MARKETAXESS HLDGS INC (MKTX)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
368
Reporting holders
$4.8B
Reported value
112.2%
Of shares outstanding
5.7%
Held as options
-50
Holder change
Institutions report 39,488,531 shares against 35,192,891 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $453.9M | 3,999,836 | 0.01% | 8q | -1.8%-$8.5M |
| PRIMECAP MANAGEMENT CO/CA/ | $397.8M | 3,504,905 | 0.24% | 31q | +4.7%+$17.9M |
| North Reef Capital Management LP | $385.3M | 3,395,000 | 14.77% | 10q | +81.1%+$172.5M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $238.4M | 2,100,273 | 0.01% | 2q | -2.9%-$7.2M |
| AQR CAPITAL MANAGEMENT LLC | $222.8M | 1,987,288 | 0.08% | 31q | -26.0%-$78.1M |
| VANGUARD CAPITAL MANAGEMENT LLC | $175.5M | 1,546,670 | 0.00% | 2q | -3.9%-$7.1M |
| FMR LLC | $159.5M | 1,404,998 | 0.01% | 31q | -7.5%-$13.0M |
| STATE STREET CORP | $145.4M | 1,281,769 | 0.00% | 31q | HELD |
| NEUBERGER BERMAN GROUP LLC | $139.6M | 1,229,929 | 0.09% | 31q | +27.3%+$30.0M |
| MILLENNIUM MANAGEMENT LLC | $131.2M | 109,590 | 0.05% | 31q | -89.9%-$1.2B |
| GUARDCAP ASSET MANAGEMENT Ltd | $124.3M | 1,072,648 | 4.42% | 31q | +66.7%+$49.8M |
| CITIGROUP INC | $120.8M | 64,762 | 0.04% | 31q | +202.8%+$80.9M |
| GOLDMAN SACHS GROUP INC | $117.0M | 1,031,309 | 0.01% | 31q | +102.6%+$59.3M |
| BANK OF MONTREAL /CAN/ | $115.4M | 1,017,024 | 0.04% | 31q | HELD |
| GEODE CAPITAL MANAGEMENT, LLC | $112.9M | 994,772 | 0.01% | 31q | +15.3%+$15.0M |
| VAN ECK ASSOCIATES CORP | $104.9M | 924,617 | 0.06% | 27q | -25.4%-$35.7M |
| DIMENSIONAL FUND ADVISORS LP | $67.8M | 597,894 | 0.01% | 31q | +2.8%+$1.9M |
| NORGES BANK | $65.0M | 572,422 | 0.01% | 32q | +13.6%+$7.8M |
| CITADEL ADVISORS LLC | $62.2M | 481,689 | 0.01% | 31q | +486.3%+$51.6M |
| TWO SIGMA INVESTMENTS, LP | $61.7M | 543,890 | 0.04% | 13q | +3.8%+$2.3M |
| Azora Capital LP | $58.2M | 513,081 | 2.45% | new | NEW |
| Davis Asset Management, L.P. | $56.7M | 500,000 | 1.44% | 2q | +359.4%+$44.4M |
| JPMORGAN CHASE & CO | $48.3M | 438,001 | 0.00% | 31q | +1.2%+$571.0K |
| MORGAN STANLEY | $48.0M | 422,864 | 0.00% | 35q | -13.8%-$7.7M |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $44.5M | 392,065 | 0.16% | 7q | +3992.1%+$43.4M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $37.5M | 330,815 | 0.00% | 31q | -2.3%-$873.0K |
| Sixth Street Partners Management Company, L.P. | $37.5M | 330,815 | 0.00% | new | NEW |
| Public Sector Pension Investment Board | $35.7M | 314,676 | 0.05% | 29q | +63.7%+$13.9M |
| BANK OF AMERICA CORP /DE/ | $34.4M | 303,517 | 0.00% | 31q | +15.0%+$4.5M |
