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Filing Details

Accession Number:: 0001343722-11-000001
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2011-05-04 17:29:39
Reporting Period:: 2011-05-02

Filing Date:: 2011-05-04
Accepted Time:: 2011-05-04 17:29:39
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1278021	Marketaxess Holdings Inc	MKTX	Security Brokers, Dealers & Flotation Companies (6211)	522230784

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1343722	Robert Trudeau	C/O Technology Crossover Ventures 528 Ramona Street Palo Alto CA 94301		Yes	No	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2011-05-02	992,187	$23.51	1,289,841	No	4	S	Indirect	TCV VI, L.P.
Common Stock	Disposition	2011-05-02	7,813	$23.51	10,158	No	4	S	Indirect	TCV Member Fund, L.P.
Common Stock	Disposition	2011-05-02	2,770	$22.83	4,716	No	4	S	Indirect	TCV VI Management, L.L.C.

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	TCV VI, L.P.
No	4	S	Indirect	TCV Member Fund, L.P.
No	4	S	Indirect	TCV VI Management, L.L.C.

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	2,462	Indirect	Robert W. Trudeau

Footnotes

These shares are directly held by TCV VI, L.P. Robert W. Trudeau ("Trudeau") is a Class A Member of Technology Crossover Management VI, L.L.C. ("TCM VI"), which is the sole general partner of TCV VI, L.P. Trudeau may be deemed to beneficially own the shares held by TCV VI, L.P., but Trudeau disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.
These shares are directly held by TCV Member Fund, L.P. ("TCV MF"). Trudeau is a Class A Member of TCM VI, which is a general partner of TCV MF. Trudeau may be deemed to beneficially own certain of the shares held by TCV MF, but Trudeau disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.
The price reported reflects the weighted average sale price. This transaction was executed in multiple trades at prices ranging from $22.8200 to $22.8500. The Reporting Person hereby undertakes to provide upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
These shares are directly held by TCV VI Management, L.L.C . ("TCV VI Management"). Trudeau is a member of TCV VI Management, but disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.
These shares are directly held by Trudeau. Trudeau has sole voting and dispositive power over the shares; however, TCV VI Management owns 100% of the pecuniary interest therein. Trudeau is a member of TCV VI Management, but disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.