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
2026
Q2 		$50.7K Buy
+25,208
New +$54K ﹤0.01% 5388
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 $4.16B AUM 983.43% 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 $84.2B AUM 55.88% 1-Year Est. Return
NCM
Nantahala Capital Management New Canaan, Connecticut $3.01B AUM 119.46% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
KCM
Kynam Capital Management Princeton, New Jersey $1.81B AUM 192.15% 1-Year Est. Return
MC
Merck & Co Rahway, New Jersey $526M AUM 175.27% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $80.2B AUM 51.53% 1-Year Est. Return
6CM
683 Capital Management New York $2.04B AUM 94.26% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

Group One Trading's ALEC Position: Q2 2026 in Review

Group One Trading opened a new position in Alector (ALEC) in Q2 2026: 25,208 shares worth $50.7K. The stake represents ﹤0.01% of the portfolio and ranks #5388 among its holdings. This is a return to the name: Group One Trading previously reported a position in ALEC as recently as Q3 2025.

Group One Trading first reported a position in ALEC in Q3 2020 and has held it in 13 quarters since. The position peaked at $883K in Q1 2022. 140 funds tracked by Wall St. Rank hold ALEC as of Q2 2026.

  • Group One Trading held 25,208 shares of Alector worth $50.7K as of Q2 2026.
  • Alector was a new Group One Trading position in Q2 2026.
  • Alector made up ﹤0.01% of Group One Trading's portfolio in Q2 2026, its #5388 holding.
  • Group One Trading first reported a position in Alector in Q3 2020 and has held it in 13 quarters since.
  • Group One Trading's Alector position peaked at $883K in Q1 2022.
  • 140 funds tracked by Wall St. Rank held Alector as of Q2 2026.

Based on Group One Trading's 13F filing for Q2 2026, filed 14 Aug 2026.