MarketAxess Holdings Inc (MKTX)
Financial Services
Capital Markets
162.30 $
-0.3%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns MarketAxess Holdings Inc (MKTX)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 86.5% of the shares are freely tradable; institutional investors hold 112.1%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
112.1%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
0.9%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
86.5%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
7.5%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
36Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 11.47 | 4,075,154 | +8.8 | 03/31/2026 |
| Vanguard Group Inc | 10.80 | 3,839,889 | -0.4 | 12/31/2025 |
| PRIMECAP Management Company | 9.42 | 3,347,125 | +5.4 | 03/31/2026 |
| AQR Capital Management LLC | 7.55 | 2,683,745 | +4.9 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 6.09 | 2,163,671 | +0.0 | 03/31/2026 |
| North Reef Capital Management LP | 5.28 | 1,875,000 | +16.5 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.53 | 1,609,259 | +0.0 | 03/31/2026 |
| FMR Inc | 4.28 | 1,519,421 | -24.2 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 6.36 | 2,258,532 | +0.0 | 05/29/2026 |
| Vanguard Capital Opportunity Inv | 5.16 | 1,833,050 | +4.7 | 03/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.