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, Q4 2023
Institutional positions in Alector, Inc. as of Dec 31, 2023. 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
- 148
- 0 vs. Q3 2023
- Shares held
- 63.9M
- +1.94M (+3.1%) vs. Q3 2023
- Total value
- $510.1M
- +$108.0M (+26.9%) vs. Q3 2023
- New holders
- 15
- 48 more added
- Sold out
- 15
- 49 more reduced
1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding Alector, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 12,620,404 | $100.7M | 0.01% | +448,359+3.7% | Added |
| BlackRock Inc. | 8,068,553 | $64.4M | 0.00% | +337,575+4.4% | Added |
| Morgan Stanley | 4,650,191 | $37.1M | 0.00% | +1,312,805+39.3% | Added |
| Vanguard Group Inc | 4,386,541 | $35.0M | 0.00% | −1,134,367−20.5% | Reduced |
| EcoR1 Capital, LLC | 4,056,548 | $32.4M | 0.84% | 00.0% | Unchanged |
| Braidwell LP | 3,324,308 | $26.5M | 0.97% | −749,812−18.4% | Reduced |
| State Street Corp | 3,117,529 | $24.9M | 0.00% | +280,822+9.9% | Added |
| Deutsche Bank AG | 2,062,099 | $16.5M | 0.01% | +2,028,862+6,104.2% | Added |
| JPMorgan Chase & Co | 1,863,998 | $14.9M | 0.00% | −424,371−18.5% | Reduced |
| Geode Capital Management, LLC | 1,381,786 | $11.0M | 0.00% | +78,709+6.0% | Added |
| Euclidean Capital LLC | 1,307,858 | $10.4M | 1.17% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 1,201,549 | $9.59M | 0.00% | +54,582+4.8% | Added |
| Deerfield Management Company, L.P. (Series C) | 1,067,810 | $8.52M | 0.16% | +12,618+1.2% | Added |
| Franklin Resources Inc | 959,524 | $7.66M | 0.00% | +3620.0% | Added |
| Jacobs Levy Equity Management, Inc | 794,284 | $6.34M | 0.03% | +16,207+2.1% | Added |
| Dimensional Fund Advisors LP | 764,394 | $6.10M | 0.00% | +83,169+12.2% | Added |
| Northern Trust Corp | 614,556 | $4.90M | 0.00% | −21,509−3.4% | Reduced |
| DAFNA Capital Management LLC | 609,905 | $4.87M | 1.17% | −19,033−3.0% | Reduced |
| Renaissance Technologies LLC | 571,983 | $4.56M | 0.01% | +69,780+13.9% | Added |
| Charles Schwab Investment Management Inc | 499,529 | $3.99M | 0.00% | +17,307+3.6% | Added |
| Alliancebernstein L.P. | 492,285 | $3.93M | 0.00% | +162,664+49.3% | Added |
| Bank of America Corp | 440,315 | $3.51M | 0.00% | +15,702+3.7% | Added |
| Nuveen Asset Management, LLC | 432,691 | $3.45M | 0.00% | +1,145+0.3% | Added |
| Two Sigma Advisers, LP | 393,100 | $3.14M | 0.01% | +4,100+1.1% | Added |
| Baillie Gifford & Co | 345,924 | $2.76M | 0.00% | −22,048−6.0% | Reduced |
| New Leaf Venture Partners, L.L.C. | 339,569 | $2.71M | 2.18% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 285,893 | $2.28M | 0.00% | +37,674+15.2% | Added |
| Walleye Capital LLC | 262,126 | $2.09M | 0.03% | +262,126 | New |
| Campbell & CO Investment Adviser LLC | 240,625 | $1.92M | 0.17% | +240,625 | New |
| HRT Financial LP | 239,116 | $1.91M | 0.01% | +45,822+23.7% | Added |
| Panagora Asset Management Inc | 236,645 | $1.89M | 0.01% | −56,889−19.4% | Reduced |
| Millennium Management LLC | 235,635 | $1.88M | 0.00% | −121,130−34.0% | Reduced |
| Jupiter Asset Management Ltd | 232,219 | $1.85M | 0.02% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 209,052 | $1.67M | 0.00% | −22,943−9.9% | Reduced |
