Alector, Inc. (ALEC) Institutional Ownership & Insider Trading
141 institutions reported holding Alector, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 21 insider trades on Form 4 since 2025-10-01.
Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason
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- Market cap
- 204.3M
- P/E TTM
- —
- Dividend yield
- —
- 52-week
- —
- Next earnings
- 10 Nov, in 17 days
Institutions · all 13F filers
quarter to 30 Jun 2026 · filers in both quarters141 institutions held 85.8% of the shares. Across filers that reported both quarters, shares held changed +8.5%.
Largest moves, shares (millions)
Institutional flow by quarter
net shares added or trimmed, millions · filers in both quarters| Quarter | Holders | Shares held, M | Change | Increased | New | Decreased | Closed |
|---|---|---|---|---|---|---|---|
| Jun 26 | 141 | 96 | +8.5% | 56 | 12 | 34 | 6 |
| Mar 26 | 137 | 88 | +6.2% | 42 | 24 | 33 | 18 |
| Dec 25 | 127 | 84 | +10.5% | 39 | 20 | 36 | 37 |
| Sep 25 | 145 | 75 | +5.7% | 41 | 23 | 37 | 11 |
| Jun 25 | 135 | 71 | -2.9% | 45 | 16 | 36 | 19 |
| Mar 25 | 140 | 72 | -1.0% | 40 | 17 | 32 | 25 |
| Dec 24 | 147 | 73 | -8.0% | 42 | 18 | 35 | 36 |
| Sep 24 | 159 | 73 | -5.0% | 44 | 15 | 47 | 19 |
Alector, Inc. — questions
- Who owns Alector, Inc. stock?
- 141 institutions reported Alector, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: TCG Crossover Management, LLC (9.0%), Nantahala Capital Management, LLC (7.7%), BlackRock, Inc. (7.0%).
- Are Alector, Inc. insiders buying or selling?
- 21 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.
Every figure on this page comes from Alector, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.
How these figures are read: methodology · EquiReason.