# EDGAR Filing Document

**Accession Number:** 0001052461
**File Stem:** 0001052461-26-000004
**Filing Date:** 2026-2
**Character Count:** 2758
**Document Hash:** ebb9a14df5d0ecfb47926421bf323f5e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001052461-26-000004.hdr.sgml**: 20260227

**ACCESSION NUMBER**: 0001052461-26-000004

**CONFORMED SUBMISSION TYPE**: X-17A-5

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260227

**DATE AS OF CHANGE**: 20260227

**EFFECTIVENESS DATE**: 20260227

**PERIOD START**: 20250101

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MARKETAXESS CORPORATION
- **CENTRAL INDEX KEY:** 0001052461

**ORGANIZATION NAME:**
- **EIN:** 954649492
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0630

**FILING VALUES:**
- **FORM TYPE:** X-17A-5
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 008-50727
- **FILM NUMBER:** 26699656

**BUSINESS ADDRESS:**
- **STREET 1:** 55 HUDSON YARDS
- **STREET 2:** 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10001
- **BUSINESS PHONE:** 212-813-6347

**MAIL ADDRESS:**
- **STREET 1:** 55 HUDSON YARDS
- **STREET 2:** 15TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10001

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MARKETAXESS Corp
- **DATE OF NAME CHANGE:** 20250627

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MARKETAXESS CORPORATION
- **DATE OF NAME CHANGE:** 20200414

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MARKETAXESS Corp
- **DATE OF NAME CHANGE:** 20200327

### Attached PDF Documents

**Attachment 1:** `MAC_Public_2025.pdf`

_No text found in this document._

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM X-17A-5

### ANNUAL AUDITED REPORT

### Filer Information

**Filer CIK:** 0001052461

**Filer CCC:** XXXXXXXX

**Is this a LIVE or TEST filing?:** LIVE

**Would you like a Return Copy?:** Yes

### Submission Information

**Report Period Begin Date:** 01-01-2025

**Report Period End Date:** 12-31-2025

**Type of Registrant:** Broker-dealer

**Any material weaknesses identified?:** No

### Registrant Identification

**Name of Broker-Dealer:** MARKETAXESS CORPORATION

**Business Address:** 55 HUDSON YARDS, 15TH FLOOR, NEW YORK, NY, 10001

**Contact Person:** Michael Cianciulli

**Contact Phone:** 212-813-6270

### Independent Public Accountant Identification

**Accountant Name:** PricewaterhouseCoopers LLP

**Accountant Address:** 300 Madison Avenue, New York, NY, 10017

**Accountant Type:** Certified Public Accountant

### OATH OR AFFIRMATION

I, **Michael R. Cianciulli**, swear (or affirm) that, to the best of my knowledge and belief, the accompanying financial statements and supporting schedules pertaining to the firm of **MARKETAXESS CORPORATION**, as of **12-31-2025**, are true and correct.

**Signature:** Michael R. Cianciulli

**Title:** Head of External Reporting and Compensation Accounting

**Notarized:** Yes