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 *
Trudeau Robert
  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
(Last)
(First)
(Middle)
C/O TECHNOLOGY CROSSOVER VENTURES, 528 RAMONA STREET
3. Date of Earliest Transaction (Month/Day/Year)
07/30/2010
(Street)

PALO ALTO, CA 94301
4. If Amendment, Date 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
(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
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)

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

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Trudeau Robert
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301
  X   X   May be part of a 13(d) group
HOAG JAY C
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301
    X   May be part of a 13(d) group
KIMBALL RICK
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301
    X   May be part of a 13(d) group
DREW JOHN
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301
    X   May be part of a 13(d) group
REYNOLDS JON Q JR
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301
    X   May be part of a 13(d) group
GRIFFITH WILLIAM
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301
    X   May be part of a 13(d) group

Signatures

 Frederic D. Fenton Authorized signatory for Robert W. Trudeau   08/03/2010
**Signature of Reporting Person Date

 Frederic D. Fenton Authorized signatory for Jay C. Hoag   08/03/2010
**Signature of Reporting Person Date

 Frederic D. Fenton Authorized signatory for Richard H. Kimball   08/03/2010
**Signature of Reporting Person Date

 Frederic D. Fenton Authorized signatory for John L. Drew   08/03/2010
**Signature of Reporting Person Date

 Frederic D. Fenton Authorized signatory for Jon Q. Reynolds Jr.   08/03/2010
**Signature of Reporting Person Date

 Frederic D. Fenton Authorized signatory for William J.G. Griffith IV   08/03/2010
**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) 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.

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