SL
ABVX

Siren LLC’s Abivax ABVX Stock Holding History

Siren LLC’s Portfolio ABVX Stock Details ABVX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$76.8M Buy
+576,000
New +$65.2M 1.55% 18

Other funds holding ABVX

HI
Helikon Investments London, United Kingdom $3.35B AUM 55.08% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $30.6B AUM 61.81% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
NNPTE
Nationale-Nederlanden Powszechne Towarzystwo Emerytalne Warszawa, Poland $1.83B AUM 331.52% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return
AAA
Affinity Asset Advisors New York $2.21B AUM 431.26% 1-Year Est. Return

Siren LLC's ABVX Position: Q2 2026 in Review

Siren LLC opened a new position in Abivax (ABVX) in Q2 2026: 576,000 shares worth $76.8M. The stake represents 1.55% of the portfolio and ranks #18 among its holdings.

175 funds tracked by Wall St. Rank hold ABVX as of Q2 2026.

  • Siren LLC held 576,000 shares of Abivax worth $76.8M as of Q2 2026.
  • Abivax was a new Siren LLC position in Q2 2026.
  • Abivax made up 1.55% of Siren LLC's portfolio in Q2 2026, its #18 holding.
  • 175 funds tracked by Wall St. Rank held Abivax as of Q2 2026.

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