derivative Security (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: 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

1. Name and Address of Reporting Person* Trudeau Robert (Last) (First) (Middle) C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET (Street) PALO ALTO CA 94301 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) X Other (specify below) May be part of a 13(d) group

1. Name and Address of Reporting Person* HOAG JAY C (Last) (First) (Middle) C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET (Street) PALO ALTO CA 94301 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) X Other (specify below) May be part of a 13(d) group

1. Name and Address of Reporting Person* KIMBALL RICK (Last) (First) (Middle) C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET (Street) PALO ALTO CA 94301 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) X Other (specify below) May be part of a 13(d) group

1. Name and Address of Reporting Person* DREW JOHN (Last) (First) (Middle) C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET (Street) PALO ALTO CA 94301 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) X Other (specify below) May be part of a 13(d) group

1. Name and Address of Reporting Person* REYNOLDS JON Q JR (Last) (First) (Middle) C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET (Street) PALO ALTO CA 94301 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) X Other (specify below) May be part of a 13(d) group

1. Name and Address of Reporting Person* GRIFFITH WILLIAM (Last) (First) (Middle) C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET (Street) PALO ALTO CA 94301 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) X Other (specify below) May be part of a 13(d) group

Explanation of Responses:

1. Represents a grant of restricted stock pursuant to the issuer's 2004 Incentive Plan (as amended and restated effective April 28, 2006).

2. Excludes 4,178 shares that were previously held by Robert W. Trudeau ("Trudeau"), but were transferred from Trudeau to TCV VI Management, L.L.C. ("TCM VI") on June 7, 2010, and are now held directly by TCM VI.

3. These shares of restricted stock are directly held by Trudeau. Trudeau has sole voting and dispositive power over the shares; however, TCM VI owns 100% of the pecuniary interest therein. Trudeau, Jay C. Hoag, Richard H. Kimball, John L. Drew, Jon Q. Reynolds, Jr. and William J.G. Griffith IV (collectively, the "TCM Members") are members of TCM VI, but disclaim beneficial ownership of such shares except to the extent of their pecuniary interest therein.

4. Excludes 4,923 shares directly held of record by Trudeau, but includes 4,178 shares that were previously held directly by Trudeau, but were transferred from Trudeau to TCM VI on June 7, 2010, and are now held directly by TCM VI.

5. These shares are directly held by TCM VI. The TCM Members are members of TCM VI, but disclaim beneficial ownership of such shares except to the extent of their pecuniary interest therein.

Remarks:

	Frederic D. Fenton Authorized signatory for Robert W. Trudeau	08/03/2010
	Frederic D. Fenton Authorized signatory for Jay C. Hoag	08/03/2010
	Frederic D. Fenton Authorized signatory for Richard H. Kimball	08/03/2010
	Frederic D. Fenton Authorized signatory for John L. Drew	08/03/2010
	Frederic D. Fenton Authorized signatory for Jon Q. Reynolds Jr.	08/03/2010
	Frederic D. Fenton Authorized signatory for William J.G. Griffith IV	08/03/2010
	** Signature of Reporting Person	Date
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