Marketaxess Holdings Inc SEC filings MKTX
Marketaxess Holdings Inc has 1,001 filings in SEC EDGAR's recent list, going back to Feb 17, 2012. Its latest annual report, Form ARS, was filed on Apr 29, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 7, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 29, 2026 (shareholder vote results). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
Oct 29, 2026 | Oct 29, 2026 |
| 8-K |
Current report
Other events
|
Oct 23, 2026 | Oct 23, 2026 |
| 8-K |
Current report
Results of operations, Other events
|
Oct 23, 2026 | Oct 23, 2026 |
| 8-K |
Current report
Other events
|
Oct 22, 2026 | Oct 21, 2026 |
| 4 | Insider transaction | Oct 13, 2026 | Oct 12, 2026 |
| DEFA14A | Additional proxy material | Sep 29, 2026 | — |
| 8-K |
Current report
Other events
|
Sep 29, 2026 | Sep 25, 2026 |
| DEFM14A | Filing | Sep 18, 2026 | — |
| 4 | Insider transaction | Sep 11, 2026 | Sep 10, 2026 |
| 4 | Insider transaction | Sep 11, 2026 | Sep 10, 2026 |
| 144 | Notice of proposed sale | Sep 10, 2026 | — |
| PREM14A | Filing | Sep 4, 2026 | Sep 4, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 4 | Insider transaction | Aug 13, 2026 | Aug 12, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2026 | — |
| 4 | Insider transaction | Aug 10, 2026 | Aug 10, 2026 |
| 144 | Notice of proposed sale | Aug 10, 2026 | — |
| 4 | Insider transaction | Aug 7, 2026 | Aug 7, 2026 |
| 10-Q | Quarterly report | Aug 7, 2026 | Jun 30, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2026 | — |
| DFAN14A | Filing | Jul 30, 2026 | — |
| DEFA14A | Additional proxy material | Jul 30, 2026 | — |
| 8-K |
Current report
Results of operations, Other events
|
Jul 30, 2026 | Jul 30, 2026 |
| DEFA14A | Additional proxy material | Jul 30, 2026 | — |
| 8-K |
Current report
Material agreement, Officer or director change, Regulation FD disclosure
|
Jul 30, 2026 | Jul 29, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 10, 2026 |
| 4 | Insider transaction | Jun 18, 2026 | Jun 18, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 10, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 3, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2026 | — |
| 144 | Notice of proposed sale | May 11, 2026 | — |
| 4 | Insider transaction | May 11, 2026 | May 11, 2026 |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Other events
|
May 7, 2026 | May 7, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 6, 2026 | — |
| 4 | Insider transaction | May 4, 2026 | May 1, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2026 | — |
| ARS | Annual report to shareholders | Apr 29, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 29, 2026 | — |
| DEF 14A | Proxy statement | Apr 29, 2026 | Apr 29, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| 8-K/A |
Amended current report
Officer or director change
|
Apr 17, 2026 | Jan 22, 2026 |
| 4 | Insider transaction | Apr 10, 2026 | Apr 10, 2026 |
| 4 | Insider transaction | Apr 6, 2026 | Apr 3, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 3 | Initial insider ownership | Mar 16, 2026 | Mar 16, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 10, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 3 | Initial insider ownership | Mar 2, 2026 | Mar 1, 2026 |
| 3 | Initial insider ownership | Mar 2, 2026 | Mar 1, 2026 |
| 10-K | Annual report | Feb 24, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Officer or director change
|
Feb 17, 2026 | Feb 16, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 15, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 13, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 11, 2026 | — |
| 4 | Insider transaction | Feb 10, 2026 | Feb 10, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 6, 2026 | — |
| 8-K |
Current report
Material agreement, Results of operations, New debt, Other events
|
Feb 6, 2026 | Feb 4, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 26, 2026 | Jan 22, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 21, 2026 | — |
| 4 | Insider transaction | Jan 12, 2026 | Jan 12, 2026 |
| 144 | Notice of proposed sale | Jan 12, 2026 | — |
| 4 | Insider transaction | Dec 12, 2025 | Dec 12, 2025 |
| 144 | Notice of proposed sale | Dec 12, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 9, 2025 | Dec 9, 2025 |
| 4 | Insider transaction | Nov 26, 2025 | Nov 25, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 13, 2025 | — |
| 10-Q | Quarterly report | Nov 7, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations, Other events
|
Nov 7, 2025 | Nov 7, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 31, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 17, 2025 | — |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 3 | Initial insider ownership | Sep 29, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Sep 15, 2025 | Sep 12, 2025 |
| 144 | Notice of proposed sale | Sep 12, 2025 | — |
| 4 | Insider transaction | Sep 9, 2025 | Sep 8, 2025 |
| 4 | Insider transaction | Aug 15, 2025 | Aug 13, 2025 |
| 10-Q | Quarterly report | Aug 6, 2025 | Jun 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2025 | — |
