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 | — |
| 4 | Insider transaction | Oct 13, 2026 | Oct 12, 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 | — |
| 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 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 |
| 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 |
| 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 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 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 |
| 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 | — |
| 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 | — |
| 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 | — |
| 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | 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 |
| 4 | Insider transaction | Jun 3, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 3, 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 | — |
| 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 |
| 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 | — |
| 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 |
| 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 | — |
| 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 | — |
| 4 | Insider transaction | Jun 11, 2024 | Jun 7, 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 |
| 4 | Insider transaction | May 24, 2024 | May 22, 2024 |
| 3 | Initial insider ownership | May 24, 2024 | May 23, 2024 |
| 4 | Insider transaction | Mar 1, 2024 | Mar 1, 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 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 144 | Notice of proposed sale | Feb 16, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| 3 | Initial insider ownership | Feb 7, 2024 | Feb 1, 2024 |
| 4 | Insider transaction | Feb 2, 2024 | Jan 31, 2024 |
| 4 | Insider transaction | Feb 2, 2024 | Jan 31, 2024 |
| 4 | Insider transaction | Feb 2, 2024 | Jan 31, 2024 |
| 4 | Insider transaction | Feb 2, 2024 | Jan 31, 2024 |
| 4 | Insider transaction | Feb 2, 2024 | Jan 31, 2024 |
| 4 | Insider transaction | Feb 2, 2024 | Jan 31, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 25, 2024 | — |
| 4 | Insider transaction | Jan 23, 2024 | Jan 22, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 16, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 16, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 16, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 16, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 12, 2024 | Jan 10, 2024 |
| 4 | Insider transaction | Dec 11, 2023 | Dec 8, 2023 |
| 144 | Notice of proposed sale | Dec 8, 2023 | — |
| 4 | Insider transaction | Nov 28, 2023 | Nov 27, 2023 |
| 144 | Notice of proposed sale | Nov 27, 2023 | — |
| 4 | Insider transaction | Nov 21, 2023 | Nov 20, 2023 |
| 4 | Insider transaction | Nov 9, 2023 | Nov 8, 2023 |
| 4 | Insider transaction | Oct 25, 2023 | Oct 23, 2023 |
| 3 | Initial insider ownership | Sep 14, 2023 | Sep 13, 2023 |
| 4 | Insider transaction | Aug 29, 2023 | Aug 28, 2023 |
| 4 | Insider transaction | Aug 15, 2023 | Aug 14, 2023 |
| 4 | Insider transaction | Aug 7, 2023 | Aug 1, 2023 |
| 4 | Insider transaction | Jun 15, 2023 | Jun 15, 2023 |
| 144 | Notice of proposed sale | Jun 15, 2023 | — |
| 4 | Insider transaction | Jun 15, 2023 | Jun 14, 2023 |
| 144 | Notice of proposed sale | Jun 14, 2023 | — |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Apr 5, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Mar 10, 2023 | Mar 8, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 8, 2023 | — |
| 4 | Insider transaction | Mar 7, 2023 | Mar 3, 2023 |
| 4 | Insider transaction | Mar 3, 2023 | Mar 1, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 15, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 15, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 15, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 15, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 15, 2023 |
| 4 | Insider transaction | Feb 17, 2023 | Feb 15, 2023 |
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.
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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)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.