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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
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 $3.92B AUM 86.67% 1-Year Est. Return
VA
VR Adviser New York $2.68B AUM 422.73% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
GPP
Great Point Partners Greenwich, Connecticut $435M AUM 318.81% 1-Year Est. Return
B
Braidwell Stamford, Connecticut $3B AUM 46.72% 1-Year Est. Return
CC
Commodore Capital New York $1.73B AUM 298.96% 1-Year Est. Return
P
Pfizer New York $239M AUM 232.47% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return
AAA
Affinity Asset Advisors New York $1.94B AUM 374.45% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Siren LLC's ZURA Position: Q1 2026 in Review

Siren LLC increased its Zura Bio (ZURA) stake by 187% in Q1 2026, buying an estimated $14.7M and bringing the position to 3,734,866 shares worth $22.2M. The position accounts for 0.62% of the portfolio, ranked #37.

Siren LLC first reported a position in ZURA in Q4 2025 and has held it in 2 quarters since. 94 funds tracked by Wall St. Rank hold ZURA as of Q1 2026.

  • Siren LLC held 3,734,866 shares of Zura Bio worth $22.2M as of Q1 2026.
  • Siren LLC bought 2,434,866 Zura Bio shares in Q1 2026, an estimated $14.7M.
  • Zura Bio made up 0.62% of Siren LLC's portfolio in Q1 2026, its #37 holding.
  • Siren LLC first reported a position in Zura Bio in Q4 2025 and has held it in 2 quarters since.
  • 94 funds tracked by Wall St. Rank held Zura Bio as of Q1 2026.

Based on Siren LLC's 13F filing for Q1 2026, filed 14 May 2026.