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Diadema Partners’s Annexon ANNX Stock Holding History

Diadema Partners’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 		$157K Sell
27,516
-105,400
-79% -$583K 0.02% 131
2026
Q1 		$736K Sell
132,916
-217,084
-62% -$1.22M 0.13% 96
2025
Q4 		$1.76M Buy
+350,000
New +$1.34M 0.3% 73

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

Diadema Partners's ANNX Position: Q2 2026 in Review

Diadema Partners reduced its Annexon (ANNX) stake by 79% in Q2 2026, selling an estimated $583K and leaving 27,516 shares worth $157K. The position accounts for 0.02% of the portfolio, ranked #131.

Diadema Partners first reported a position in ANNX in Q4 2025 and has held it in 3 quarters since. The position peaked at $1.76M in Q4 2025. 217 funds tracked by Wall St. Rank hold ANNX as of Q2 2026.

  • Diadema Partners held 27,516 shares of Annexon worth $157K as of Q2 2026.
  • Diadema Partners sold 105,400 Annexon shares in Q2 2026, an estimated $583K.
  • Annexon made up 0.02% of Diadema Partners's portfolio in Q2 2026, its #131 holding.
  • Diadema Partners first reported a position in Annexon in Q4 2025 and has held it in 3 quarters since.
  • Diadema Partners's Annexon position peaked at $1.76M in Q4 2025.
  • 217 funds tracked by Wall St. Rank held Annexon as of Q2 2026.

Based on Diadema Partners's 13F filing for Q2 2026, filed 14 Aug 2026.