MARKETAXESS HLDGS INC MKTX
COM · Common Stock · CUSIP 57060D108 · ISIN US57060D1081
American financial services company
- SectorFinancials
- IndustrySecurity Brokers, Dealers & Flotation Companies
- HeadquartersNew York, NY
- Founded2000
- Websitemarketaxess.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($18.8m this quarter). Holder counts are more reliable. Shares outstanding: 37.4m as of 2025-08-04, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $223.24. Options: 14 managers hold calls ($65.9m notional), 11 hold puts ($9.1m).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 483 |
| Q4 2022 | 500 |
| Q1 2023 | 542 |
| Q2 2023 | 515 |
| Q3 2023 | 487 |
| Q4 2023 | 508 |
| Q1 2024 | 465 |
| Q2 2024 | 470 |
| Q3 2024 | 513 |
| Q4 2024 | 521 |
| Q1 2025 | 514 |
| Q2 2025 | 532 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 220 | 263 |
| Q4 2023 | 252 | 242 |
| Q1 2024 | 217 | 279 |
| Q2 2024 | 226 | 223 |
| Q3 2024 | 238 | 236 |
| Q4 2024 | 270 | 237 |
| Q1 2025 | 275 | 260 |
| Q2 2025 | 307 | 220 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $20.4m | $19.9m | 0.98 |
| Q4 2024 | $28.7m | $31.9m | 1.11 |
| Q1 2025 | $40.6m | $19.1m | 0.47 |
| Q2 2025 | $65.9m | $9.1m | 0.14 |
Biggest buyers
| AQR CAPITAL MANAGEMENT LLC | Added | +629.0k |
| ROYAL BANK OF CANADA | Added | +353.3k |
| AMERICAN CENTURY COMPANIES INC | Added | +264.9k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Added | +161.1k |
| FMR LLC | Added | +142.2k |
| MORGAN STANLEY | Added | +110.3k |
| TUDOR INVESTMENT CORP ET AL | New | +93.2k |
| BANK OF NOVA SCOTIA | Added | +91.4k |
| Amundi | Added | +84.2k |
| PRUDENTIAL FINANCIAL INC | Added | +78.3k |
Biggest sellers
| WASATCH ADVISORS LP | Reduced | -651.5k |
| MACQUARIE GROUP LTD | Reduced | -611.5k |
| MARSHALL WACE, LLP | Sold out | -358.3k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -186.7k |
| VAN ECK ASSOCIATES CORP | Reduced | -176.3k |
| Holocene Advisors, LP | Reduced | -174.1k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -150.4k |
| BANK OF MONTREAL /CAN/ | Reduced | -123.3k |
| CITADEL ADVISORS LLC | Reduced | -123.2k |
| Balyasny Asset Management L.P. | Sold out | -108.1k |
Biggest calls
| Balyasny Asset Management L.P. | Added | $18.4m82.5k shares |
| Twin Tree Management, LP | New | $13.8m61.9k shares |
| CITADEL ADVISORS LLC | Added | $13.2m59.1k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $9.4m42.0k shares |
| Walleye Trading LLC | Added | $5.8m25.8k shares |
| SIMPLEX TRADING, LLC | Reduced | $1.6m7.1k shares |
| WOLVERINE TRADING, LLC | Added | $768.4k3.5k shares |
| Cubist Systematic Strategies, LLC | Unchanged | $558.4k2.5k shares |
| TUDOR INVESTMENT CORP ET AL | Reduced | $536.0k2.4k shares |
| Crawford Fund Management, LLC | Reduced | $536.0k2.4k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $5.3m23.6k shares |
| CITADEL ADVISORS LLC | Reduced | $1.1m5.1k shares |
| Cubist Systematic Strategies, LLC | Added | $759.4k3.4k shares |
| WOLVERINE TRADING, LLC | Reduced | $702.6k3.2k shares |
| PEAK6 LLC | New | $357.3k1.6k shares |
| TUDOR INVESTMENT CORP ET AL | Reduced | $290.3k1.3k shares |
| GROUP ONE TRADING LLC | Reduced | $290.3k1.3k shares |
| JANE STREET GROUP, LLC | Reduced | $223.3k1.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $67.0k300 shares |
