Mariner’s Alector ALEC Stock Holding History

Mariner’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	$106K	Buy	52,709 +33,910	+180%	+$72.7K	﹤0.01%	3319
2026 Q1	$40.4K	Buy	+18,799	New	+$37.8K	﹤0.01%	3447

Other funds holding ALEC

TCM

TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

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 Malvern, Pennsylvania $4.68T AUM

KCM

Kynam Capital Management Princeton, New Jersey $1.81B AUM 192.15% 1-Year Est. Return

Merck & Co Rahway, New Jersey $526M AUM 175.27% 1-Year Est. Return

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 New York $210B AUM 57.28% 1-Year Est. Return

Mariner's ALEC Position: Q2 2026 in Review

Mariner increased its Alector (ALEC) stake by 180% in Q2 2026, buying an estimated $72.7K and bringing the position to 52,709 shares worth $106K. The position accounts for ﹤0.01% of the portfolio, ranked #3319.

Mariner first reported a position in ALEC in Q1 2026 and has held it in 2 quarters since. 141 funds tracked by Wall St. Rank hold ALEC as of Q2 2026.

Mariner held 52,709 shares of Alector worth $106K as of Q2 2026.
Mariner bought 33,910 Alector shares in Q2 2026, an estimated $72.7K.
Alector made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #3319 holding.
Mariner first reported a position in Alector in Q1 2026 and has held it in 2 quarters since.
141 funds tracked by Wall St. Rank held Alector as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.