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 |
|---|---|---|---|---|---|
| FMR LLC | 14,362,388 | $86.5M | 0.01% | +1,741,984+13.8% | Added |
| BlackRock Inc. | 8,483,565 | $51.1M | 0.00% | +415,012+5.1% | Added |
| Vanguard Group Inc | 4,912,578 | $29.6M | 0.00% | +526,037+12.0% | Added |
| EcoR1 Capital, LLC | 4,056,548 | $24.4M | 0.62% | 00.0% | Unchanged |
| State Street Corp | 3,915,169 | $23.6M | 0.00% | +797,640+25.6% | Added |
| Deep Track Capital, LP | 3,769,386 | $22.7M | 0.65% | +3,769,386 | New |
| Morgan Stanley | 3,304,976 | $19.9M | 0.00% | −1,345,215−28.9% | Reduced |
| Deutsche Bank AG | 2,642,867 | $15.9M | 0.01% | +580,768+28.2% | Added |
| Braidwell LP | 2,380,704 | $14.3M | 0.46% | −943,604−28.4% | Reduced |
| JPMorgan Chase & Co | 1,715,764 | $10.3M | 0.00% | −148,234−8.0% | Reduced |
| Geode Capital Management, LLC | 1,575,770 | $9.49M | 0.00% | +193,984+14.0% | Added |
| Euclidean Capital LLC | 1,307,858 | $7.87M | 1.01% | 00.0% | Unchanged |
| Verition Fund Management LLC | 1,253,029 | $7.54M | 0.07% | +1,106,584+755.6% | Added |
| Deerfield Management Company, L.P. (Series C) | 1,072,845 | $6.46M | 0.11% | +5,035+0.5% | Added |
| Franklin Resources Inc | 959,524 | $5.78M | 0.00% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 922,799 | $5.56M | 0.02% | +128,515+16.2% | Added |
| DAFNA Capital Management LLC | 912,928 | $5.50M | 1.25% | +303,023+49.7% | Added |
| Price T Rowe Associates Inc | 890,494 | $5.36M | 0.00% | −311,055−25.9% | Reduced |
| Dimensional Fund Advisors LP | 845,964 | $5.09M | 0.00% | +81,570+10.7% | Added |
| Alliancebernstein L.P. | 725,686 | $4.37M | 0.00% | +233,401+47.4% | Added |
| Point72 Asset Management, L.P. | 695,300 | $4.19M | 0.01% | +556,300+400.2% | Added |
| Renaissance Technologies LLC | 675,483 | $4.07M | 0.01% | +103,500+18.1% | Added |
| Charles Schwab Investment Management Inc | 674,790 | $4.06M | 0.00% | +175,261+35.1% | Added |
| Northern Trust Corp | 670,223 | $4.03M | 0.00% | +55,667+9.1% | Added |
| Sphera Funds Management Ltd. | 560,000 | $3.37M | 0.55% | +560,000 | New |
| Two Sigma Advisers, LP | 539,500 | $3.25M | 0.01% | +146,400+37.2% | Added |
| Eversept Partners, LP | 536,171 | $3.23M | 0.24% | +536,171 | New |
| Acadian Asset Management LLC | 444,647 | $2.67M | 0.01% | +301,936+211.6% | Added |
| Two Sigma Investments, LP | 364,629 | $2.20M | 0.01% | +172,082+89.4% | Added |
| Bank of America Corp | 353,651 | $2.13M | 0.00% | −86,664−19.7% | Reduced |
| Nuveen Asset Management, LLC | 339,884 | $2.05M | 0.00% | −92,807−21.4% | Reduced |
| New Leaf Venture Partners, L.L.C. | 339,569 | $2.04M | 1.79% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 329,625 | $1.98M | 0.00% | +145,478+79.0% | Added |
| Baillie Gifford & Co | 322,829 | $1.94M | 0.00% | −23,095−6.7% | Reduced |
| Goldman Sachs Group Inc | 319,265 | $1.92M | 0.00% | +33,372+11.7% | Added |
| Rafferty Asset Management, LLC | 275,630 | $1.66M | 0.01% | +84,719+44.4% | Added |
| Alyeska Investment Group, L.P. | 256,182 | $1.54M | 0.01% | +256,182 | New |
| Walleye Capital LLC | 252,808 | $1.52M | 0.02% | −9,318−3.6% | Reduced |
| Citigroup Inc | 240,976 | $1.45M | 0.00% | +158,432+191.9% | Added |
| Jupiter Asset Management Ltd | 232,219 | $1.40M | 0.01% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 230,313 | $1.39M | 0.00% | +21,261+10.2% | Added |
| UBS Group AG | 229,486 | $1.38M | 0.00% | +50,794+28.4% | Added |
| Panagora Asset Management Inc | 219,704 | $1.32M | 0.01% | −16,941−7.2% | Reduced |
| Nordea Investment Management AB | 188,767 | $1.16M | 0.00% | −1,523−0.8% | Reduced |
| AQR Capital Management LLC | 190,210 | $1.15M | 0.00% | +124,543+189.7% | Added |
| Woodline Partners LP | 190,000 | $1.14M | 0.01% | +190,000 | New |
| Medici Capital LLC | 185,929 | $1.12M | 1.28% | −6,818−3.5% | Reduced |
| Marshall Wace, LLP | 177,278 | $1.07M | 0.00% | +177,278 | New |
| Alphabet Inc. | 175,866 | $1.06M | 0.04% | 00.0% | Unchanged |
| Stifel Financial Corp | 146,688 | $883.1K | 0.00% | +929+0.6% | Added |
