Janus Henderson Group
ABVX

Janus Henderson Group’s Abivax ABVX Stock Holding History

Janus Henderson Group’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
Q1 		$98M Buy
878,829
+211,068
+32% +$25M 0.05% 284
2025
Q4 		$90M Buy
667,761
+313,027
+88% +$34.2M 0.04% 308
2025
Q3 		$30.1M Buy
+354,734
New +$21.7M 0.01% 522
2024
Q4 		– Sell
-410,710
Closed -$4.74M – 2524
2024
Q3 		$4.74M Sell
410,710
-764,804
-65% -$9.16M ﹤0.01% 906
2024
Q2 		$15.7M Buy
1,175,514
+323,675
+38% +$4.63M 0.01% 618
2024
Q1 		$12.1M Buy
851,839
+131,414
+18% +$1.69M 0.01% 656
2023
Q4 		$7.72M Buy
+720,425
New +$7.34M ﹤0.01% 710

Other funds holding ABVX

TCM
TCG Crossover Management Palo Alto, California $3.5B AUM 1,165.83% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
DGM
Darwin Global Management St. Helier, Jersey $3.77B AUM 307.72% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
VPC
Vestal Point Capital New York $3.58B AUM 189.12% 1-Year Est. Return
CP
Caligan Partners New York $1.5B AUM 518.95% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $1.7B AUM 340.85% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $23.8B AUM 49.45% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
HI
Helikon Investments London, United Kingdom $2.65B AUM 79.03% 1-Year Est. Return

Janus Henderson Group's ABVX Position: Q1 2026 in Review

Janus Henderson Group increased its Abivax (ABVX) stake by 32% in Q1 2026, buying an estimated $25M and bringing the position to 878,829 shares worth $98M. The position accounts for 0.05% of the portfolio, ranked #284.

Janus Henderson Group first reported a position in ABVX in Q4 2023 and has held it in 7 quarters since. 254 funds tracked by Wall St. Rank hold ABVX as of Q1 2026.

  • Janus Henderson Group held 878,829 shares of Abivax worth $98M as of Q1 2026.
  • Janus Henderson Group bought 211,068 Abivax shares in Q1 2026, an estimated $25M.
  • Abivax made up 0.05% of Janus Henderson Group's portfolio in Q1 2026, its #284 holding.
  • Janus Henderson Group first reported a position in Abivax in Q4 2023 and has held it in 7 quarters since.
  • 254 funds tracked by Wall St. Rank held Abivax as of Q1 2026.

Based on Janus Henderson Group's 13F filing for Q1 2026, filed 15 May 2026.