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Rakuten Investment Management, Inc.

Position in BIIB — Biogen Inc.

CIK 2062680 TOKYO, M0

Position in BIIB

as of Jun 30, 2026 · filed Aug 18, 2026
Position Value
$5,206,397
+$1,213,837 QoQ
Shares Held
24,097
+10.6% QoQ
Ownership
0.016%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
#236
of 1,031 holders
Holding Since
Dec 2023
9 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

Rakuten Investment Management, Inc. holds $465,441,591 across 8 Drug Manufacturers - General names. BIIB ranks #8 (1.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
8 BIIB
Biogen Inc.
This page
24,097 $5,206,397

All Filings in BIIB

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9 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $5,206,397 24,097
2026-03-31 $3,992,560 21,778
2025-12-31 $3,395,727 19,295
2025-09-30 $27,815,965 198,572
2025-03-31 $2,560,002 18,708
2024-09-30 $2,241,953 11,566
2024-06-30 $2,005,011 8,649
2024-03-31 $1,159,873 5,379
2023-12-31 $92,639 358