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Defilade Capital Management, L.P.

Position in BIIB — Biogen Inc.

CIK 2088557 EMERYVILLE, CA

Position in BIIB

as of Mar 31, 2026 · filed May 14, 2026
Position Value
$17,652,662
-$10,856,310 QoQ
Shares Held
96,289
-40.6% QoQ
Ownership
0.065%
of shares outstanding
% of Portfolio
2.53%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2025
2 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in BIIB Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - General

Healthcare · as of Jun 30, 2026

Defilade Capital Management, L.P. holds $89,544,495 across 2 Drug Manufacturers - General names.

# Ticker Company Shares Value (USD) Open

All Filings in BIIB

Export CSV
2 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $17,652,662 96,289
2025-12-31 $28,508,972 161,992