Alector, Inc. (ALEC) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

102,597,601Shares Outstanding
85,371,033Shares held by institutions
$149,399,308Value of institutional holdings
83.21%Institutional ownership %
34.94%Shares Changed QoQ
125No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Alector, Inc. (NASDAQ:ALEC) has 125 institutional investors with active 13F positions as of December 2025.

135 Institutional Holders

85,371,033 Total Shares Held
Download Data
Owner Name Date Shares Held Change (QoQ) Change (%) Value (USD)
TCG Crossover Management, LLC 31 Mar, 2026 10,000,000 0 0.00% $21,500,000.00
BlackRock, Inc. 31 Mar, 2026 7,741,245 593,479 8.30% $16,643,677.00
ACADIAN ASSET MANAGEMENT LLC 31 Mar, 2026 4,038,785 596,336 17.32% $8,675.00
Foresite Capital Management IV, LLC 31 Mar, 2026 3,887,200 0 0.00% $8,357,480.00
VANGUARD CAPITAL MANAGEMENT LLC 31 Mar, 2026 3,678,722 3,678,722 0.00% $7,909,252.00
Merck & Co., Inc. 31 Mar, 2026 3,545,719 0 0.00% $7,623,297.00
D. E. Shaw & Co., Inc. 31 Mar, 2026 3,332,835 967,684 40.91% $7,165,596.00
683 Capital Management, LLC 31 Mar, 2026 3,200,000 -150,000 -4.48% $6,880,000.00
BALYASNY ASSET MANAGEMENT L.P. 31 Mar, 2026 2,935,253 -330,322 -10.12% $6,310,794.00
Nantahala Capital Management, LLC 31 Mar, 2026 2,815,983 2,815,983 0.00% $6,054,363.00
VANGUARD PORTFOLIO MANAGEMENT LLC 31 Mar, 2026 2,583,542 2,583,542 0.00% $5,554,615.00
GEODE CAPITAL MANAGEMENT, LLC 31 Mar, 2026 2,286,218 210,998 10.17% $4,916,361.00
JACOBS LEVY EQUITY MANAGEMENT, INC 31 Mar, 2026 2,154,361 -18,841 -0.87% $4,631,876.00
Spruce Street Capital LP 31 Mar, 2026 2,101,068 983,082 87.93% $4,517,296.00
Ikarian Capital, LLC 31 Mar, 2026 2,082,606 0 0.00% $4,477,603.00
Kynam Capital Management, LP 31 Mar, 2026 2,000,000 0 0.00% $4,300,000.00
MILLENNIUM MANAGEMENT LLC 31 Mar, 2026 1,979,226 646,312 48.49% $4,255,336.00
State Street Corp 31 Mar, 2026 1,865,526 51,228 2.82% $4,010,881.00
FMR LLC 31 Mar, 2026 1,796,104 -435,067 -19.50% $3,861,624.00
MEDICI CAPITAL LLC 31 Mar, 2026 1,652,520 152,000 10.13% $3,552,918.00