MarketAxess
Runs an electronic marketplace and workflow network for institutional fixed-income trading.
$162.72
After-hours close0.00 (0.00%)
At close$162.72(+0.16%)
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Breakdown13F · Form 4
Institutions 125.59%Insiders 0.93%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 35.19M · Float 34.86M · 99.1% free float
Institutions13F, as of Jun 30, 2026
414 holders · 44.20M shares · 57 new positions · 190 increased · 169 reduced · 109 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 4.00M | 11.37% | −75.3K | Aug 7, 2026 |
| Primecap Management Co/CA/ | 3.50M | 9.96% | +157.8K | Aug 14, 2026 |
| North Reef Capital Management LP | 3.40M | 9.65% | +1.52M | Aug 14, 2026 |
| Vanguard Portfolio Management LLC | 2.10M | 5.97% | −63.4K | Aug 13, 2026 |
| AQR Capital Management LLC | 1.99M | 5.65% | −696.5K | Aug 14, 2026 |
| Vanguard Capital Management LLC | 1.55M | 4.39% | −62.6K | Aug 13, 2026 |
| FMR LLC | 1.40M | 3.99% | −114.4K | Aug 13, 2026 |
| State Street Corp | 1.28M | 3.64% | +912 | Aug 7, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 10.90% | 4.03M | 13G | Feb 6, 2026 ↗ |
| Primecap Management Co/CA/ | 8.54% | 3.18M | 13G | Feb 11, 2026 ↗ |
| AQR Capital Management, LLC | 6.88% | 2.56M | 13G | Feb 13, 2026 ↗ |
| Vanguard Portfolio Management | 6.09% | 2.17M | 13G | Apr 29, 2026 ↗ |
| Vanguard Capital Management | 5.32% | 1.89M | 13G | Apr 30, 2026 ↗ |
| North Reef Capital Management LP | 5.27% | 1.88M | 13G | May 15, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Kevin M. McPherson | officer: Chief Revenue Officer | 68.2K | 0.19% | Feb 17, 2026 |
| Christopher R. Concannon | director, officer: Chief Executive Officer | 53.6K | 0.15% | Apr 6, 2026 |
| Stephen P. Casper | director | 53.2K | 0.15% | Sep 9, 2025 |
| Dean Berry | officer: Group COO & CEO, EMEA & APAC | 26.0K | 0.07% | Oct 2, 2025 |
| Carlos Mauricio Hernandez | director | 25.6K | 0.07% | Jun 18, 2026 |
| Steven L. Begleiter | director | 12.1K | 0.03% | Jun 12, 2026 |
| Scott Pintoff | officer: General Counsel and Secretary | 11.6K | 0.03% | Aug 10, 2026 |
| Naineshkumar Shantilal Panchal | officer: Chief Information Officer | 11.3K | 0.03% | Mar 2, 2026 |
| William Frank Jr. Cruger | director | 10.2K | 0.03% | Jun 12, 2026 |
| Jane Chwick | director | 9.2K | 0.03% | Aug 7, 2026 |
2 ten-percent owners hold 13.7K shares by Form 4, outside the officers-and-directors figure above · 22 people have not refiled in the last 18 months (1.30M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 10, 2026 | Scott Pintoffofficer: General Counsel and Secretary | Sale | 100 | $162.60 | 11,586 |
| Jul 10, 2026 | Scott Pintoffofficer: General Counsel and Secretary | Sale | 100 | $115.12 | 11,686 |
| Jun 10, 2026 | Scott Pintoffofficer: General Counsel and Secretary | Sale | 100 | $116.03 | 11,786 |
| May 11, 2026 | Scott Pintoffofficer: General Counsel and Secretary | Sale | 100 | $146.99 | 11,886 |
| Apr 10, 2026 | Scott Pintoffofficer: General Counsel and Secretary | Sale | 100 | $171.96 | 11,986 |
| Mar 10, 2026 | Scott Pintoffofficer: General Counsel and Secretary | Sale | 100 | $184.93 | 12,086 |
| Feb 10, 2026 | Scott Pintoffofficer: General Counsel and Secretary | Sale | 100 | $171.91 | 9,538 |
| Jan 12, 2026 | Scott Pintoffofficer: General Counsel and Secretary | Sale | 100 | $168.63 | 9,638 |
| Dec 12, 2025 | Scott Pintoffofficer: General Counsel and Secretary | Sale | 100 | $177.85 | 9,738 |
| Sep 12, 2025 | Kevin M. McPhersonofficer: Chief Revenue Officer | Sale | 1,494 | $185.32 | 67,681 |
CongressHouse and Senate disclosures
| Member | Type | Amount | Owner | Traded | Disclosed |
|---|---|---|---|---|---|
| Rep. Josh Gottheimer · NJ05 | Sale | $1,001 – $15,000 | Joint | Apr 9, 2026 | May 20, 2026 ↗ |