| GUARDIAN CAPITAL LP | Unchanged | $19.8k7.2k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution +1.0 pts · filed 2026-02-06 | 10.9% |
| PRIMECAP MANAGEMENT CO/CA/ 13G · institution +1.3 pts · filed 2026-08-06 | 9.9% |
| North Reef Capital Management LP 13G · institution +4.3 pts · filed 2026-08-14 | 9.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 6.1% |
| AQR CAPITAL MANAGEMENT LLC 13G · institution -1.3 pts · filed 2026-08-13 | 5.6% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.3% |
Fell to 5% or below in the last year: FMR LLC (4.2%, 2026-05-06), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC), T. Rowe Price Investment Management, Inc. (3.7%, 2025-11-14)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 1 | $1.0m | 0 | — | — |
| Q4 2023 | 0 | — | 1 | $475.2k | — |
| Q1 2024 | 0 | — | 1 | $442.5k | — |
| Q2 2024 | 0 | — | 1 | $99.7k | — |
| Q3 2024 | 0 | — | 4 | $1.0m | $216.0k |
| Q4 2024 | 0 | — | 2 | $13.6m | $72.2k |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 2 | $699.8k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-06-11 | McPherson Kevin M Chief Revenue Officer | Sold | $449.5k2.0k shares |
| 2025-05-14 | Roupie Christophe Pierre Daniel Head of EMEA and APAC | Sold | $250.2k1.2k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.02% of their portfolio | 4.4m $973.6m | Reduced -47.8k |
| BlackRock, Inc. 0.01% of their portfolio | 2.6m $591.8m | Added +44.5k |
| FMR LLC 0.03% of their portfolio | 2.3m $520.9m | Added +142.2k |
| T. Rowe Price Investment Management, Inc. 0.33% of their portfolio | 2.3m $520.8m | Added +9.0k |
| VAN ECK ASSOCIATES CORP 0.46% of their portfolio | 1.8m $408.6m | Reduced -176.3k |
| STATE STREET CORP 0.01% of their portfolio | 1.5m $342.3m | Added +67.3k |
| GUARDCAP ASSET MANAGEMENT Ltd 6.57% of their portfolio | 1.5m $334.6m | Reduced -24.6k |
| PRIMECAP MANAGEMENT CO/CA/ 0.24% of their portfolio | 1.3m $299.1m | Reduced -22.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.02% of their portfolio | 1.1m $254.5m | Added +6.4k |
| Invesco Ltd. 0.03% of their portfolio | 853.2k $190.6m | Reduced -51.0k |
| AQR CAPITAL MANAGEMENT LLC 0.14% of their portfolio | 758.5k $167.2m | Added +629.0k |
| Findlay Park Partners LLP 1.51% of their portfolio | 656.3k $146.6m | Reduced -23.7k |
| NORGES BANK 0.01% of their portfolio | 513.1k $114.6m | Added +5.7k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 511.4k $114.2m | Added +40.7k |
| AMERICAN CENTURY COMPANIES INC 0.06% of their portfolio | 487.2k $108.8m | Added +264.9k |
| MILLENNIUM MANAGEMENT LLC 0.09% of their portfolio | 432.2k $96.5m | Reduced -186.7k |
| MORGAN STANLEY 0.01% of their portfolio | 424.8k $94.9m | Added +110.3k |
| North Reef Capital Management LP 4.16% of their portfolio | 420.0k $93.8m | Added +60.0k |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 419.0k $93.6m | Reduced -26.2k |
| Burgundy Asset Management Ltd. 0.90% of their portfolio | 414.4k $92.5m | Added +11.9k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 393.2k $87.8m | Added +353.3k |
| Bank of New York Mellon Corp 0.02% of their portfolio | 376.0k $84.0m | Reduced -13.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 366.5k $81.8m | Reduced -6.0k |
