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BIIB
BIIB
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PM
PRIMECAP Management Company
Buy
Sell
Price
Unit: Shares
Holdings History
Date
Change %
Shares Changed
% Held
Shares Held
Report Date
Latest
0.06%
-390.00
10.00%
14.76M
03/31/2026
Q1 2026
0.06%
-390.00
10.00%
14.76M
03/31/2026
Q4 2025
0.13%
-196.70K
10.06%
14.76M
12/31/2025
Q3 2025
0.59%
-847.43K
10.19%
14.95M
09/30/2025
Q2 2025
0.10%
-141.14K
10.78%
15.80M
06/30/2025
Q1 2025
0.13%
-102.95K
10.88%
15.94M
03/31/2025
Q4 2024
0.19%
-268.87K
11.01%
16.05M
12/31/2024
Q3 2024
0.02%
-23.22K
11.20%
16.32M
09/30/2024
Q2 2024
0.08%
+117.58K
11.22%
16.34M
06/30/2024
Q1 2024
0.08%
-43.77K
11.14%
16.22M
03/31/2024
Q4 2023
0.17%
+251.92K
11.22%
16.26M
12/31/2023
Q3 2023
0.02%
-13.31K
11.05%
16.01M
09/30/2023
Q2 2023
0.02%
+24.71K
11.07%
16.03M
06/30/2023
Q1 2023
0.15%
+300.59K
11.05%
16.00M
03/31/2023
