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XTX Topco’s Alector ALEC Stock Holding History

XTX Topco’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
Q1 		$1.2M Sell
559,896
-32,943
-6% -$66.2K 0.02% 1258
2025
Q4 		$925K Buy
592,839
+494,326
+502% +$877K 0.02% 1078
2025
Q3 		$292K Buy
98,513
+25,175
+34% +$55.5K 0.02% 1525
2025
Q2 		$103K Buy
73,338
+40,767
+125% +$51K ﹤0.01% 1879
2025
Q1 		$40.1K Sell
32,571
-18,400
-36% -$30K ﹤0.01% 2025
2024
Q4 		$96.3K Buy
50,971
+22,381
+78% +$84.2K 0.01% 1774
2024
Q3 		$133K Sell
28,590
-2,479
-8% -$13.3K 0.01% 1553
2024
Q2 		$141K Buy
31,069
+11,978
+63% +$61.6K 0.01% 1342
2024
Q1 		$115K Sell
19,091
-46,387
-71% -$303K 0.02% 1336
2023
Q4 		$523K Buy
65,478
+28,312
+76% +$168K 0.11% 229
2023
Q3 		$241K Buy
37,166
+25,439
+217% +$165K 0.04% 892
2023
Q2 		$70.5K Buy
+11,727
New +$81.9K 0.01% 1202

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 $5.72T AUM 30.48% 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 $349M AUM 146.07% 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

XTX Topco's ALEC Position: Q1 2026 in Review

XTX Topco reduced its Alector (ALEC) stake by 5.6% in Q1 2026, selling an estimated $66.2K and leaving 559,896 shares worth $1.2M. The position accounts for 0.02% of the portfolio, ranked #1258.

XTX Topco first reported a position in ALEC in Q2 2023 and has held it in 12 quarters since. 138 funds tracked by Wall St. Rank hold ALEC as of Q1 2026.

  • XTX Topco held 559,896 shares of Alector worth $1.2M as of Q1 2026.
  • XTX Topco sold 32,943 Alector shares in Q1 2026, an estimated $66.2K.
  • Alector made up 0.02% of XTX Topco's portfolio in Q1 2026, its #1258 holding.
  • XTX Topco first reported a position in Alector in Q2 2023 and has held it in 12 quarters since.
  • 138 funds tracked by Wall St. Rank held Alector as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.