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SUMMIT SECURITIES GROUP LLC

Broker-Dealer

Position in BIIB — Biogen Inc.

CIK 1531593 NEW YORK, NY

Position in BIIB

as of Jun 30, 2026 · filed Aug 3, 2026
Position Value
$7,346
+$2,947 QoQ
Shares Held
34
+41.7% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#928
of 1,031 holders
Holding Since
Mar 2022
14 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 Sep 30, 2024
CallValue
$0
CallShares
0
PutValue
$96,920
PutShares
500

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

SUMMIT SECURITIES GROUP LLC holds $1,674,088 across 8 Drug Manufacturers - General names. BIIB ranks #7 (0.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
7 BIIB
Biogen Inc.
This page
34 $7,346

All Filings in BIIB

Export CSV
16 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $7,346 34
2026-03-31 $4,399 24
2025-12-31 $38,541 219
2025-09-30 $6,863 49
2024-12-31 $3,670 24
2024-09-30 $96,920 500
2024-09-30 $96,920 500
2024-06-30 $4 19
2024-03-31 $172,504 800
2024-03-31 $172,504 800
2023-12-31 $235,998 912
2023-09-30 $4,112 16
2023-06-30 $13,672 48
2022-09-30 $152,457 571
2022-06-30 $203,940 1,000
2022-03-31 $139,838 664