Citadel Advisors
ANNX icon

Citadel Advisors’s Annexon ANNX Stock Holding History

Citadel Advisors’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 		$1.35M Buy
243,600
+173,200
+246% +$975K ﹤0.01% 6968
2025
Q4 		$353K Buy
70,400
+9,200
+15% +$35.2K ﹤0.01% 9794
2025
Q3 		$187K Buy
+61,200
New +$152K ﹤0.01% 11329
2025
Q2 		– Sell
-14,700
Closed -$28.4K – 12411
2025
Q1 		$28.4K Sell
14,700
-700
-5% -$2.33K ﹤0.01% 12873
2024
Q4 		$79K Sell
15,400
-25,800
-63% -$159K ﹤0.01% 11804
2024
Q3 		$244K Sell
41,200
-202,500
-83% -$1.2M ﹤0.01% 9734
2024
Q2 		$1.19M Buy
243,700
+73,800
+43% +$382K ﹤0.01% 6254
2024
Q1 		$1.22M Buy
169,900
+158,500
+1,390% +$823K ﹤0.01% 6533
2023
Q4 		$51.8K Sell
11,400
-7,200
-39% -$17.8K ﹤0.01% 11751
2023
Q3 		$43.9K Sell
18,600
-32,200
-63% -$97.4K ﹤0.01% 11897
2023
Q2 		$179K Sell
50,800
-111,000
-69% -$485K ﹤0.01% 10062
2023
Q1 		$623K Sell
161,800
-1,000
-0.6% -$5.5K ﹤0.01% 7849
2022
Q4 		$842K Buy
162,800
+83,000
+104% +$456K ﹤0.01% 7147
2022
Q3 		$493K Buy
79,800
+31,800
+66% +$172K ﹤0.01% 8482
2022
Q2 		$181K Buy
+48,000
New +$147K ﹤0.01% 10807

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

Citadel Advisors's ANNX Position: Q1 2026 in Review

Citadel Advisors increased its Annexon (ANNX) stake by 118% in Q1 2026, buying an estimated $1.83M and bringing the position to 600,135 shares worth $3.32M. The position accounts for ﹤0.01% of the portfolio, ranked #5062.

Citadel Advisors first reported a position in ANNX in Q3 2020 and has held it in 22 quarters since. The position peaked at $63.5M in Q3 2020. 217 funds tracked by Wall St. Rank hold ANNX as of Q1 2026.

  • Citadel Advisors held 600,135 shares of Annexon worth $3.32M as of Q1 2026.
  • Citadel Advisors bought 324,841 Annexon shares in Q1 2026, an estimated $1.83M.
  • Annexon made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #5062 holding.
  • Citadel Advisors first reported a position in Annexon in Q3 2020 and has held it in 22 quarters since.
  • Citadel Advisors's Annexon position peaked at $63.5M in Q3 2020.
  • 217 funds tracked by Wall St. Rank held Annexon as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.