XT
ANNX icon

XTX Topco’s Annexon ANNX Stock Holding History

XTX Topco’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
Q2 		$640K Buy
112,147
+31,652
+39% +$175K 0.01% 2216
2026
Q1 		$446K Sell
80,495
-162,818
-67% -$917K 0.01% 2142
2025
Q4 		$1.22M Buy
243,313
+95,473
+65% +$365K 0.03% 884
2025
Q3 		$451K Buy
+147,840
New +$367K 0.02% 1151
2025
Q2 		– Sell
-58,130
Closed -$112K – 2318
2025
Q1 		$112K Buy
58,130
+22,979
+65% +$76.5K 0.01% 1843
2024
Q4 		$180K Buy
+35,151
New +$216K 0.01% 1591
2022
Q2 		– Sell
-36,742
Closed -$100K – 834
2022
Q1 		$100K Buy
+36,742
New +$226K 0.04% 517

Other funds holding ANNX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RG
Redmile Group San Francisco, California $1.49B AUM 208.7% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
BI
BVF Inc San Francisco, California $3.91B AUM 304.52% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
MCO
MAK Capital One New York $714M AUM 68.07% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $4.94B AUM 244.43% 1-Year Est. Return

XTX Topco's ANNX Position: Q2 2026 in Review

XTX Topco increased its Annexon (ANNX) stake by 39% in Q2 2026, buying an estimated $175K and bringing the position to 112,147 shares worth $640K. The position accounts for 0.01% of the portfolio, ranked #2216.

XTX Topco first reported a position in ANNX in Q1 2022 and has held it in 7 quarters since. The position peaked at $1.22M in Q4 2025. 216 funds tracked by Wall St. Rank hold ANNX as of Q2 2026.

  • XTX Topco held 112,147 shares of Annexon worth $640K as of Q2 2026.
  • XTX Topco bought 31,652 Annexon shares in Q2 2026, an estimated $175K.
  • Annexon made up 0.01% of XTX Topco's portfolio in Q2 2026, its #2216 holding.
  • XTX Topco first reported a position in Annexon in Q1 2022 and has held it in 7 quarters since.
  • XTX Topco's Annexon position peaked at $1.22M in Q4 2025.
  • 216 funds tracked by Wall St. Rank held Annexon as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.