MarketAxess Ownership | Who Owns MarketAxess?
MarketAxess Ownership Summary
MarketAxess is owned by 34.72% institutional investors, 0.86% insiders, and 64.42% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 11.07% of MKTX shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 6.40% of its assets in MarketAxess shares.
MKTX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | MarketAxess | 34.72% | 0.86% | 64.42% |
| Sector | Financial Services Stocks | 37.05% | 15.59% | 47.36% |
| Industry | Capital Markets Stocks | 33.12% | 15.10% | 51.78% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 4.08M | 11.07% | $672.32M |
| Vanguard group | 3.84M | 10.37% | $695.98M |
| Primecap management co/ca/ | 3.35M | 9.09% | $552.21M |
| Blackrock | 2.95M | 7.82% | $591.45M |
| Aqr capital management | 2.68M | 7.29% | $442.76M |
| North reef capital management lp | 1.88M | 5.09% | $309.34M |
| Fmr | 1.52M | 4.13% | $250.67M |
| State street | 1.28M | 3.48% | $211.32M |
| Van eck associates | 1.24M | 3.37% | $204.46M |
| Millennium management | 1.09M | 2.95% | $179.36M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| North reef capital management lp | 1.88M | 10.65% | $309.34M |
| Source financial advisors | 115.36K | 7.11% | $23.13M |
| Guardcap asset management | 643.37K | 6.09% | $106.35M |
| Rdst capital | 295.27K | 4.69% | $48.71M |
| Goodman financial | 83.16K | 2.36% | $13.72M |
| Sone capital management | 159.97K | 2.22% | $26.39M |
| Eubel brady & suttman asset management | 111.48K | 2.18% | $18.39M |
| Taika capital, lp | 11.89K | 2.05% | $2.69M |
| Wilson asset management () pty | 39.46K | 1.84% | $6.51M |
| Robertson opportunity capital | 28.83K | 1.83% | $4.76M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Millennium management | 1.09M | 0.07% | 785.52K |
| Norges bank | 503.86K | 0.01% | 503.86K |
| Neuberger berman group | 966.03K | 0.12% | 416.39K |
| Goldman sachs group | 509.04K | 0.01% | 336.44K |
| Blackrock funding, inc. /de | 4.08M | 0.01% | 328.68K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Citadel advisors | 82.16K | 0.00% | -543.05K |
| Guardcap asset management | 643.37K | 6.09% | -510.21K |
| Fmr | 1.52M | 0.01% | -485.20K |
| Marshall wace, llp | - | - | -358.33K |
| Congress asset management co /ma | - | - | -286.28K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 503.86K | 0.01% | 503.86K | $91.32M |
| Driehaus capital management | 239.26K | 0.29% | 239.26K | $39.47M |
| Vanguard fiduciary trust | 229.43K | 0.01% | 229.43K | $37.85M |
| Eubel brady & suttman asset management | 111.48K | 2.18% | 111.48K | $18.39M |
| Davis asset management | 108.85K | 0.52% | 108.85K | $17.96M |
Sold Out
| Holder | Change |
|---|---|
| Nelson, van denburg & campbell wealth management group | -1.00 |
| Claris advisors, llc / mo / | -1.00 |
| Westend advisors | -1.00 |
| Colonial trust advisors | -1.00 |
| Advisornet financial | -1.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 248 | -49.80% | 12,781,271 | -64.97% | 34 | 0.36% | 123 | -53.76% | 82 | -52.87% |
| Dec 31, 2025 | 335 | -27.80% | 23,348,295 | -41.93% | 63 | 0.54% | 184 | -19.65% | 115 | -36.11% |
| Sep 30, 2025 | 440 | -17.14% | 40,083,415 | 14.30% | 107 | 1.21% | 218 | -28.52% | 170 | 6.92% |
| Jun 30, 2025 | 536 | 2.49% | 36,950,853 | 0.68% | 99 | 1.03% | 310 | 8.77% | 157 | -9.77% |
| Mar 31, 2025 | 521 | - | 36,702,491 | -2.53% | 98 | 0.97% | 284 | -2.07% | 174 | 10.13% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 2.25M | 6.40% | - |
| Vanguard Capital Opportunity Inv | 1.83M | 5.21% | 81.70K |
| Vanguard Total Stock Mkt Idx Inv | 1.13M | 3.21% | 2.63K |
| Vanguard US Total Market Shares ETF | 1.14M | 3.02% | -58.38K |
| Vanguard Institutional 500 Index Trust | 1.07M | 2.86% | 6.63K |
| T. Rowe Price Mid-Cap Growth | 1.05M | 2.80% | -1.90K |
| T. Rowe Price US Mid-Cap Growth Equity | 1.05M | 2.79% | -1.20K |
| PRIMECAP Odyssey Aggressive Growth | 894.76K | 2.54% | 33.80K |
| Vanguard 500 Index Investor | 928.63K | 2.48% | -136.14K |
| VanEck Morningstar Wide Moat | 842.30K | 2.37% | -187.00 |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| May 11, 2026 | Pintoff Scott | General Counsel and Secretary | Sell | $14.70K |
| Apr 10, 2026 | Pintoff Scott | General Counsel and Secretary | Sell | $17.20K |
| Mar 10, 2026 | Pintoff Scott | General Counsel and Secretary | Sell | $18.49K |
| Feb 10, 2026 | Pintoff Scott | General Counsel and Secretary | Sell | $17.19K |
| Jan 12, 2026 | Pintoff Scott | General Counsel and Secretary | Sell | $16.86K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 2 |
| 2026 Q1 | - | 3 |
| 2025 Q4 | - | 1 |
| 2025 Q3 | - | 2 |
| 2025 Q2 | - | 2 |
MKTX Ownership FAQ
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