Alector, Inc.
ALEC- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001653087
In the last 90 days, Alector, Inc. insiders filed 0 open-market purchases and 3 sales; 140 institutions reported holding it in 13F filings for Q2 2026, worth $183.4M in total; no superinvestor holds it.
13F holders, Q2 2025
Institutional positions in Alector, Inc. as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 136
- −5 vs. Q1 2025
- Shares held
- 70.5M
- −2.11M (−2.9%) vs. Q1 2025
- Total value
- $98.7M
- +$9.57M (+10.7%) vs. Q1 2025
- New holders
- 17
- 47 more added
- Sold out
- 22
- 37 more reduced
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ALEC on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 140 | $183.4M |
| Q1 2026 | 138 | $190.0M |
| Q4 2025 | 131 | $131.5M |
| Q3 2025 | 149 | $221.2M |
| Q2 2025 | 136 | $98.7M |
| Q1 2025 | 141 | $89.1M |
| Q4 2024 | 150 | $138.8M |
| Q3 2024 | 159 | $338.4M |
| Q2 2024 | 160 | $330.4M |
| Q1 2024 | 157 | $446.6M |
| Q4 2023 | 148 | $510.1M |
| Q3 2023 | 149 | $402.6M |
| Q2 2023 | 145 | $354.5M |
| Q1 2023 | 149 | $360.9M |
| Q4 2022 | 155 | $506.0M |
| Q3 2022 | 168 | $516.1M |
| Q2 2022 | 154 | $546.8M |
| Q1 2022 | 166 | $789.8M |
| Q4 2021 | 167 | $1.13B |
| Q3 2021 | 145 | $1.19B |
| Q2 2021 | 138 | $1.02B |
| Q1 2021 | 127 | $931.7M |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding Alector, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| New Leaf Venture Partners, L.L.C. | 339,569 | $475.4K | 1.44% | 00.0% | Unchanged |
| Bank of America Corp | 343,909 | $481.5K | 0.00% | +5,927+1.8% | Added |
| Royal Bank of Canada | 367,188 | $513.0K | 0.00% | +362,395+7,560.9% | Added |
| Goldman Sachs Group Inc | 374,477 | $524.3K | 0.00% | +62,332+20.0% | Added |
| Two Sigma Advisers, LP | 377,000 | $527.8K | 0.00% | −15,900−4.0% | Reduced |
| Dimensional Fund Advisors LP | 383,331 | $536.9K | 0.00% | −106,003−21.7% | Reduced |
| AQR Capital Management LLC | 406,618 | $569.3K | 0.00% | −85,974−17.5% | Reduced |
| Millennium Management LLC | 410,803 | $575.1K | 0.00% | +145,987+55.1% | Added |
| Boothbay Fund Management, LLC | 458,863 | $642.4K | 0.02% | +184,503+67.2% | Added |
| Panagora Asset Management Inc | 516,680 | $723.4K | 0.00% | +150,135+41.0% | Added |
| D. E. Shaw & Co., Inc. | 534,200 | $747.9K | 0.00% | +64,899+13.8% | Added |
| Citadel Advisors LLC | 551,820 | $772.5K | 0.00% | +546,382+10,047.5% | Added |
| Morgan Stanley | 606,552 | $849.2K | 0.00% | +259,845+74.9% | Added |
| Charles Schwab Investment Management Inc | 647,653 | $906.7K | 0.00% | +22,923+3.7% | Added |
| TD Asset Management Inc | 651,738 | $912.4K | 0.00% | +540,000+483.3% | Added |
| Northern Trust Corp | 658,161 | $921.4K | 0.00% | −39,068−5.6% | Reduced |
| Sio Capital Management, LLC | 845,531 | $1.18M | 0.48% | +8,372+1.0% | Added |
| Ikarian Capital, LLC | 900,000 | $1.26M | 0.42% | −50,000−5.3% | Reduced |
| DAFNA Capital Management LLC | 912,928 | $1.28M | 0.35% | 00.0% | Unchanged |
| Vestal Point Capital, LP | 976,992 | $1.37M | 0.07% | +472,452+93.6% | Added |
| Deutsche Bank AG | 989,747 | $1.39M | 0.00% | −111,800−10.1% | Reduced |
| 5AM Venture Management, LLC | 995,841 | $1.39M | 0.54% | 00.0% | Unchanged |
| Deerfield Management Company, L.P. (Series C) | 1,055,192 | $1.48M | 0.03% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 1,254,850 | $1.76M | 0.00% | +220,995+21.4% | Added |
| Euclidean Capital LLC | 1,307,858 | $1.83M | 0.60% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 1,322,882 | $1.85M | 0.01% | −11,150−0.8% | Reduced |
| State Street Corp | 1,709,902 | $2.39M | 0.00% | +69,640+4.2% | Added |
| ADAR1 Capital Management, LLC | 1,723,526 | $2.41M | 0.39% | +1,343,196+353.2% | Added |
| Geode Capital Management, LLC | 1,982,068 | $2.78M | 0.00% | +19,970+1.0% | Added |
| Eversept Partners, LP | 1,986,072 | $2.78M | 0.28% | +1,368,654+221.7% | Added |
| Acadian Asset Management LLC | 2,170,388 | $3.03M | 0.01% | +729,727+50.7% | Added |
| Merck & Co., Inc. | 3,545,719 | $4.96M | 2.30% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 4,875,264 | $6.83M | 0.00% | +4,198,951+620.9% | Added |
| Vanguard Group Inc | 5,987,704 | $8.38M | 0.00% | −65,337−1.1% | Reduced |
| BlackRock, Inc. | 7,973,580 | $11.2M | 0.00% | −306,122−3.7% | Reduced |
| FMR LLC | 14,998,889 | $21.0M | 0.00% | +608,650+4.2% | Added |
| Ra Capital Management, L.P. | 0 | $0 | 0.00% | −9,695,228−100.0% | Sold out |
| Franklin Resources Inc | 0 | $0 | 0.00% | −834,270−100.0% | Sold out |
| Almitas Capital LLC | 0 | $0 | 0.00% | −321,568−100.0% | Sold out |
| Sphera Funds Management Ltd. | 0 | $0 | 0.00% | −109,208−100.0% | Sold out |
| Cercano Management LLC | 0 | $0 | 0.00% | −93,633−100.0% | Sold out |
| Alps Advisors Inc | 0 | $0 | 0.00% | −74,933−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −60,248−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −59,214−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −59,099−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −40,171−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −19,539−100.0% | Sold out |
| CIBC World Markets Corp | 0 | $0 | 0.00% | −18,195−100.0% | Sold out |
| Wealth Enhancement Advisory Services, LLC | 0 | $0 | 0.00% | −13,678−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −12,949−100.0% | Sold out |
| Pallas Capital Advisors LLC | 0 | $0 | 0.00% | −12,111−100.0% | Sold out |
| California State Teachers Retirement System | 0 | $0 | 0.00% | −5,848−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −4,030−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −1,752−100.0% | Sold out |
| Carolinas Wealth Consulting LLC | 0 | $0 | 0.00% | −1,500−100.0% | Sold out |
| Coldstream Capital Management Inc | 0 | $0 | 0.00% | −586−100.0% | Sold out |
| Farther Finance Advisors, LLC | 0 | $0 | 0.00% | −40−100.0% | Sold out |
| Covestor Ltd | 0 | $0 | 0.00% | −48−100.0% | Sold out |