| UBS Group AG | $31.6M | 278,745 | 0.00% | 31q | +2.4%+$738.5K |
| Bank of New York Mellon Corp | $29.2M | 257,642 | 0.00% | 31q | -11.1%-$3.7M |
| RDST Capital LLC | $28.0M | 247,112 | 2.32% | 6q | -16.3%-$5.5M |
| NORTHERN TRUST CORP | $28.0M | 246,521 | 0.00% | 31q | +4.3%+$1.2M |
| COOKE & BIELER LP | $27.1M | 238,755 | 0.31% | 3q | +5.5%+$1.4M |
| VANGUARD FIDUCIARY TRUST CO | $25.4M | 223,656 | 0.01% | 2q | -2.5%-$655.0K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $23.2M | 204,309 | 0.02% | 18q | HELD |
| VICTORY CAPITAL MANAGEMENT INC | $23.0M | 202,731 | 0.01% | 31q | -1.1%-$249.8K |
| RENAISSANCE TECHNOLOGIES LLC | $22.7M | 200,000 | 0.03% | 10q | +19.7%+$3.7M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $21.9M | 32,579 | 0.00% | 31q | HELD |
| Connor, Clark & Lunn Investment Management Ltd. | $21.2M | 186,658 | 0.04% | 10q | +7.2%+$1.4M |
| PRINCIPAL FINANCIAL GROUP INC | $19.7M | 173,312 | 0.01% | 31q | -4.7%-$963.1K |
| Freestone Grove Partners LP | $19.6M | 172,799 | 0.13% | new | NEW |
| Sone Capital Management, LLC | $17.7M | 155,522 | 1.34% | 7q | -2.8%-$504.3K |
| TUDOR INVESTMENT CORP ET AL | $17.0M | 137,847 | 0.02% | new | NEW |
| Nuveen, LLC | $16.8M | 148,468 | 0.00% | 6q | HELD |
| Invesco Ltd. | $16.0M | 140,817 | 0.00% | 31q | +19.0%+$2.6M |
| Champlain Investment Partners, LLC | $15.4M | 136,087 | 0.40% | 3q | -35.2%-$8.4M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $13.8M | 122,005 | 0.01% | 8q | -58.7%-$19.7M |
| M&G PLC | $13.7M | 121,309 | 0.07% | new | NEW |
| BANK OF NOVA SCOTIA | $13.1M | 115,410 | 0.02% | 29q | +368.9%+$10.3M |
| CIBC Bancorp USA Inc. | $13.0M | 114,968 | 0.02% | 2q | +3373.4%+$12.7M |
| RAYMOND JAMES FINANCIAL INC | $13.0M | 114,278 | 0.00% | 7q | -6.0%-$834.9K |
| ALGERT GLOBAL LLC | $12.8M | 112,400 | 0.15% | 10q | +189.1%+$8.3M |
| HEARTLAND ADVISORS INC | $11.9M | 104,926 | 0.53% | 3q | +79.9%+$5.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $11.9M | 104,853 | 0.00% | 31q | -2.1%-$256.1K |
| Walleye Capital LLC | $11.8M | 94,002 | 0.04% | 15q | -71.7%-$30.0M |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $10.5M | 92,100 | 0.01% | 6q | -36.8%-$6.1M |
| Invenomic Capital Management LP | $10.3M | 90,441 | 0.61% | new | NEW |
| Legal & General Group Plc | $9.6M | 84,460 | 0.00% | 31q | -6.9%-$710.4K |
| JANE STREET GROUP, LLC | $9.0M | 77,353 | 0.00% | 31q | +507.2%+$7.5M |
| AMERIPRISE FINANCIAL INC | $9.0M | 79,372 | 0.00% | 31q | -43.2%-$6.9M |
| Jump Financial, LLC | $8.9M | 78,566 | 0.07% | 13q | +525.7%+$7.5M |
