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Biogen Inc.

BIIB | NASDAQ
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$218.44
+$2.94 (+1.36%)
Sep 21, 2026, 11:16 AM ET · Market open

Institutional Ownership

Net Outflow
Dollar & Volume Weighted
Total Institutions
1,059
Total Ownership
91.69%
Capital Flow
-$150.86M
Shares Change
-4.75M
Ownership Distribution
Institutions (91.69%)
Others (8.31%)

Institutional Sentiment

Overall: neutral
Equity Sentiment & Activity
bullish
New Positions
136
Increased Positions
541
Reduced Positions
291
Closed Positions
130
New (136)
Increased (541)
Reduced (291)
Closed (130)
Options Sentiment & Activity
bearish
Put/Call Ratio
1.333
Call Flow
1,294,449
Put Flow
1,725,764
Calls (43%)
Puts (57%)

Super Investors

Super Investor / Fund Ownership Portfolio Weight Shares Market Value
Patient Capital Management
0.19%
-25.29%
1.96%
283.7K
61.14M
Gotham Asset Management LLC
0.19%
-6.21%
0.14%
279.9K
60.32M
Hillman Capital Management Inc.
0.02%
-18.78%
3.60%
23.99K
5.17M

Top Shareholders

Institution Ownership Portfolio Weight Shares Market Value
Blackrock, Inc.
10.85%
+7.49%
0.05%
+16.14%
15.97M
+7.85%
2.93B
+12.35%
Primecap Management Co/ca/
10.03%
-0.34%
2.13%
+8.35%
14.76M
0.00%
2.71B
+4.17%
FMR LLC
8.70%
+35.42%
0.12%
+46.23%
12.81M
+35.88%
2.35B
+41.54%
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