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BIIB
5 quarters

Position history for FRED ALGER MANAGEMENT, LLC's holdings in BIOGEN INC

FRED ALGER MANAGEMENT, LLC holds 733,194 shares of BIIB (BIOGEN INC), worth $134.4M as of 2026-Q1. The position was decreased (-8.2% shares). BIIB represents 0.6% of FRED ALGER MANAGEMENT, LLC's portfolio.

Current Value

$134.4M

Current Shares

733,194

Total Value Change

+$132.8M

Total Shares Change

+721,035

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q1
Latest
Decreased
733,194
-8.2%
$134.4M0.6%$184.02
0
2025-Q4
Increased
798,774
+391x
$140.6M0.6%$176.40
69
2025-Q3
New
2,039
-
$285,6230.0%$138.52
32
2025-Q2
Exited
0
-100.0%
$00.0%$126.08
0
2025-Q1
New
12,159
-
$1.7M0.0%$138.37
36

Other major holders of BIIB: PRIMECAP MANAGEMENT CO/CA/

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