Skip to main content

PICTON MAHONEY ASSET MANAGEMENT

Position in BIIB — Biogen Inc.

CIK 1539041 Toronto, A6

Position in BIIB

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$10,054,568
+$4,869,729 QoQ
Shares Held
46,536
+155.7% QoQ
Ownership
0.032%
of shares outstanding
% of Portfolio
0.10%
of 13F equity value
Holder Rank
#173
of 1,036 holders
Holding Since
Mar 2020
4 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in BIIB Over Time

Shares Held

Position Value (USD)

Derivatives in BIIB

reported options exposure · as of Mar 31, 2020
CallValue
$0
CallShares
0
PutValue
$10,124,160
PutShares
32,000

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Drug Manufacturers - General

Healthcare · as of Jun 30, 2026

PICTON MAHONEY ASSET MANAGEMENT holds $130,004,533 across 10 Drug Manufacturers - General names. BIIB ranks #5 (7.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
5 BIIB
Biogen Inc.
This page
46,536 $10,054,568

All Filings in BIIB

Export CSV
4 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $10,054,568 46,536
2023-06-30 $5,184,839 18,202
2023-03-31 $4,794,071 17,243
2020-03-31 $10,124,160 32,000