MarketAxess (MKTX)
Runs an electronic marketplace and workflow network for institutional fixed-income trading.
$163.55
vs last close+0.11 (+0.07%)
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13F · 13D/G · Form 4
| Institutions | 110.93% | 39.43M shares | |
|---|---|---|---|
| 416 holders · as of Jun 30, 2026 | |||
| Insiders | 2.50% | 887.6K shares | |
| 23 holders · as of Sep 11, 2026 | |||
| Adds to | 113.43% | ||
35.54M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
These groups come from separate filings that can overlap, so they add to 113.43%; nothing is left for Other.
13F, as of Jun 30, 2026
416 holders · 39.43M shares · 57 new positions · 189 increased · 172 reduced · 109 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 4.00M | 11.25% | −75.3K | Aug 7, 2026 |
| Primecap Management Co/CA/ | 3.50M | 9.86% | +157.8K | Aug 14, 2026 |
| North Reef Capital Management LP | 3.40M | 9.55% | +1.52M | Aug 14, 2026 |
| Vanguard Portfolio Management LLC | 2.10M | 5.91% | −63.4K | Aug 13, 2026 |
| AQR Capital Management LLC | 1.99M | 5.59% | −696.5K | Aug 14, 2026 |
| Vanguard Capital Management LLC | 1.55M | 4.35% | −62.6K | Aug 13, 2026 |
| FMR LLC | 1.40M | 3.95% | −114.4K | Aug 13, 2026 |
| State Street Corp | 1.28M | 3.61% | +912 | Aug 7, 2026 |
13D/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 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Sep 10, 2026 | William Frank Jr. Crugerdirector | Sale | 6,164 | $163.20 | 4,033 |
| Sep 10, 2026 | Scott Pintoffofficer: General Counsel and Secretary | Sale | 100 | $163.32 | 11,486 |
| 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 |
House 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 |