Siren LLC’s Zura Bio ZURA Stock Holding History

Siren LLC’s Portfolio ZURA Stock Details ZURA Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$22M	Hold	3,734,866	–	–	0.45%	55
2026 Q1	$22.2M	Buy	3,734,866 +2,434,866	+187%	+$14.7M	0.62%	37
2025 Q4	$6.81M	Buy	+1,300,000	New	+$5.14M	0.2%	70

Other funds holding ZURA

SCM

Suvretta Capital Management New York $5.47B AUM 131.34% 1-Year Est. Return

VR Adviser New York $3.3B AUM 525.74% 1-Year Est. Return

MPM BioImpact Boston, Massachusetts $1.64B AUM 245.64% 1-Year Est. Return

GPP

Great Point Partners Greenwich, Connecticut $529M AUM 337.4% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Braidwell Stamford, Connecticut $2.7B AUM 88.53% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Commodore Capital New York $1.68B AUM 375.52% 1-Year Est. Return

Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return

SVCM

Saturn V Capital Management Austin, Texas $697M AUM 628.57% 1-Year Est. Return

Siren LLC's ZURA Position: Q2 2026 in Review

Siren LLC held its Zura Bio (ZURA) position steady in Q2 2026 at 3,734,866 shares worth $22M. The position accounts for 0.45% of the portfolio, ranked #55.

Siren LLC first reported a position in ZURA in Q4 2025 and has held it in 3 quarters since. The position peaked at $22.2M in Q1 2026. 95 funds tracked by Wall St. Rank hold ZURA as of Q2 2026.

Siren LLC held 3,734,866 shares of Zura Bio worth $22M as of Q2 2026.
Siren LLC left its Zura Bio share count unchanged in Q2 2026.
Zura Bio made up 0.45% of Siren LLC's portfolio in Q2 2026, its #55 holding.
Siren LLC first reported a position in Zura Bio in Q4 2025 and has held it in 3 quarters since.
Siren LLC's Zura Bio position peaked at $22.2M in Q1 2026.
95 funds tracked by Wall St. Rank held Zura Bio as of Q2 2026.

Based on Siren LLC's 13F filing for Q2 2026, filed 13 Aug 2026.