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BIIBBIIB
7 quarters

Position history for FMR LLCFMR LLC's holdings in BIOGEN IDEC INC

FMR LLC holds 18.2M shares of BIIB (BIOGEN IDEC INC), worth $3.9B as of 2026-Q2. The position was increased (+42.2% shares). BIIB represents 0.2% of FMR LLC's portfolio.

Current Value

$3.9B

Current Shares

18.2M

Total Value Change

+$3.8B

Total Shares Change

+17.5M

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q2
Latest
Increased
18.2M
+42.2%
$3.9B0.2%$216.06
51
2026-Q1
Increased
12.8M
+35.9%
$2.3B0.1%$183.33
50
2025-Q4
Increased
9.4M
+632.0%
$1.7B0.1%$175.99
51
2025-Q3
Decreased
1.3M
-23.1%
$180.4M0.0%$140.08
0
2025-Q2
Increased
1.7M
+27.9%
$210.3M0.0%$125.59
38
2025-Q1
Increased
1.3M
+72.8%
$179.1M0.0%$136.84
46
2024-Q4
New
757,570
-
$115.8M0.0%$152.92
42

Other major holders of BIIB: BNP PARIBAS FINANCIAL MARKETS, PRIMECAP MANAGEMENT CO/CA/

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