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BlackRock, Inc.
BlackRock, Inc.
BIIB7 quarters
Position history for BlackRock, Inc.'s holdings in BIOGEN IDEC INC
BlackRock, Inc. holds 16M shares of BIIB (BIOGEN IDEC INC), worth $3.5B as of 2026-Q2. The position was increased (+0.1% shares). BIIB represents 0.1% of BlackRock, Inc.'s portfolio.
Current Value
$3.5B
Current Shares
16M
Total Value Change
+$1.1B
Total Shares Change
+512,026
Quarter-by-Quarter History
Other major holders of BIIB: BNP PARIBAS FINANCIAL MARKETS, PRIMECAP MANAGEMENT CO/CA/