Biogen — Institutional Ownership
Which tracked institutions hold BIIB, and how they changed the position last quarter. Latest holdings as of Mar 31, 2026. Source: SEC 13-F filings.
41
Funds holding
$6344284185
Total value held
Buying
33 added/new · 6 reduced
| # | Institution | Value | Shares | Δ Shares | Change (QoQ) |
|---|---|---|---|---|---|
| 1 | Blackrock, Inc. | $2928623480 | 15974601 | +1163231 | +7.85% |
| 2 | State Street Corp | $1314095140 | 7167922 | +8902 | +0.12% |
| 3 | Morgan Stanley | $397998875 | 2170940 | -154073 | -6.63% |
| 4 | Invesco Ltd. | $291341046 | 1655441 | -762686 | -31.54% |
| 5 | Northern Trust Corp | $265201330 | 1446579 | +453 | +0.03% |
| 6 | Goldman Sachs Group Inc | $215869950 | 1177494 | +20028 | +1.73% |
| 7 | Bank Of America Corp /De/ | $211997128 | 1156369 | +27524 | +2.44% |
| 8 | Bank Of New York Mellon Corp | $144559974 | 788523 | -22583 | -2.78% |
| 9 | Barclays Plc | $134101125 | 731474 | — | NEW BUY |
| 10 | Citigroup Inc | $117481068 | 667544 | +371545 | +125.52% |
| 11 | Royal Bank Of Canada | $97418000 | 531377 | — | NEW BUY |
| 12 | Principal Financial Group Inc | $34293528 | 187059 | +2870 | +1.56% |
| 13 | Franklin Resources Inc | $26481653 | 144448 | +3074 | +2.17% |
| 14 | Ameriprise Financial Inc | $24310041 | 132603 | +842 | +0.64% |
| 15 | Wells Fargo & Company/Mn | $21002382 | 119338 | -56926 | -32.30% |
| 16 | Nomura Holdings Inc | $18906823 | 103130 | — | NEW BUY |
| 17 | Raymond James Financial Inc | $17727725 | 96699 | +12985 | +15.51% |
| 18 | Bank Of Montreal /Can/ | $16996342 | 92709 | — | NEW BUY |
| 19 | Sei Investments Co | $13111811 | 71513 | — | NEW BUY |
| 20 | Toronto Dominion Bank | $7951205 | 43371 | — | NEW BUY |
| 21 | Banco Bilbao Vizcaya Argentaria, S.A. | $7769987 | 42471 | — | NEW BUY |
| 22 | Pnc Financial Services Group, Inc. | $7238602 | 39484 | +766 | +1.98% |
| 23 | Fifth Third Bancorp | $5997778 | 32716 | +23504 | +255.15% |
| 24 | Us Bancorp \De\ | $5724113 | 31223 | +4466 | +16.69% |
| 25 | Bank Of Nova Scotia | $3746532 | 20436 | — | NEW BUY |
| 26 | Janus Henderson Group Plc | $3478118 | 18975 | — | NEW BUY |
| 27 | M&T Bank Corp | $2950140 | 16761 | +2106 | +14.37% |
| 28 | Truist Financial Corp | $2120457 | 11566 | +159 | +1.39% |
| 29 | Pinnacle Financial Partners, Inc. | $1819567 | 9925 | — | NEW BUY |
| 30 | Allstate Corp | $1702175 | 9672 | +4972 | +105.79% |
| 31 | Nicolet Bankshares Inc | $1196324 | 6516 | +4347 | +200.41% |
| 32 | Citizens Financial Group Inc/Ri | $430177 | 2346 | +549 | +30.55% |
| 33 | Hancock Whitney Corp | $327830 | 1735 | -5 | -0.29% |
| 34 | Regions Financial Corp | $217797 | 1188 | -49 | -3.96% |
| 35 | Itau Unibanco Holding S.A. | $63982 | 349 | — | NEW BUY |
| 36 | Atlantic Union Bankshares Corp | $20239 | 115 | — | Held |
| 37 | Amalgamated Financial Corp. | $7764 | 36865 | — | NEW BUY |
| 38 | Wealthfront Corp | $2839 | 8036 | +728 | +9.96% |
| 39 | Employers Holdings, Inc. | $642 | 2295 | — | Held |
| 40 | Peapack Gladstone Financial Corp | $310 | 1691 | +3 | +0.18% |
| 41 | Horizon Bancorp Inc /In/ | $186 | 1017 | +35 | +3.56% |
Aggregated across tracked institutional filers. Reported quarterly on SEC Form 13-F and may lag. For research only — not investment advice.