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Sio Capital Management’s Alector ALEC Stock Holding History

Sio Capital Management’s Portfolio ALEC Stock Details ALEC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-845,531
Closed -$1.18M – 52
2025
Q2 		$1.18M Buy
845,531
+8,372
+1% +$10.5K 0.45% 38
2025
Q1 		$1.03M Buy
837,159
+221,531
+36% +$361K 0.31% 40
2024
Q4 		$1.16M Buy
+615,628
New +$2.32M 0.33% 36

Other funds holding ALEC

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
MC
Merck & Co Kenilworth, New Jersey $349M AUM 146.07% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
EP
Eversept Partners New York $1.9B AUM 121.13% 1-Year Est. Return

Sio Capital Management's ALEC Position: Q3 2025 in Review

Sio Capital Management sold out of Alector (ALEC) in Q3 2025, closing a stake of 845,531 shares — an estimated $1.18M sold.

Sio Capital Management first reported a position in ALEC in Q4 2024 and held it in 3 quarters. The position peaked at $1.18M in Q2 2025. 149 funds tracked by Wall St. Rank hold ALEC as of Q3 2025.

  • Sio Capital Management reported no remaining Alector position as of Q3 2025 after selling out during the quarter.
  • Sio Capital Management sold 845,531 Alector shares in Q3 2025, an estimated $1.18M.
  • Sio Capital Management first reported a position in Alector in Q4 2024 and held it in 3 quarters.
  • Sio Capital Management's Alector position peaked at $1.18M in Q2 2025.
  • 149 funds tracked by Wall St. Rank held Alector as of Q3 2025.

Based on Sio Capital Management's 13F filing for Q3 2025, filed 13 Nov 2025.