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
-100
Closed -$296 – 8031
2025
Q3 		$296 Hold
100
– – ﹤0.01% 8192
2025
Q2 		$140 Sell
100
-100
-50% -$125 ﹤0.01% 7769
2025
Q1 		$246 Sell
200
-9,800
-98% -$16K ﹤0.01% 7356
2024
Q4 		$18.9K Buy
+10,000
New +$37.6K ﹤0.01% 5727
2024
Q1 		– Sell
-3,200
Closed -$25.5K – 6956
2023
Q4 		$25.5K Buy
3,200
+1,800
+129% +$10.7K ﹤0.01% 5561
2023
Q3 		$9.07K Buy
+1,400
New +$9.06K ﹤0.01% 6388
2023
Q2 		– Sell
-100
Closed -$619 – 7601
2023
Q1 		$619 Hold
100
– – ﹤0.01% 6874
2022
Q4 		$923 Sell
100
-2,400
-96% -$20.9K ﹤0.01% 6850
2022
Q3 		$24K Sell
2,500
-1,200
-32% -$13K ﹤0.01% 5938
2022
Q2 		$38K Sell
3,700
-60,100
-94% -$599K ﹤0.01% 5782
2022
Q1 		$909K Buy
63,800
+60,100
+1,624% +$951K ﹤0.01% 3178
2021
Q4 		$76K Sell
3,700
-1,700
-31% -$38.3K ﹤0.01% 5965
2021
Q3 		$123K Sell
5,400
-40,200
-88% -$1.13M ﹤0.01% 5698
2021
Q2 		$950K Buy
45,600
+44,600
+4,460% +$841K ﹤0.01% 3465
2021
Q1 		$20K Buy
1,000
+500
+100% +$8.96K ﹤0.01% 6756
2020
Q4 		$8K Buy
500
+300
+150% +$3.73K ﹤0.01% 5858
2020
Q3 		$2K Buy
200
+100
+100% +$1.62K ﹤0.01% 5799
2020
Q2 		$2K Buy
+100
New +$2.76K ﹤0.01% 5537

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.