SEI Investments
ANNX icon

SEI Investments’s Annexon ANNX Stock Holding History

SEI Investments’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 		$1.05M Sell
183,817
-19,419
-10% -$107K ﹤0.01% 2273
2026
Q1 		$1.13M Buy
203,236
+144,977
+249% +$816K ﹤0.01% 2307
2025
Q4 		$292K Buy
+58,259
New +$223K ﹤0.01% 2757
2025
Q1 		– Sell
-10,319
Closed -$52.9K – 2764
2024
Q4 		$52.9K Hold
10,319
– – ﹤0.01% 2659
2024
Q3 		$61.1K Buy
+10,319
New +$61.2K ﹤0.01% 2615

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

SEI Investments's ANNX Position: Q2 2026 in Review

SEI Investments reduced its Annexon (ANNX) stake by 9.6% in Q2 2026, selling an estimated $107K and leaving 183,817 shares worth $1.05M. The position accounts for ﹤0.01% of the portfolio, ranked #2273.

SEI Investments first reported a position in ANNX in Q3 2024 and has held it in 5 quarters since. The position peaked at $1.13M in Q1 2026. 216 funds tracked by Wall St. Rank hold ANNX as of Q2 2026.

  • SEI Investments held 183,817 shares of Annexon worth $1.05M as of Q2 2026.
  • SEI Investments sold 19,419 Annexon shares in Q2 2026, an estimated $107K.
  • Annexon made up ﹤0.01% of SEI Investments's portfolio in Q2 2026, its #2273 holding.
  • SEI Investments first reported a position in Annexon in Q3 2024 and has held it in 5 quarters since.
  • SEI Investments's Annexon position peaked at $1.13M in Q1 2026.
  • 216 funds tracked by Wall St. Rank held Annexon as of Q2 2026.

Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.