MarketAxess — Institutional Ownership
Which tracked institutions hold MKTX, and how they changed the position last quarter. Latest holdings as of Mar 31, 2026. Source: SEC 13-F filings.
26
Funds holding
$1487681691
Total value held
Buying
21 added/new · 5 reduced
| # | Institution | Value | Shares | Δ Shares | Change (QoQ) |
|---|---|---|---|---|---|
| 1 | Blackrock, Inc. | $672318906 | 4075154 | +328682 | +8.77% |
| 2 | State Street Corp | $211315788 | 1280857 | +32543 | +2.61% |
| 3 | Bank Of Montreal /Can/ | $168371804 | 1020559 | — | NEW BUY |
| 4 | Goldman Sachs Group Inc | $83981929 | 509043 | +336445 | +194.93% |
| 5 | Morgan Stanley | $80929006 | 490537 | +65660 | +15.45% |
| 6 | Bank Of New York Mellon Corp | $47834350 | 289940 | -8788 | -2.94% |
| 7 | Bank Of America Corp /De/ | $43531294 | 263858 | +64627 | +32.44% |
| 8 | Northern Trust Corp | $38993024 | 236350 | +2044 | +0.87% |
| 9 | Principal Financial Group Inc | $29993034 | 181798 | +3725 | +2.09% |
| 10 | Janus Henderson Group Plc | $27849291 | 168797 | — | NEW BUY |
| 11 | Invesco Ltd. | $20774695 | 114619 | +38292 | +50.17% |
| 12 | Raymond James Financial Inc | $20067298 | 121635 | +8170 | +7.20% |
| 13 | Ameriprise Financial Inc | $11529662 | 69885 | -13477 | -16.17% |
| 14 | Citigroup Inc | $5690526 | 31396 | -71491 | -69.48% |
| 15 | Royal Bank Of Canada | $5102000 | 30923 | — | NEW BUY |
| 16 | Sei Investments Co | $4987327 | 30231 | — | NEW BUY |
| 17 | Bank Of Nova Scotia | $4060488 | 24612 | — | NEW BUY |
| 18 | Franklin Resources Inc | $2904143 | 17603 | +6797 | +62.90% |
| 19 | Barclays Plc | $2284476 | 13847 | — | NEW BUY |
| 20 | Fifth Third Bancorp | $1672880 | 10140 | +7894 | +351.47% |
| 21 | Toronto Dominion Bank | $997000 | 6035 | — | NEW BUY |
| 22 | Wells Fargo & Company/Mn | $959719 | 5295 | -6871 | -56.48% |
| 23 | Us Bancorp \De\ | $489661 | 2968 | -618 | -17.23% |
| 24 | Citizens Financial Group Inc/Ri | $427686 | 2592 | +153 | +6.27% |
| 25 | Pnc Financial Services Group, Inc. | $350581 | 2125 | +307 | +16.89% |
| 26 | Nomura Holdings Inc | $265123 | 1607 | — | NEW BUY |
Aggregated across tracked institutional filers. Reported quarterly on SEC Form 13-F and may lag. For research only — not investment advice.