| CITADEL ADVISORS LLC 0.07% of their portfolio | 351.2k $78.4m | Reduced -123.2k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 305.6k $68.2m | Added +1.2k |
| CONGRESS ASSET MANAGEMENT CO 0.44% of their portfolio | 286.3k $63.9m | Reduced -55.5k |
| TWO SIGMA INVESTMENTS, LP 0.11% of their portfolio | 280.1k $62.6m | Reduced -150.4k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 259.8k $58.0m | Added +29.2k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.04% of their portfolio | 250.0k $55.8m | Added +161.1k |
| TWO SIGMA ADVISERS, LP 0.11% of their portfolio | 243.4k $54.4m | Reduced -86.0k |
| Baird Financial Group, Inc. 0.09% of their portfolio | 226.3k $50.5m | Reduced -2.6k |
| Amundi 0.02% of their portfolio | 221.8k $48.6m | Added +84.2k |
| NFJ INVESTMENT GROUP, LLC 1.64% of their portfolio | 211.1k $47.1m | Reduced -18.7k |
| UBS Group AG 0.01% of their portfolio | 202.5k $45.2m | Reduced -60.3k |
| Walleye Capital LLC 0.40% of their portfolio | 195.3k $43.6m | Added +35.3k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 194.5k $43.4m | Reduced -6.6k |
| RENAISSANCE TECHNOLOGIES LLC 0.06% of their portfolio | 190.6k $42.6m | Added +61.1k |
| BAILLIE GIFFORD & CO 0.03% of their portfolio | 186.7k $41.7m | Reduced -34.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 184.2k $41.1m | Added +43.1k |
| TD Asset Management Inc 0.03% of their portfolio | 175.4k $39.2m | Reduced -9.5k |
| Assenagon Asset Management S.A. 0.06% of their portfolio | 173.9k $38.8m | Reduced -12.7k |
| D. E. Shaw & Co., Inc. 0.04% of their portfolio | 168.9k $37.7m | Added +56.4k |
| Nuveen, LLC 0.01% of their portfolio | 159.2k $35.5m | Added +35.4k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 154.2k $34.4m | Reduced -20.1k |
| GW&K Investment Management, LLC 0.29% of their portfolio | 144.0k $32.2m | Added +1.6k |
| BARCLAYS PLC 0.01% of their portfolio | 140.1k $31.3m | Added +11.0k |
| JANUS HENDERSON GROUP PLC 0.01% of their portfolio | 136.0k $30.4m | Added +20.4k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 126.3k $28.2m | Reduced -7.4k |
| California Public Employees Retirement System 0.02% of their portfolio | 120.6k $26.9m | Added +57.2k |
| Connor, Clark & Lunn Investment Management Ltd. 0.09% of their portfolio | 118.2k $26.4m | Added +17.0k |
| Savant Capital, LLC 0.19% of their portfolio | 116.3k $26.0m | Added +272 |
| RDST Capital LLC 2.43% of their portfolio | 109.0k $24.3m | Added +74.8k |
| BANK OF NOVA SCOTIA 0.05% of their portfolio | 108.5k $24.2m | Added +91.4k |
| PRUDENTIAL FINANCIAL INC 0.03% of their portfolio | 98.3k $21.9m | Added +78.3k |
| JANE STREET GROUP, LLC 0.03% of their portfolio | 96.8k $21.6m | Added +2.3k |
| TUDOR INVESTMENT CORP ET AL 0.16% of their portfolio | 93.2k $20.8m | New |
| Man Group plc 0.04% of their portfolio | 90.7k $20.3m | Added +45.9k |
| Qube Research & Technologies Ltd 0.03% of their portfolio | 89.8k $20.1m | Added +65.3k |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 85.4k $19.1m | Added +4.1k |
| WESTWOOD HOLDINGS GROUP INC 0.13% of their portfolio | 83.5k $18.6m | Reduced -4.1k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.02% of their portfolio | 83.0k $18.5m | Reduced -28.9k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.02% of their portfolio | 81.3k $18.2m | Added +29.6k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 77.0k $17.2m | Added +2.5k |
