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KLINGENSTEIN FIELDS & CO LP

Position in BIIB — Biogen Inc.

CIK 859872 NEW YORK, NY

Position in BIIB

as of Jun 30, 2026 · filed Aug 5, 2026
Position Value
$590,059
+$89,385 QoQ
Shares Held
2,731
0.0% QoQ
Ownership
0.002%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#548
of 1,031 holders
Holding Since
Sep 2022
16 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

KLINGENSTEIN FIELDS & CO LP holds $198,349,712 across 10 Drug Manufacturers - General names. BIIB ranks #6 (0.3% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 BIIB
Biogen Inc.
This page
2,731 $590,059

All Filings in BIIB

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16 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $590,059 2,731
2026-03-31 $500,674 2,731
2025-12-31 $480,628 2,731
2025-09-30 $382,558 2,731
2025-06-30 $342,986 2,731
2025-03-31 $373,710 2,731
2024-12-31 $417,624 2,731
2024-09-30 $572,991 2,956
2024-06-30 $708,441 3,056
2024-03-31 $675,137 3,131
2023-12-31 $813,314 3,143
2023-09-30 $807,782 3,143
2023-06-30 $519,851 1,825
2023-03-31 $436,507 1,570
2022-12-31 $434,764 1,570
2022-09-30 $419,190 1,570