MarketAxess Holdings, Inc.

Historical 13F Holders

Symbol
MKTX
CUSIP
57060D108
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for 57060D108 since 12/18/2024, newest first.

Filer % of Class Filed
North Reef Capital Management LP 13G/A Amendment 1
9.6% 8/14/2026
Event 6/30/2026
AQR Capital Management, LLC 13G/A Amendment 1
5.6% 8/13/2026
Event 6/30/2026
Primecap Management Co/CA/ 13G/A Amendment 3 9.9% 8/6/2026
Event 6/30/2026
North Reef Capital Management LP 13G
5.3% 5/15/2026
Event 3/31/2026
FMR LLC 13G/A Amendment 2
4.2% 5/6/2026
Event 3/31/2026
Vanguard Capital Management LLC 13G 5.3% 4/30/2026
Event 3/31/2026
Vanguard Portfolio Management LLC 13G 6.1% 4/29/2026
Event 3/31/2026
Vanguard Group Inc 13G/A Amendment 14 0% 3/27/2026
Event 3/13/2026
AQR Capital Management, LLC 13G
6.9% 2/13/2026
Event 12/31/2025
Primecap Management Co/CA/ 13G/A Amendment 1 8.5% 2/11/2026
Event 12/31/2025
BlackRock, Inc. 13G/A Amendment 1 10.9% 2/6/2026
Event 1/31/2026
BlackRock, Inc. 13G 9.9% 1/21/2026
Event 12/31/2025
T. Rowe Price Investment Management, Inc. 13G/A Amendment 1 3.7% 11/14/2025
Event 9/30/2025
Primecap Management Co/CA/ 13G 6.0% 11/13/2025
Event 9/30/2025
Vanguard Group Inc 13G/A Amendment 13 10.3% 10/31/2025
Event 9/30/2025
BlackRock, Inc. 13G/A Amendment 4 4.2% 10/17/2025
Event 9/30/2025
FMR LLC 13G/A Amendment 1
6.1% 8/6/2025
Event 6/30/2025
BlackRock, Inc. 13G/A Amendment 3 6.6% 4/17/2025
Event 3/31/2025
Guardian Capital LP 13G/A Amendment 2
4.7% 2/14/2025
Event 12/31/2024

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 12 3.69 k $604 k
2026 Q2 422 44.0 M $4.49 B
2026 Q1 465 38.2 M $6.31 B
2025 Q4 509 36.6 M $6.64 B
2025 Q3 482 40.7 M $6.30 B
2025 Q2 560 37.3 M $8.33 B
2025 Q1 538 37.2 M $8.06 B
2024 Q4 543 37.7 M $8.52 B
2024 Q3 534 37.4 M $9.63 B
2024 Q2 496 38.2 M $7.66 B
2024 Q1 496 38.1 M $8.36 B
2023 Q4 535 37.9 M $11.2 B
2023 Q3 522 37.4 M $7.99 B
2023 Q2 542 37.9 M $9.92 B
2023 Q1 575 37.4 M $14.6 B
2022 Q4 531 38.7 M $10.8 B
2022 Q3 513 36.9 M $8.21 B
2022 Q2 532 36.4 M $9.31 B
2022 Q1 533 36.6 M $12.4 B
2021 Q4 535 36.7 M $15.1 B
2021 Q3 531 36.5 M $15.3 B
2021 Q2 580 36.3 M $16.8 B
2021 Q1 624 35.9 M $17.9 B
2020 Q4 643 35.6 M $20.4 B
2020 Q3 590 35.0 M $16.8 B
2020 Q2 599 35.2 M $17.6 B
2020 Q1 514 36.1 M $12.0 B
2019 Q4 540 37.6 M $14.2 B
2019 Q3 494 36.9 M $12.1 B
2019 Q2 446 38.2 M $12.3 B
2019 Q1 358 38.9 M $9.57 B
2018 Q4 363 38.5 M $8.14 B
2018 Q3 330 38.3 M $6.83 B
2018 Q2 336 37.8 M $7.47 B
2018 Q1 337 37.6 M $8.17 B
2017 Q4 337 37.1 M $7.49 B
2017 Q3 324 34.8 M $6.43 B
2017 Q2 349 34.7 M $6.97 B
2017 Q1 338 34.2 M $6.42 B
2016 Q4 334 34.1 M $5.02 B
2016 Q3 320 34.2 M $5.66 B
2016 Q2 302 35.1 M $5.10 B
2016 Q1 272 36.2 M $4.52 B
2015 Q4 254 37.3 M $4.16 B
2015 Q3 236 36.9 M $3.43 B
2015 Q2 232 35.8 M $3.32 B
2015 Q1 212 35.4 M $2.94 B
2014 Q4 195 36.6 M $2.63 B
2014 Q3 184 37.3 M $2.31 B
2014 Q2 180 37.7 M $2.04 B
2014 Q1 195 35.6 M $2.10 B