SEI Investments’s Alector ALEC Stock Holding History

SEI Investments’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	$143K	Buy	71,151 +17,305	+32%	+$37.1K	﹤0.01%	3125
2026 Q1	$116K	Buy	53,846 +36,962	+219%	+$74.2K	﹤0.01%	3073
2025 Q4	$26.3K	Hold	16,884	–	–	﹤0.01%	3110
2025 Q3	$50K	Hold	16,884	–	–	﹤0.01%	2778
2025 Q2	$23.6K	Hold	16,884	–	–	﹤0.01%	2778
2025 Q1	$20.8K	Buy	+16,884	New	+$27.5K	﹤0.01%	2738
2023 Q1	–	Sell	-41,711	Closed	-$385K	–	2681
2022 Q4	$385K	Sell	41,711 -7,068	-14%	-$61.6K	﹤0.01%	2124
2022 Q3	$461K	Buy	+48,779	New	+$527K	﹤0.01%	2125
2022 Q1	–	Sell	-13,815	Closed	-$285K	–	2570
2021 Q4	$285K	Sell	13,815 -1,685	-11%	-$38K	﹤0.01%	2349
2021 Q3	$354K	Buy	+15,500	New	+$434K	﹤0.01%	2242

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

SEI Investments's ALEC Position: Q2 2026 in Review

SEI Investments increased its Alector (ALEC) stake by 32% in Q2 2026, buying an estimated $37.1K and bringing the position to 71,151 shares worth $143K. The position accounts for ﹤0.01% of the portfolio, ranked #3125.

SEI Investments first reported a position in ALEC in Q3 2021 and has held it in 10 quarters since. The position peaked at $461K in Q3 2022. 141 funds tracked by Wall St. Rank hold ALEC as of Q2 2026.

SEI Investments held 71,151 shares of Alector worth $143K as of Q2 2026.
SEI Investments bought 17,305 Alector shares in Q2 2026, an estimated $37.1K.
Alector made up ﹤0.01% of SEI Investments's portfolio in Q2 2026, its #3125 holding.
SEI Investments first reported a position in Alector in Q3 2021 and has held it in 10 quarters since.
SEI Investments's Alector position peaked at $461K in Q3 2022.
141 funds tracked by Wall St. Rank held Alector as of Q2 2026.

Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.