Institutional Ownership
Marketaxess Hldgs Inc
CUSIP 57060D108COMMKTXQ1 2026
Institutional Holders
437
13F filers
Shares Held
34.13M
Aggregate institutional
Institutional Value
$5.32B
Q1 2026
Net New Holders
-32
53 new · 85 closed
Institutional Ownership Trend
Aggregate 13F value by quarter
Multi-quarter trend — upgrade to see history
UpgradePosition Activity
Q1 2026
New positions53
Increased180
Decreased147
Sold out85
Institutional Holders
437 funds hold this security · Q1 2026
| # | Fund | Shares | Value | Δ Shares | Activity |
|---|---|---|---|---|---|
| 1 | Blackrock, Inc. | 4.08M | $672.32M | +328.7K | Added |
| 2 | Primecap Management Co/Ca/ | 3.35M | $552.21M | +171.7K | Added |
| 3 | Aqr Capital Management LLC | 2.68M | $442.76M | +125.6K | Added |
| 4 | North Reef Capital Management LP | 1.88M | $309.34M | +265.7K | Added |
| 5 | Fmr LLC | 1.52M | $250.67M | −485.2K | Reduced |
| 6 | State Street Corp | 1.28M | $211.32M | +32.5K | Added |
| 7 | Millennium Management LLC | 1.09M | $179.36M | +785.5K | Added |
| 8 | Bank Of Montreal /Can/ | 1.02M | $168.37M | +69.5K | Added |
| 9 | Neuberger Berman Group LLC | 966.0K | $159.38M | +416.4K | Added |
| 10 | Geode Capital Management, LLC | 863.0K | $142.40M | +29.9K | Added |
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