# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001193125-26-067009
Filing Date
2026-02-24
Accepted
2026-02-24 16:14:27
Documents
121
Period of Report
2025-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-K | mktx-20251231.htm iXBRL | 10-K | 6502395
2 | EX-21.1 | mktx-ex21_1.htm | EX-21.1 | 28946
3 | EX-23.1 | mktx-ex23_1.htm | EX-23.1 | 5394
4 | EX-31.1 | mktx-ex31_1.htm | EX-31.1 | 13832
5 | EX-31.2 | mktx-ex31_2.htm | EX-31.2 | 13194
6 | EX-32.1 | mktx-ex32_1.htm | EX-32.1 | 8528
7 | EX-32.2 | mktx-ex32_2.htm | EX-32.2 | 8032
8 | GRAPHIC | img162415102_0.jpg | GRAPHIC | 47796
| Complete submission text file | 0001193125-26-067009.txt |  | 27275026

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
9 | XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT | mktx-20251231.xsd | EX-101.SCH | 2574133
124 | EXTRACTED XBRL INSTANCE DOCUMENT | mktx-20251231_htm.xml | XML | 7014057

Mailing Address 55 HUDSON YARDS, 15TH FLOOR NEW YORK NY 10001
Business Address 55 HUDSON YARDS, 15TH FLOOR NEW YORK NY 10001 212-831-6000
MARKETAXESS HOLDINGS INC (Filer) CIK: 0001278021 (see all company filings)

EIN.: 522230784 | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-34091 | Film No.: 26671743
SIC: 6211 Security Brokers, Dealers & Flotation Companies
(CF Office: 09 Crypto Assets)