Simplex Trading
ANNX icon

Simplex Trading’s Annexon ANNX Stock Holding History

Simplex Trading’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
Q3 		$184K Sell
43,600
-70,300
-62% -$353K ﹤0.01% 4709
2026
Q2 		$650K Buy
113,900
+88,000
+340% +$486K ﹤0.01% 3287
2026
Q1 		$143K Buy
25,900
+5,000
+24% +$28.1K ﹤0.01% 4678
2025
Q4 		$105K Buy
20,900
+20,500
+5,125% +$78.4K ﹤0.01% 4946
2025
Q3 		$1K Sell
400
-100
-20% -$248 ﹤0.01% 8761
2025
Q2 		$1K Sell
500
-300
-38% -$601 ﹤0.01% 8252
2025
Q1 		$1K Sell
800
-14,900
-95% -$49.6K ﹤0.01% 8135
2024
Q4 		$80K Sell
15,700
-35,700
-69% -$220K ﹤0.01% 5390
2024
Q3 		$304K Sell
51,400
-477,200
-90% -$2.83M ﹤0.01% 4113
2024
Q2 		$2.59M Buy
528,600
+480,600
+1,001% +$2.49M ﹤0.01% 1969
2024
Q1 		$344K Buy
48,000
+43,800
+1,043% +$227K ﹤0.01% 4235
2023
Q4 		$19K Buy
+4,200
New +$10.4K ﹤0.01% 6952
2023
Q3 		– Sell
-61,400
Closed -$216K – 8580
2023
Q2 		$216K Buy
61,400
+36,400
+146% +$159K ﹤0.01% 4214
2023
Q1 		$96K Sell
25,000
-150,900
-86% -$830K ﹤0.01% 5191
2022
Q4 		$909K Hold
175,900
– – ﹤0.01% 2555
2022
Q3 		$1.09M Sell
175,900
-11,600
-6% -$62.7K ﹤0.01% 2556
2022
Q2 		$706K Buy
+187,500
New +$573K ﹤0.01% 3025
2022
Q1 		– Sell
-100
Closed -$1K – 10302
2021
Q4 		$1K Buy
+100
New +$1.62K ﹤0.01% 10130

Other funds holding ANNX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $4.23B AUM 121.47% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $420B AUM 34.97% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Candriam SCA
Candriam SCA Strassen, Luxembourg, Luxembourg $22.5B AUM 50.38% 1-Year Est. Return
Y-Intercept (HK)
Y-Intercept (HK) Hong Kong $4.52B AUM 6.6% 1-Year Est. Return
Panagora Asset Management
Panagora Asset Management Boston, Massachusetts $33.2B AUM 43.67% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return

Simplex Trading's ANNX Position: Q3 2026 in Review

Simplex Trading opened a new position in Annexon (ANNX) in Q3 2026: 81,084 shares worth $343K. The stake represents ﹤0.01% of the portfolio and ranks #4015 among its holdings. This is a return to the name: Simplex Trading previously reported a position in ANNX as recently as Q4 2025.

Simplex Trading first reported a position in ANNX in Q4 2021 and has held it in 13 quarters since. The position peaked at $453K in Q1 2024. 101 funds tracked by Wall St. Rank hold ANNX as of Q3 2026.

  • Simplex Trading held 81,084 shares of Annexon worth $343K as of Q3 2026.
  • Annexon was a new Simplex Trading position in Q3 2026.
  • Annexon made up ﹤0.01% of Simplex Trading's portfolio in Q3 2026, its #4015 holding.
  • Simplex Trading first reported a position in Annexon in Q4 2021 and has held it in 13 quarters since.
  • Simplex Trading's Annexon position peaked at $453K in Q1 2024.
  • 101 funds tracked by Wall St. Rank held Annexon as of Q3 2026.

Based on Simplex Trading's 13F filing for Q3 2026, filed 4 Nov 2026.