Institutional Ownership
Biogen Inc
CUSIP 09062X103COMBIIBQ1 2026
Institutional Holders
985
13F filers
Shares Held
116.50M
Aggregate institutional
Institutional Value
$20.43B
Q1 2026
Net New Holders
+11
113 new · 102 closed
Institutional Ownership Trend
Aggregate 13F value by quarter
Multi-quarter trend — upgrade to see history
UpgradePosition Activity
Q1 2026
New positions113
Increased394
Decreased287
Sold out102
Institutional Holders
985 funds hold this security · Q1 2026
| # | Fund | Shares | Value | Δ Shares | Activity |
|---|---|---|---|---|---|
| 1 | Blackrock, Inc. | 15.97M | $2.93B | +1.16M | Added |
| 2 | Primecap Management Co/Ca/ | 14.76M | $2.71B | −390 | Reduced |
| 3 | Fmr LLC | 12.81M | $2.35B | +3.38M | Added |
| 4 | State Street Corp | 7.17M | $1.31B | +8.9K | Added |
| 5 | Geode Capital Management, LLC | 4.34M | $793.39M | +143.2K | Added |
| 6 | Wellington Management Group LLP | 2.96M | $542.96M | −589.6K | Reduced |
| 7 | Morgan Stanley | 2.17M | $398.00M | −154.1K | Reduced |
| 8 | Jpmorgan Chase & Co | 2.02M | $378.14M | +158.7K | Added |
| 9 | Aqr Capital Management LLC | 1.92M | $346.24M | +394.9K | Added |
| 10 | Invesco Ltd. | 1.75M | $319.96M | +89.8K | Added |
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