Group One Trading
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Group One Trading’s Alector ALEC Stock Holding History

Group One Trading’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
Q4 		– Sell
-22,321
Closed -$39.6K – 8030
2025
Q3 		$66.1K Buy
+22,321
New +$49.2K ﹤0.01% 5730
2024
Q4 		– Sell
-2,000
Closed -$7.53K – 7200
2024
Q3 		$9.32K Hold
2,000
– – ﹤0.01% 5634
2024
Q2 		$9.08K Buy
+2,000
New +$10.3K ﹤0.01% 5680
2022
Q4 		– Sell
-1,298
Closed -$11.3K – 7155
2022
Q3 		$12K Sell
1,298
-600
-32% -$6.49K ﹤0.01% 6367
2022
Q2 		$19K Sell
1,898
-60,100
-97% -$599K ﹤0.01% 6316
2022
Q1 		$883K Buy
61,998
+61,800
+31,212% +$977K ﹤0.01% 3208
2021
Q4 		$4K Sell
198
-22,500
-99% -$507K ﹤0.01% 7683
2021
Q3 		$518K Buy
22,698
+15,847
+231% +$444K ﹤0.01% 4151
2021
Q2 		$143K Buy
6,851
+4,197
+158% +$79.1K ﹤0.01% 5583
2021
Q1 		$53K Sell
2,654
-1,173
-31% -$21K ﹤0.01% 6173
2020
Q4 		$58K Buy
3,827
+1,527
+66% +$19K ﹤0.01% 4909
2020
Q3 		$24K Buy
+2,300
New +$37.2K ﹤0.01% 5041

Other funds holding ALEC

TCM
TCG Crossover Management Palo Alto, California $3.5B AUM 1,165.83% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
FCMI
Foresite Capital Management IV Larkspur, California $237M AUM 107.53% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
MC
Merck & Co Kenilworth, New Jersey $526M AUM 175.27% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
6CM
683 Capital Management New York $1.92B AUM 85.52% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return
NCM
Nantahala Capital Management New Canaan, Connecticut $2.72B AUM 121.58% 1-Year Est. Return

Group One Trading's ALEC Position: Q4 2025 in Review

Group One Trading sold out of Alector (ALEC) in Q4 2025, closing a stake of 22,321 shares — an estimated $39.6K sold.

Group One Trading first reported a position in ALEC in Q3 2020 and held it in 12 quarters. The position peaked at $883K in Q1 2022. 131 funds tracked by Wall St. Rank hold ALEC as of Q4 2025.

  • Group One Trading reported no remaining Alector position as of Q4 2025 after selling out during the quarter.
  • Group One Trading sold 22,321 Alector shares in Q4 2025, an estimated $39.6K.
  • Group One Trading first reported a position in Alector in Q3 2020 and held it in 12 quarters.
  • Group One Trading's Alector position peaked at $883K in Q1 2022.
  • 131 funds tracked by Wall St. Rank held Alector as of Q4 2025.

Based on Group One Trading's 13F filing for Q4 2025, filed 12 Feb 2026.