| CIBC WORLD MARKET INC. | $8.9M | 78,286 | 0.01% | 15q | +1861.1%+$8.4M |
| FLOSSBACH VON STORCH SE | $8.5M | 75,000 | 0.04% | 12q | -30.6%-$3.8M |
| RHUMBLINE ADVISERS | $8.3M | 72,725 | 0.01% | 31q | -19.2%-$2.0M |
| Swiss National Bank | $8.1M | 71,400 | 0.00% | 6q | -3.1%-$261.0K |
| Trexquant Investment LP | $7.6M | 66,681 | 0.04% | 10q | -5.3%-$419.6K |
| Alpha Omega Wealth Management LLC | $7.0M | 61,453 | 1.06% | 3q | +464.0%+$5.7M |
| STIFEL FINANCIAL CORP | $6.4M | 56,622 | 0.01% | 31q | +58.6%+$2.4M |
| SEI INVESTMENTS CO | $6.4M | 56,022 | 0.01% | 31q | +85.3%+$2.9M |
| Y-Intercept (Hong Kong) Ltd | $6.2M | 54,792 | 0.12% | 3q | +1694.1%+$5.9M |
| VAN DEN BERG MANAGEMENT I, INC | $5.9M | 52,054 | 1.25% | 4q | +65.7%+$2.3M |
| Brevan Howard Capital Management LP | $5.8M | 51,050 | 0.04% | new | NEW |
| STATE OF WISCONSIN INVESTMENT BOARD | $5.8M | 51,004 | 0.01% | 31q | +43.8%+$1.8M |
| D. E. Shaw & Co., Inc. | $5.7M | 47,977 | 0.00% | 31q | +1347.7%+$5.3M |
| California Public Employees Retirement System | $5.7M | 49,950 | 0.00% | 31q | -31.1%-$2.6M |
| First Eagle Investment Management, LLC | $5.6M | 49,577 | 0.01% | 3q | +225250.0%+$5.6M |
| Quantinno Capital Management LP | $5.4M | 47,575 | 0.01% | 8q | +1.2%+$66.4K |
| FIRST TRUST ADVISORS LP | $5.3M | 46,658 | 0.00% | 11q | +18.1%+$813.3K |
| WILSON ASSET MANAGEMENT (INTERNATIONAL) PTY LTD | $5.1M | 45,042 | 1.40% | 10q | +14.1%+$633.4K |
| MERCER GLOBAL ADVISORS INC /ADV | $5.1M | 44,886 | 0.00% | 8q | +40.5%+$1.5M |
| Mariner, LLC | $5.1M | 44,790 | 0.01% | 16q | -43.4%-$3.9M |
| Cerity Partners LLC | $5.0M | 44,382 | 0.01% | 10q | -47.2%-$4.5M |
| AMERICAN CENTURY COMPANIES INC | $5.0M | 44,363 | 0.00% | 31q | +174.0%+$3.2M |
| Louisiana State Employees Retirement System | $4.5M | 32,100 | 0.04% | 31q | +94.5%+$2.2M |
| ROYAL BANK OF CANADA | $4.5M | 39,121 | 0.00% | 31q | +26.5%+$937.3K |
| DF DENT & CO INC | $4.5M | 39,303 | 0.08% | 5q | -4.1%-$192.6K |
| MARSHALL WACE, LLP | $4.4M | 39,090 | 0.00% | new | NEW |
| Holocene Advisors, LP | $4.3M | 38,269 | 0.01% | 6q | -12.6%-$627.6K |
| Prana Capital Management, LP | $4.3M | 37,877 | 0.13% | 10q | +19.9%+$713.2K |
| Corebridge Financial, Inc. | $4.2M | 38,650 | 100.00% | new | NEW |
| FJ Capital Management LLC | $4.2M | 37,237 | 0.55% | new | NEW |
| Taylor Hoffman Capital Management LLC | $4.1M | 35,895 | 0.99% | 4q | +24.4%+$798.1K |
| BNP PARIBAS FINANCIAL MARKETS | $4.0M | 35,288 | 0.00% | 31q | -88.9%-$32.2M |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | $3.9M | 34,407 | 0.01% | 31q | -1.8%-$71.5K |
