EX-23.1 2 y18398exv23w1.htm EX-23.1: CONSENT OF PRICEWATERHOUSECOOPERS LLP EX-23.1
 

Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
      We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (File Number 333-120229) of MarketAxess Holdings Inc. of our report dated March 13, 2006, relating to the consolidated financial statements, management’s assessment of the effectiveness of internal control over financial reporting and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.
/s/ PricewaterhouseCoopers LLP
 
PricewaterhouseCoopers LLP
New York, New York
March 13, 2006

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