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Sphera Funds Management’s Annexon ANNX Stock Holding History

Sphera Funds Management’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 		– Sell
-1,316,212
Closed -$6.61M – 98
2025
Q4 		$6.61M Sell
1,316,212
-478,175
-27% -$1.83M 1.28% 27
2025
Q3 		$5.47M Buy
1,794,387
+30,000
+2% +$74.5K 1.15% 25
2025
Q2 		$4.23M Hold
1,764,387
– – 0.99% 35
2025
Q1 		$3.41M Buy
1,764,387
+521,348
+42% +$1.74M 0.78% 39
2024
Q4 		$6.38M Buy
+1,243,039
New +$7.65M 1.15% 29
2023
Q2 		– Sell
-250,000
Closed -$963K – 89
2023
Q1 		$963K Buy
+250,000
New +$1.38M 0.16% 70
2022
Q1 		– Sell
-123,637
Closed -$1.42M – 70
2021
Q4 		$1.42M Hold
123,637
– – 0.16% 81
2021
Q3 		$2.3M Sell
123,637
-24,681
-17% -$501K 0.19% 93
2021
Q2 		$3.34M Buy
+148,318
New +$3.29M 0.23% 86

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

Sphera Funds Management's ANNX Position: Q1 2026 in Review

Sphera Funds Management sold out of Annexon (ANNX) in Q1 2026, closing a stake of 1,316,212 shares — an estimated $6.61M sold.

Sphera Funds Management first reported a position in ANNX in Q2 2021 and held it in 9 quarters. The position peaked at $6.61M in Q4 2025. 217 funds tracked by Wall St. Rank hold ANNX as of Q1 2026.

  • Sphera Funds Management reported no remaining Annexon position as of Q1 2026 after selling out during the quarter.
  • Sphera Funds Management sold 1,316,212 Annexon shares in Q1 2026, an estimated $6.61M.
  • Sphera Funds Management first reported a position in Annexon in Q2 2021 and held it in 9 quarters.
  • Sphera Funds Management's Annexon position peaked at $6.61M in Q4 2025.
  • 217 funds tracked by Wall St. Rank held Annexon as of Q1 2026.

Based on Sphera Funds Management's 13F filing for Q1 2026, filed 15 May 2026.