Jane Street
ANNX icon

Jane Street’s Annexon ANNX Stock Holding History

Jane Street’s Portfolio ANNX Stock Details ANNX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$256K Sell
46,200
-6,700
-13% -$37.7K ﹤0.01% 9580
2025
Q4 		$266K Buy
52,900
+40,800
+337% +$156K ﹤0.01% 9104
2025
Q3 		$36.9K Buy
+12,100
New +$30K ﹤0.01% 10419
2024
Q3 		– Sell
-61,200
Closed -$300K – 9524
2024
Q2 		$300K Buy
+61,200
New +$317K ﹤0.01% 7804

Other funds holding ANNX

RG
Redmile Group San Francisco, California $1.51B AUM 164.17% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BI
BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
BCLSI
Bain Capital Life Sciences Investors Boston, Massachusetts $1.11B AUM 171.34% 1-Year Est. Return
BG
Bellevue Group Kuesnacht, Switzerland $4.2B AUM 54.85% 1-Year Est. Return
MCO
MAK Capital One New York $679M AUM 29.02% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return

Jane Street's ANNX Position: Q1 2026 in Review

Jane Street reduced its Annexon (ANNX) stake by 91% in Q1 2026, selling an estimated $2.63M and leaving 47,120 shares worth $261K. The position accounts for ﹤0.01% of the portfolio, ranked #9539.

Jane Street first reported a position in ANNX in Q3 2020 and has held it in 15 quarters since. The position peaked at $2.58M in Q4 2025. 217 funds tracked by Wall St. Rank hold ANNX as of Q1 2026.

  • Jane Street held 47,120 shares of Annexon worth $261K as of Q1 2026.
  • Jane Street sold 466,716 Annexon shares in Q1 2026, an estimated $2.63M.
  • Annexon made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #9539 holding.
  • Jane Street first reported a position in Annexon in Q3 2020 and has held it in 15 quarters since.
  • Jane Street's Annexon position peaked at $2.58M in Q4 2025.
  • 217 funds tracked by Wall St. Rank held Annexon as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.