| 8-K |
Current report
Results of operations, Other events
|
Aug 6, 2025 | Aug 6, 2025 |
| 3 | Initial insider ownership | Jul 1, 2025 | Jun 23, 2025 |
| 4 | Insider transaction | Jun 11, 2025 | Jun 11, 2025 |
| 144 | Notice of proposed sale | Jun 11, 2025 | — |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 5, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 3, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
May 21, 2025 | May 16, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 14, 2025 |
| 144 | Notice of proposed sale | May 14, 2025 | — |
| 10-Q | Quarterly report | May 7, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations, Other events
|
May 7, 2025 | May 7, 2025 |
| ARS | Annual report to shareholders | Apr 23, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 23, 2025 | — |
| DEF 14A | Proxy statement | Apr 23, 2025 | Apr 22, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 17, 2025 | — |
| 4 | Insider transaction | Mar 21, 2025 | Mar 20, 2025 |
| 4 | Insider transaction | Mar 10, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Mar 1, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Mar 1, 2025 |
| 3 | Initial insider ownership | Mar 3, 2025 | Mar 1, 2025 |
| 10-K | Annual report | Feb 24, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 15, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 15, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 15, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 15, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 15, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 15, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 8-K |
Current report
Results of operations, Other events
|
Feb 6, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Jan 31, 2025 | Jan 29, 2025 |
| 4 | Insider transaction | Jan 31, 2025 | Jan 29, 2025 |
| 4 | Insider transaction | Jan 31, 2025 | Jan 29, 2025 |
| 4 | Insider transaction | Jan 31, 2025 | Jan 29, 2025 |
| 4 | Insider transaction | Jan 31, 2025 | Jan 31, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 27, 2025 | Jan 23, 2025 |
| 4 | Insider transaction | Jan 2, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Dec 9, 2024 | Dec 9, 2024 |
| 144 | Notice of proposed sale | Dec 9, 2024 | — |
| 4 | Insider transaction | Dec 3, 2024 | Dec 2, 2024 |
| 4 | Insider transaction | Nov 14, 2024 | Nov 12, 2024 |
| SC 13G | Ownership over 5% (passive) | Nov 14, 2024 | — |
| 144 | Notice of proposed sale | Nov 12, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 12, 2024 | — |
| 10-Q | Quarterly report | Nov 6, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Officer or director change, Regulation FD disclosure, Other events
|
Nov 6, 2024 | Nov 4, 2024 |
| 4 | Insider transaction | Sep 9, 2024 | Sep 6, 2024 |
| 4 | Insider transaction | Aug 16, 2024 | Aug 14, 2024 |
| 144 | Notice of proposed sale | Aug 14, 2024 | — |
| 4 | Insider transaction | Aug 14, 2024 | Aug 13, 2024 |
| 144 | Notice of proposed sale | Aug 13, 2024 | — |
| 4 | Insider transaction | Aug 9, 2024 | Aug 8, 2024 |
| 144 | Notice of proposed sale | Aug 8, 2024 | — |
| 144 | Notice of proposed sale | Aug 8, 2024 | — |
| 10-Q | Quarterly report | Aug 6, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations, Other events
|
Aug 6, 2024 | Aug 6, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jul 19, 2024 | Jul 17, 2024 |
| 4 | Insider transaction | Jun 11, 2024 | Jun 7, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 4, 2024 | Jun 3, 2024 |
| 8-K/A |
Amended current report
Officer or director change
|
May 30, 2024 | Feb 21, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 22, 2024 |
| 3 | Initial insider ownership | May 24, 2024 | May 23, 2024 |
| 10-Q | Quarterly report | May 7, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations, Other events
|
May 7, 2024 | May 7, 2024 |
| ARS | Annual report to shareholders | Apr 24, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 24, 2024 | — |
| DEF 14A | Proxy statement | Apr 24, 2024 | Apr 22, 2024 |
| PRE 14A | Preliminary proxy statement | Apr 12, 2024 | Apr 12, 2024 |
| 8-K |
Current report
Officer or director change
|
Apr 5, 2024 | Apr 4, 2024 |
| 4 | Insider transaction | Mar 1, 2024 | Mar 1, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 26, 2024 | Feb 21, 2024 |
| 10-K | Annual report | Feb 22, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Security Brokers, Dealers & Flotation Companies (SIC 6211)
- Listed as
- MKTX (Nasdaq)
- Fiscal year ends
- December 31
- Headquarters
- New York, NY
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1278021
- Former names
- MARKETAXESS HOLDINGS INC (until Nov 5, 2026); MARKETAXESS HOLDING INC (until Apr 1, 2004)
Other Security Brokers, Dealers & Flotation Companies companies
- Morgan Stanley MS
- Goldman Sachs Group Inc GS
- BlackRock, Inc. BLK
- Schwab Charles Corp SCHW
- Interactive Brokers Group, Inc. IBKR
- Robinhood Markets, Inc. HOOD
- Raymond James Financial Inc RJF
- Nomura Holdings Inc NMR
All 34 Security Brokers, Dealers & Flotation Companies companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.