| READYSTATE ASSET MANAGEMENT LP | $3.8M | 33,794 | 0.13% | 3q | +35.5%+$1.0M |
| HSBC HOLDINGS PLC | $3.8M | 33,576 | 0.00% | 31q | +59.8%+$1.4M |
| VANGUARD ASSET MANAGEMENT, Ltd | $3.8M | 33,563 | 0.00% | 2q | HELD |
| Squarepoint Ops LLC | $3.7M | 32,462 | 0.00% | 14q | +104.7%+$1.9M |
| PRUDENTIAL FINANCIAL INC | $3.7M | 32,341 | 0.00% | 34q | -4.2%-$159.2K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G/A | North Reef Capital Management LPwith 2 co-filers | 9.6% |
| 2026-08-13 | 13G/A | AQR Capital Management, LLCwith 1 co-filers | 5.6% |
| 2026-08-06 | 13G/A | PRIMECAP MANAGEMENT CO/CA/ | 9.9% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 368 | $4.8B | 39,488,531 | 50 | 121 | 152 | 5.7% |
| Q1 2026 | 418 | $6.1B | 36,491,476 | 51 | 167 | 126 | 0.8% |
| Q4 2025 | 451 | $6.3B | 34,386,946 | 100 | 132 | 161 | 0.9% |
| Q3 2025 | 412 | $5.8B | 32,363,333 | 58 | 145 | 164 | 3.7% |
| Q2 2025 | 481 | $7.3B | 32,424,336 | 73 | 206 | 132 | 1.0% |
| Q1 2025 | 457 | $7.0B | 32,315,434 | 71 | 172 | 154 | 0.8% |
| Q4 2024 | 456 | $7.5B | 32,844,238 | 59 | 177 | 139 | 0.8% |
| Q3 2024 | 451 | $8.3B | 32,309,784 | 75 | 136 | 173 | 0.5% |
| Q2 2024 | 413 | $6.6B | 32,981,304 | 45 | 147 | 143 | 0.6% |
| Q1 2024 | 410 | $7.4B | 33,621,077 | 55 | 131 | 148 | 0.6% |
| Q4 2023 | 444 | $9.7B | 33,155,485 | 61 | 155 | 145 | 0.5% |
| Q3 2023 | 420 | $7.2B | 33,561,376 | 36 | 154 | 153 | 0.9% |
| Q2 2023 | 426 | $9.0B | 34,120,677 | 47 | 140 | 156 | 0.4% |
| Q1 2023 | 436 | $13.1B | 33,343,528 | 71 | 144 | 139 | 0.7% |
| Q4 2022 | 378 | $8.6B | 30,809,099 | 61 | 130 | 116 | 0.4% |
| Q3 2022 | 470 | $8.3B | 36,820,689 | 41 | 167 | 178 | 0.9% |
| Q2 2022 | 500 | $9.4B | 36,368,150 | 60 | 195 | 165 | 0.8% |
| Q1 2022 | 504 | $12.5B | 36,448,906 | 72 | 188 | 164 | 1.0% |
| Q4 2021 | 506 | $15.3B | 36,688,897 | 58 | 167 | 181 | 1.4% |
| Q3 2021 | 508 | $15.4B | 36,494,649 | 27 | 177 | 189 | 0.7% |
| Q2 2021 | 550 | $16.8B | 36,228,554 | 41 | 183 | 213 | 0.5% |
| Q1 2021 | 589 | $17.9B | 35,711,294 | 50 | 198 | 220 | 0.5% |
| Q4 2020 | 603 | $20.5B | 35,433,580 | 71 | 198 | 203 | 0.7% |
| Q3 2020 | 559 | $16.9B | 34,894,900 | 56 | 200 | 200 | 0.7% |
| Q2 2020 | 566 | $17.7B | 35,171,891 | 121 | 192 | 181 | 0.7% |
| Q1 2020 | 486 | $12.1B | 36,061,149 | 65 | 162 | 172 | 0.7% |
| Q4 2019 | 506 | $14.4B | 37,550,159 | 54 | 181 | 153 | 1.0% |
| Q3 2019 | 464 | $12.2B | 36,869,037 | 80 | 152 | 163 | 1.3% |
| Q2 2019 | 420 | $12.4B | 38,215,696 | 107 | 120 | 134 | 1.3% |
| Q1 2019 | 345 | $9.6B | 38,852,967 | 41 | 115 | 105 | 0.2% |
| Q4 2018 | 350 | $8.2B | 38,516,572 | 6 | 6 | 5 | 0.2% |