Filing Flows › Alector (ALEC) › Who owns the stock
Who owns Alector (ALEC) stock
131 funds reported Alector (ALEC) shares in their latest 13F filings, worth $203M in all. The largest holder is TCG Crossover Management, LLC ($20.1M). Last quarter 62 funds added to their stakes and 43 cut them.
Largest holders (13F)
| Fund | Shares | Value | Change | Quarter |
|---|---|---|---|---|
| TCG Crossover Management, LLC | 10,000,000 | $20.1M | unchanged | 2026-06-30 |
| Nantahala Capital Management, LLC | 8,636,218 | $17.4M | increase | 2026-06-30 |
| BlackRock | 7,847,879 | $15.8M | increase | 2026-06-30 |
| Vanguard Group | 6,908,054 | $10.8M | increase | 2025-12-31 |
| Acadian Asset Management LLC | 4,414,345 | $8.9M | increase | 2026-06-30 |
| Vanguard Capital Management LLC | 4,009,340 | $8.1M | increase | 2026-06-30 |
| Kynam Capital Management, LP | 3,808,494 | $7.7M | increase | 2026-06-30 |
| Merck | 3,545,719 | $7.1M | unchanged | 2026-06-30 |
| Balyasny Asset Management L.P. | 3,247,426 | $6.5M | increase | 2026-06-30 |
| 683 Capital Management, LLC | 3,200,000 | $6.4M | unchanged | 2026-06-30 |
| D. E. Shaw | 2,959,983 | $5.9M | decrease | 2026-06-30 |
| ADAR1 Capital Management, LLC | 2,883,583 | $5.8M | increase | 2026-06-30 |
| Vanguard Portfolio Management LLC | 2,820,493 | $5.7M | increase | 2026-06-30 |
| Geode Capital Management, LLC | 2,454,271 | $4.9M | increase | 2026-06-30 |
| Spruce Street Capital LP | 2,101,068 | $4.2M | unchanged | 2026-06-30 |
Alector's latest quarter
Alector, Q3 2026: revenue $163M (50× year over year), operating margin 76.0%, net earnings $125M, operating cash flow −$24.2M. The chart follows the revenue to costs, profit and cash.
Questions
Who owns the most ALEC stock?
By the latest 13F filings: TCG Crossover Management, LLC ($20.1M); Nantahala Capital Management, LLC ($17.4M); BlackRock ($15.8M); Vanguard Group ($10.8M); Acadian Asset Management LLC ($8.9M).
What is the short interest in ALEC?
10,254,239 shares were sold short at the 2026-10-15 settlement, 66.82% of the float.
Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.