Jane Street
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Jane Street’s Alector ALEC Stock Holding History

Jane Street’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 		$241K Buy
120,100
+88,300
+278% +$189K ﹤0.01% 9685
2026
Q1 		$68.4K Buy
31,800
+19,200
+152% +$38.6K ﹤0.01% 10840
2025
Q4 		$19.7K Buy
+12,600
New +$22.4K ﹤0.01% 10735
2022
Q2 		– Sell
-10,700
Closed -$152K – 9564
2022
Q1 		$152K Sell
10,700
-12,100
-53% -$191K ﹤0.01% 9220
2021
Q4 		$471K Buy
22,800
+500
+2% +$11.3K ﹤0.01% 7378
2021
Q3 		$509K Buy
22,300
+2,400
+12% +$67.2K ﹤0.01% 7254
2021
Q2 		$415K Buy
19,900
+5,400
+37% +$102K ﹤0.01% 7588
2021
Q1 		$292K Buy
14,500
+3,800
+36% +$68.1K ﹤0.01% 7741
2020
Q4 		$162K Buy
+10,700
New +$133K ﹤0.01% 7048

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

Jane Street's ALEC Position: Q2 2026 in Review

Jane Street sold out of Alector (ALEC) in Q2 2026, closing a stake of 399,464 shares — an estimated $856K sold.

Jane Street first reported a position in ALEC in Q1 2020 and held it in 23 quarters. The position peaked at $2M in Q3 2021. 140 funds tracked by Wall St. Rank hold ALEC as of Q2 2026.

  • Jane Street reported no remaining Alector position as of Q2 2026 after selling out during the quarter.
  • Jane Street sold 399,464 Alector shares in Q2 2026, an estimated $856K.
  • Jane Street first reported a position in Alector in Q1 2020 and held it in 23 quarters.
  • Jane Street's Alector position peaked at $2M in Q3 2021.
  • 140 funds tracked by Wall St. Rank held Alector as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.