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Deerfield Management’s Alector ALEC Stock Holding History

Deerfield Management’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 		$2.27M Hold
1,055,192
– – 0.03% 72
2025
Q4 		$1.65M Hold
1,055,192
– – 0.02% 108
2025
Q3 		$3.12M Hold
1,055,192
– – 0.05% 84
2025
Q2 		$1.48M Hold
1,055,192
– – 0.03% 79
2025
Q1 		$1.3M Sell
1,055,192
-11,770
-1% -$19.2K 0.03% 84
2024
Q4 		$2.02M Buy
1,066,962
+11,770
+1% +$44.3K 0.04% 76
2024
Q3 		$4.92M Sell
1,055,192
-93,134
-8% -$499K 0.07% 69
2024
Q2 		$5.21M Buy
1,148,326
+75,481
+7% +$388K 0.09% 70
2024
Q1 		$6.46M Buy
1,072,845
+5,035
+0.5% +$32.9K 0.11% 68
2023
Q4 		$8.52M Buy
1,067,810
+12,618
+1% +$74.8K 0.16% 53
2023
Q3 		$6.84M Hold
1,055,192
– – 0.15% 65
2023
Q2 		$6.34M Hold
1,055,192
– – 0.14% 76
2023
Q1 		$6.53M Hold
1,055,192
– – 0.15% 79
2022
Q4 		$9.74M Hold
1,055,192
– – 0.2% 73
2022
Q3 		$9.98M Hold
1,055,192
– – 0.2% 83
2022
Q2 		$10.7M Hold
1,055,192
– – 0.22% 76
2022
Q1 		$15M Hold
1,055,192
– – 0.34% 60
2021
Q4 		$21.8M Hold
1,055,192
– – 0.46% 54
2021
Q3 		$24.1M Hold
1,055,192
– – 0.47% 60
2021
Q2 		$22M Hold
1,055,192
– – 0.39% 79
2021
Q1 		$21.3M Hold
1,055,192
– – 0.45% 71
2020
Q4 		$16M Sell
1,055,192
-406,786
-28% -$5.06M 0.32% 80
2020
Q3 		$15.4M Sell
1,461,978
-215,019
-13% -$3.48M 0.38% 68
2020
Q2 		$41M Sell
1,676,997
-62,000
-4% -$1.71M 1.19% 27
2020
Q1 		$42M Sell
1,738,997
-337,815
-16% -$8.61M 1.33% 25
2019
Q4 		$35.8M Hold
2,076,812
– – 1.14% 31
2019
Q3 		$29.9M Buy
2,076,812
+329,889
+19% +$5.96M 1.22% 25
2019
Q2 		$33.2M Sell
1,746,923
-210,000
-11% -$4.26M 1.19% 24
2019
Q1 		$36.6M Buy
+1,956,923
New +$37M 1.4% 21

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

Deerfield Management's ALEC Position: Q1 2026 in Review

Deerfield Management held its Alector (ALEC) position steady in Q1 2026 at 1,055,192 shares worth $2.27M. The position accounts for 0.03% of the portfolio, ranked #72.

Deerfield Management first reported a position in ALEC in Q1 2019 and has held it in 29 quarters since. The position peaked at $42M in Q1 2020. 138 funds tracked by Wall St. Rank hold ALEC as of Q1 2026.

  • Deerfield Management held 1,055,192 shares of Alector worth $2.27M as of Q1 2026.
  • Deerfield Management left its Alector share count unchanged in Q1 2026.
  • Alector made up 0.03% of Deerfield Management's portfolio in Q1 2026, its #72 holding.
  • Deerfield Management first reported a position in Alector in Q1 2019 and has held it in 29 quarters since.
  • Deerfield Management's Alector position peaked at $42M in Q1 2020.
  • 138 funds tracked by Wall St. Rank held Alector as of Q1 2026.

Based on Deerfield Management's 13F filing for Q1 2026, filed 15 May 2026.