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Siren, L.L.C.

Position in SYRE — Spyre Therapeutics, Inc.

CIK 2005245 New York, NY

Position in SYRE

as of Mar 31, 2026 · filed May 14, 2026
Position Value
$41,290,083
+$14,472,813 QoQ
Shares Held
818,598
0.0% QoQ
Ownership
0.943%
of shares outstanding
% of Portfolio
1.14%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2024
6 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in SYRE Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

Siren, L.L.C. holds $3,359,319,188 across 68 Biotechnology names. SYRE ranks #24 (1.2% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in SYRE

Export CSV
6 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $41,290,083 818,598
2025-12-31 $26,817,270 818,598
2025-09-30 $6,177,702 368,598
2025-06-30 $5,517,912 368,598
2025-03-31 $5,947,328 368,598
2024-12-31 $8,706,720 374,000