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 		$242K Buy
43,600
+8,400
+24% +$47.3K ﹤0.01% 10984
2025
Q4 		$177K Buy
35,200
+18,800
+115% +$71.9K ﹤0.01% 11143
2025
Q3 		$50K Sell
16,400
-19,600
-54% -$48.7K ﹤0.01% 12213
2025
Q2 		$86.4K Sell
36,000
-16,100
-31% -$32.3K ﹤0.01% 11438
2025
Q1 		$101K Sell
52,100
-36,400
-41% -$121K ﹤0.01% 11458
2024
Q4 		$454K Buy
88,500
+43,000
+95% +$265K ﹤0.01% 8773
2024
Q3 		$269K Sell
45,500
-73,600
-62% -$436K ﹤0.01% 9548
2024
Q2 		$584K Buy
119,100
+63,300
+113% +$327K ﹤0.01% 7739
2024
Q1 		$400K Buy
55,800
+51,400
+1,168% +$267K ﹤0.01% 8863
2023
Q4 		$20K Buy
4,400
+3,900
+780% +$9.65K ﹤0.01% 12618
2023
Q3 		$1.18K Sell
500
-10,500
-95% -$31.8K ﹤0.01% 13911
2023
Q2 		$38.7K Sell
11,000
-4,000
-27% -$17.5K ﹤0.01% 12093
2023
Q1 		$57.8K Sell
15,000
-25,800
-63% -$142K ﹤0.01% 11976
2022
Q4 		$211K Sell
40,800
-6,000
-13% -$33K ﹤0.01% 10033
2022
Q3 		$289K Sell
46,800
-3,900
-8% -$21.1K ﹤0.01% 9659
2022
Q2 		$191K Buy
+50,700
New +$155K ﹤0.01% 10744

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.