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, Q1 2024
Institutional positions in Alector, Inc. as of Mar 31, 2024. 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
- 157
- +11 vs. Q4 2023
- Shares held
- 74.2M
- +10.4M (+16.2%) vs. Q4 2023
- Total value
- $446.6M
- −$62.8M (−12.3%) vs. Q4 2023
- New holders
- 28
- 60 more added
- Sold out
- 17
- 36 more reduced
2 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2023: 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, Q1 2024
Shares, value and share of portfolio for each institution holding Alector, Inc.; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Massachusetts Financial Services Co | 109,130 | $657.0K | 0.00% | +87,850+412.8% | Added |
| TD Asset Management Inc | 111,738 | $672.7K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 117,994 | $710.3K | 0.00% | 00.0% | Unchanged |
| Susquehanna Fundamental Investments, LLC | 126,164 | $759.5K | 0.04% | +126,164 | New |
| Victory Capital Management Inc | 129,140 | $777.4K | 0.00% | +3,748+3.0% | Added |
| Swiss National Bank | 131,900 | $794.0K | 0.00% | +8,000+6.5% | Added |
| BIT Capital GmbH | 141,372 | $851.1K | 0.08% | +141,372 | New |
| Stifel Financial Corp | 146,688 | $883.1K | 0.00% | +929+0.6% | Added |
| Alphabet Inc. | 175,866 | $1.06M | 0.04% | 00.0% | Unchanged |
| Marshall Wace, LLP | 177,278 | $1.07M | 0.00% | +177,278 | New |
| Medici Capital LLC | 185,929 | $1.12M | 1.28% | −6,818−3.5% | Reduced |
| Woodline Partners LP | 190,000 | $1.14M | 0.01% | +190,000 | New |
| AQR Capital Management LLC | 190,210 | $1.15M | 0.00% | +124,543+189.7% | Added |
| Nordea Investment Management AB | 188,767 | $1.16M | 0.00% | −1,523−0.8% | Reduced |
| Panagora Asset Management Inc | 219,704 | $1.32M | 0.01% | −16,941−7.2% | Reduced |
| UBS Group AG | 229,486 | $1.38M | 0.00% | +50,794+28.4% | Added |
| Bank of New York Mellon Corp | 230,313 | $1.39M | 0.00% | +21,261+10.2% | Added |
| Jupiter Asset Management Ltd | 232,219 | $1.40M | 0.01% | 00.0% | Unchanged |
| Citigroup Inc | 240,976 | $1.45M | 0.00% | +158,432+191.9% | Added |
| Walleye Capital LLC | 252,808 | $1.52M | 0.02% | −9,318−3.6% | Reduced |
| Alyeska Investment Group, L.P. | 256,182 | $1.54M | 0.01% | +256,182 | New |
| Rafferty Asset Management, LLC | 275,630 | $1.66M | 0.01% | +84,719+44.4% | Added |
| Goldman Sachs Group Inc | 319,265 | $1.92M | 0.00% | +33,372+11.7% | Added |
| Baillie Gifford & Co | 322,829 | $1.94M | 0.00% | −23,095−6.7% | Reduced |
| D. E. Shaw & Co., Inc. | 329,625 | $1.98M | 0.00% | +145,478+79.0% | Added |
| New Leaf Venture Partners, L.L.C. | 339,569 | $2.04M | 1.79% | 00.0% | Unchanged |
| Nuveen Asset Management, LLC | 339,884 | $2.05M | 0.00% | −92,807−21.4% | Reduced |
| Bank of America Corp | 353,651 | $2.13M | 0.00% | −86,664−19.7% | Reduced |
| Two Sigma Investments, LP | 364,629 | $2.20M | 0.01% | +172,082+89.4% | Added |
| Acadian Asset Management LLC | 444,647 | $2.67M | 0.01% | +301,936+211.6% | Added |
| Eversept Partners, LP | 536,171 | $3.23M | 0.24% | +536,171 | New |
| Two Sigma Advisers, LP | 539,500 | $3.25M | 0.01% | +146,400+37.2% | Added |
| Sphera Funds Management Ltd. | 560,000 | $3.37M | 0.55% | +560,000 | New |
