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