| Legal & General Group Plc 0.00% of their portfolio | 76.8k $17.2m | Added +9.5k |
| Holocene Advisors, LP 0.04% of their portfolio | 76.6k $17.1m | Reduced -174.1k |
| Robeco Institutional Asset Management B.V. 0.03% of their portfolio | 75.0k $16.8m | Added +15.7k |
| Goodman Financial Corp 3.30% of their portfolio | 73.4k $16.4m | Added +610 |
| Swiss National Bank 0.01% of their portfolio | 72.0k $16.1m | Reduced -1.1k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.06% of their portfolio | 69.0k $15.4m | Added +49.5k |
| SEI INVESTMENTS CO 0.02% of their portfolio | 63.2k $14.1m | Reduced -64.5k |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 0.05% of their portfolio | 63.1k $14.1m | Reduced -67 |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 61.7k $13.8m | Added +3.5k |
| IEQ CAPITAL, LLC 0.08% of their portfolio | 61.6k $13.8m | Added +50.0k |
| Verition Fund Management LLC 0.08% of their portfolio | 61.5k $13.7m | Added +47.8k |
| WILSON ASSET MANAGEMENT (INTERNATIONAL) PTY LTD 3.32% of their portfolio | 60.5k $13.5m | Unchanged |
| NATIXIS 0.07% of their portfolio | 59.8k $13.3m | Added +45.7k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 59.5k $13.3m | Added +74 |
| HSBC HOLDINGS PLC 0.01% of their portfolio | 58.5k $13.0m | Reduced -22.6k |
| Cubist Systematic Strategies, LLC 0.14% of their portfolio | 58.0k $13.0m | New |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.05% of their portfolio | 56.4k $12.6m | Reduced -2.8k |
| Point72 Asset Management, L.P. 0.03% of their portfolio | 55.5k $12.4m | New |
| HRT FINANCIAL LP 0.07% of their portfolio | 55.3k $12.4m | Added +11.3k |
| CAPITAL FUND MANAGEMENT S.A. 0.13% of their portfolio | 53.4k $11.9m | Added +36.4k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 51.6k $11.5m | Added +7.8k |
| Candriam S.C.A. 0.06% of their portfolio | 50.0k $11.2m | New |
| Trexquant Investment LP 0.12% of their portfolio | 49.4k $11.0m | Added +27.3k |
| CITIGROUP INC 0.01% of their portfolio | 48.2k $10.8m | Reduced -1.7k |
| ALPS ADVISORS INC 0.06% of their portfolio | 46.7k $10.4m | Reduced -330 |
| DF DENT & CO INC 0.13% of their portfolio | 46.1k $10.3m | New |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.20% of their portfolio | 45.2k $10.1m | Reduced -32 |
| Engineers Gate Manager LP 0.13% of their portfolio | 45.2k $10.1m | Added +24.4k |
| Kingsview Wealth Management, LLC 0.16% of their portfolio | 41.4k $9.2m | Reduced -985 |
| ALGERT GLOBAL LLC 0.19% of their portfolio | 40.5k $9.0m | Added +2.4k |
| OSSIAM 0.10% of their portfolio | 40.0k $8.9m | Reduced -58.0k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.02% of their portfolio | 40.0k $8.9m | Added +5.0k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.01% of their portfolio | 39.1k $8.7m | Added +1.7k |
| Sone Capital Management, LLC 0.80% of their portfolio | 38.6k $8.6m | Reduced -42.3k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 38.1k $8.5m | Reduced -482 |
| ICICI Prudential Asset Management Co Ltd 1.05% of their portfolio | 37.9k $8.5m | Unchanged |
| Bahl & Gaynor LLC 0.04% of their portfolio | 37.7k $8.4m | Reduced -2.4k |