| Northern Trust Corp | 670,223 | $4.03M | 0.00% | +55,667+9.1% | Added |
| Charles Schwab Investment Management Inc | 674,790 | $4.06M | 0.00% | +175,261+35.1% | Added |
| Renaissance Technologies LLC | 675,483 | $4.07M | 0.01% | +103,500+18.1% | Added |
| Point72 Asset Management, L.P. | 695,300 | $4.19M | 0.01% | +556,300+400.2% | Added |
| Alliancebernstein L.P. | 725,686 | $4.37M | 0.00% | +233,401+47.4% | Added |
| Dimensional Fund Advisors LP | 845,964 | $5.09M | 0.00% | +81,570+10.7% | Added |
| Price T Rowe Associates Inc | 890,494 | $5.36M | 0.00% | −311,055−25.9% | Reduced |
| DAFNA Capital Management LLC | 912,928 | $5.50M | 1.25% | +303,023+49.7% | Added |
| Jacobs Levy Equity Management, Inc | 922,799 | $5.56M | 0.02% | +128,515+16.2% | Added |
| Franklin Resources Inc | 959,524 | $5.78M | 0.00% | 00.0% | Unchanged |
| Deerfield Management Company, L.P. (Series C) | 1,072,845 | $6.46M | 0.11% | +5,035+0.5% | Added |
| Verition Fund Management LLC | 1,253,029 | $7.54M | 0.07% | +1,106,584+755.6% | Added |
| Euclidean Capital LLC | 1,307,858 | $7.87M | 1.01% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 1,575,770 | $9.49M | 0.00% | +193,984+14.0% | Added |
| JPMorgan Chase & Co | 1,715,764 | $10.3M | 0.00% | −148,234−8.0% | Reduced |
| Braidwell LP | 2,380,704 | $14.3M | 0.46% | −943,604−28.4% | Reduced |
| Deutsche Bank AG | 2,642,867 | $15.9M | 0.01% | +580,768+28.2% | Added |
| Morgan Stanley | 3,304,976 | $19.9M | 0.00% | −1,345,215−28.9% | Reduced |
| Deep Track Capital, LP | 3,769,386 | $22.7M | 0.65% | +3,769,386 | New |
| State Street Corp | 3,915,169 | $23.6M | 0.00% | +797,640+25.6% | Added |
| EcoR1 Capital, LLC | 4,056,548 | $24.4M | 0.62% | 00.0% | Unchanged |
| Vanguard Group Inc | 4,912,578 | $29.6M | 0.00% | +526,037+12.0% | Added |
| BlackRock Inc. | 8,483,565 | $51.1M | 0.00% | +415,012+5.1% | Added |
| FMR LLC | 14,362,388 | $86.5M | 0.01% | +1,741,984+13.8% | Added |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −240,625−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −239,116−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −41,136−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −40,500−100.0% | Sold out |
| Point72 Middle East FZE | 0 | $0 | 0.00% | −32,726−100.0% | Sold out |
| Cookson Peirce & Co Inc | 0 | $0 | 0.00% | −20,000−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −18,975−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −17,279−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −16,726−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −15,300−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −7,191−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −3,000−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −683−100.0% | Sold out |
| Chesapeake Asset Management LLC | 0 | $0 | 0.00% | −150−100.0% | Sold out |
| RFP Financial Group LLC | 0 | $0 | 0.00% | −64−100.0% | Sold out |
| HighMark Wealth Management LLC | 0 | $0 | 0.00% | −50−100.0% | Sold out |
| The PNC Financial Services Group, Inc. | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Cannell Peter B & Co Inc | – | – | – | – | Not filed |
| NinePointTwo Capital | – | – | – | – | Not filed |