MC
ALEC icon

Merck & Co’s Alector ALEC Stock Holding History

Merck & Co’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 		$7.13M Hold
3,545,719
– – 1.35% 8
2026
Q1 		$7.62M Hold
3,545,719
– – 2.18% 7
2025
Q4 		$5.53M Hold
3,545,719
– – 2% 6
2025
Q3 		$10.5M Hold
3,545,719
– – 4.6% 4
2025
Q2 		$4.96M Hold
3,545,719
– – 2.3% 5
2025
Q1 		$4.36M Hold
3,545,719
– – 2.65% 5
2024
Q4 		$6.7M Buy
+3,545,719
New +$13.3M 2.6% 5

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
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
ACM
ADAR1 Capital Management Austin, Texas $2.19B AUM 374.99% 1-Year Est. Return

Merck & Co's ALEC Position: Q2 2026 in Review

Merck & Co held its Alector (ALEC) position steady in Q2 2026 at 3,545,719 shares worth $7.13M. The position accounts for 1.35% of the portfolio, ranked #8.

Merck & Co first reported a position in ALEC in Q4 2024 and has held it in 7 quarters since. The position peaked at $10.5M in Q3 2025. 140 funds tracked by Wall St. Rank hold ALEC as of Q2 2026.

  • Merck & Co held 3,545,719 shares of Alector worth $7.13M as of Q2 2026.
  • Merck & Co left its Alector share count unchanged in Q2 2026.
  • Alector made up 1.35% of Merck & Co's portfolio in Q2 2026, its #8 holding.
  • Merck & Co first reported a position in Alector in Q4 2024 and has held it in 7 quarters since.
  • Merck & Co's Alector position peaked at $10.5M in Q3 2025.
  • 140 funds tracked by Wall St. Rank held Alector as of Q2 2026.

Based on Merck & Co's 13F filing for Q2 2026, filed 7 Aug 2026.