| BIT Capital GmbH | 141,372 | $851.1K | 0.08% | +141,372 | New |
| Swiss National Bank | 131,900 | $794.0K | 0.00% | +8,000+6.5% | Added |
| Victory Capital Management Inc | 129,140 | $777.4K | 0.00% | +3,748+3.0% | Added |
| Susquehanna Fundamental Investments, LLC | 126,164 | $759.5K | 0.04% | +126,164 | New |
| Manufacturers Life Insurance Company, The | 117,994 | $710.3K | 0.00% | 00.0% | Unchanged |
| TD Asset Management Inc | 111,738 | $672.7K | 0.00% | 00.0% | Unchanged |
| Massachusetts Financial Services Co | 109,130 | $657.0K | 0.00% | +87,850+412.8% | Added |
| Barclays PLC | 102,225 | $615.4K | 0.00% | −91,003−47.1% | Reduced |
| Millennium Management LLC | 102,202 | $615.3K | 0.00% | −133,433−56.6% | Reduced |
| Ameriprise Financial Inc | 102,077 | $614.5K | 0.00% | −5,354−5.0% | Reduced |
| DekaBank Deutsche Girozentrale | 100,000 | $605.0K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 91,526 | $551.0K | 0.00% | +3,928+4.5% | Added |
| STRS Ohio | 91,200 | $549.0K | 0.00% | +18,000+24.6% | Added |
| Credit Suisse AG | 90,715 | $546.1K | 0.00% | +5,417+6.4% | Added |
| Russell Investments Group, Ltd. | 78,348 | $471.7K | 0.00% | +7,066+9.9% | Added |
| UBS Asset Management Americas Inc | 74,055 | $445.8K | 0.00% | +9,335+14.4% | Added |
| American Century Companies Inc | 71,429 | $430.0K | 0.00% | −1,154−1.6% | Reduced |
| Alps Advisors Inc | 67,531 | $406.5K | 0.00% | +10,741+18.9% | Added |
| California State Teachers Retirement System | 67,058 | $403.7K | 0.00% | +634+1.0% | Added |
| Spears Abacus Advisors LLC | 66,177 | $398.4K | 0.01% | +66,177 | New |
| Federated Hermes, Inc. | 65,829 | $396.3K | 0.00% | +1,306+2.0% | Added |
| Man Group plc | 65,298 | $393.1K | 0.00% | +54,134+484.9% | Added |
| Gsa Capital Partners LLP | 63,583 | $383.0K | 0.03% | +63,583 | New |
| Legal & General Group Plc | 60,354 | $363.3K | 0.00% | +712+1.2% | Added |
| New York Life Investment Management LLC | 59,829 | $360.2K | 0.00% | +59,829 | New |
| Los Angeles Capital Management LLC | 58,756 | $353.7K | 0.00% | 00.0% | Unchanged |
| PDT Partners, LLC | 57,530 | $346.3K | 0.03% | +46,373+415.6% | Added |
| State of Wisconsin Investment Board | 55,015 | $331.2K | 0.00% | −74,018−57.4% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 52,643 | $325.6K | 0.00% | −8,596−14.0% | Reduced |
| Cubist Systematic Strategies, LLC | 53,271 | $320.7K | 0.00% | −109,558−67.3% | Reduced |
| ADAR1 Capital Management, LLC | 52,500 | $316.1K | 0.09% | +52,500 | New |
| Susquehanna International Group, LLP | 48,826 | $293.9K | 0.00% | −30,379−38.4% | Reduced |
| BNP Paribas Arbitrage, SA | 43,926 | $264.4K | 0.00% | −51,029−53.7% | Reduced |
| Profund Advisors LLC | 43,322 | $260.8K | 0.01% | +11,655+36.8% | Added |
| Trexquant Investment LP | 42,444 | $255.5K | 0.01% | −2,127−4.8% | Reduced |
| Amundi | 48,918 | $249.0K | 0.00% | +30,280+162.5% | Added |
| Truist Financial Corp | 39,845 | $239.9K | 0.00% | −5,793−12.7% | Reduced |
| Squarepoint Ops LLC | 39,284 | $236.5K | 0.00% | +39,284 | New |
| Jane Street Group, LLC | 36,476 | $219.6K | 0.00% | −68,949−65.4% | Reduced |
| American International Group, Inc. | 35,655 | $214.6K | 0.00% | +4,105+13.0% | Added |
| MetLife Investment Management | 34,413 | $207.2K | 0.00% | +2,588+8.1% | Added |
| Invesco Ltd. | 31,627 | $190.4K | 0.00% | +1,497+5.0% | Added |
| Citadel Advisors LLC | 31,169 | $187.6K | 0.00% | +31,169 | New |
| Utah Retirement Systems | 30,858 | $185.8K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 29,132 | $175.0K | 0.01% | +29,132 | New |
| State Board of Administration of Florida Retirement System | 25,390 | $157.2K | 0.00% | −180−0.7% | Reduced |
| HSBC Holdings PLC | 25,528 | $153.7K | 0.00% | −8,617−25.2% | Reduced |
| New York State Common Retirement Fund | 25,438 | $153.1K | 0.00% | −320−1.2% | Reduced |
| Engineers Gate Manager LP | 24,660 | $148.5K | 0.00% | +24,660 | New |
| Capital Impact Advisors, LLC | 24,562 | $147.9K | 0.19% | −77,819−76.0% | Reduced |