| Barclays PLC | 193,228 | $1.54M | 0.00% | +54,402+39.2% | Added |
| Medici Capital LLC | 192,747 | $1.54M | 2.04% | +133,093+223.1% | Added |
| Two Sigma Investments, LP | 192,547 | $1.54M | 0.00% | +90,116+88.0% | Added |
| Rafferty Asset Management, LLC | 190,911 | $1.52M | 0.01% | +4,287+2.3% | Added |
| Nordea Investment Management AB | 190,290 | $1.50M | 0.00% | −12,417−6.1% | Reduced |
| D. E. Shaw & Co., Inc. | 184,147 | $1.47M | 0.00% | +65,129+54.7% | Added |
| UBS Group AG | 178,692 | $1.43M | 0.00% | +99,010+124.3% | Added |
| Alphabet Inc. | 175,866 | $1.40M | 0.07% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 162,829 | $1.30M | 0.02% | +153,212+1,593.1% | Added |
| Verition Fund Management LLC | 146,445 | $1.17M | 0.01% | −20,559−12.3% | Reduced |
| Stifel Financial Corp | 145,759 | $1.16M | 0.00% | +119,609+457.4% | Added |
| Acadian Asset Management LLC | 142,711 | $1.14M | 0.00% | −10,555−6.9% | Reduced |
| Point72 Asset Management, L.P. | 139,000 | $1.11M | 0.00% | −599,782−81.2% | Reduced |
| State of Wisconsin Investment Board | 129,033 | $1.03M | 0.00% | −18,711−12.7% | Reduced |
| Victory Capital Management Inc | 125,392 | $1.00M | 0.00% | −9,326−6.9% | Reduced |
| Swiss National Bank | 123,900 | $988.7K | 0.00% | −11,700−8.6% | Reduced |
| Manufacturers Life Insurance Company, The | 117,994 | $941.6K | 0.00% | +39,783+50.9% | Added |
| TD Asset Management Inc | 111,738 | $891.7K | 0.00% | −7,400−6.2% | Reduced |
| Ameriprise Financial Inc | 107,431 | $857.3K | 0.00% | +27,357+34.2% | Added |
| Jane Street Group, LLC | 105,425 | $841.3K | 0.00% | +43,362+69.9% | Added |
| Capital Impact Advisors, LLC | 102,381 | $817.0K | 1.07% | +50,916+98.9% | Added |
| DekaBank Deutsche Girozentrale | 100,000 | $784.0K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 94,955 | $757.7K | 0.00% | +14,287+17.7% | Added |
| Rhumbline Advisers | 87,598 | $699.0K | 0.00% | −83−0.1% | Reduced |
| Credit Suisse AG | 85,298 | $680.7K | 0.00% | +1,617+1.9% | Added |
| Citigroup Inc | 82,544 | $658.7K | 0.00% | +3,021+3.8% | Added |
| Susquehanna International Group, LLP | 79,205 | $632.1K | 0.00% | −3,965−4.8% | Reduced |
| STRS Ohio | 73,200 | $584.0K | 0.00% | 00.0% | Unchanged |
| American Century Companies Inc | 72,583 | $579.2K | 0.00% | −3,086−4.1% | Reduced |
| Russell Investments Group, Ltd. | 71,282 | $568.8K | 0.00% | −48,838−40.7% | Reduced |
| California State Teachers Retirement System | 66,424 | $530.1K | 0.00% | −2,833−4.1% | Reduced |
| Cannell Peter B & Co Inc | 66,177 | $528.1K | 0.02% | −22,075−25.0% | Reduced |
| AQR Capital Management LLC | 65,667 | $524.0K | 0.00% | +1,870+2.9% | Added |
| XTX Topco Ltd | 65,478 | $522.5K | 0.11% | +28,312+76.2% | Added |
| UBS Asset Management Americas Inc | 64,720 | $516.5K | 0.00% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 64,523 | $514.9K | 0.00% | −91,133−58.5% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 61,239 | $488.7K | 0.00% | +2,120+3.6% | Added |
| Legal & General Group Plc | 59,642 | $475.9K | 0.00% | −169−0.3% | Reduced |
| Los Angeles Capital Management LLC | 58,756 | $468.9K | 0.00% | −111,442−65.5% | Reduced |
| Alps Advisors Inc | 56,790 | $453.2K | 0.00% | −5,042−8.2% | Reduced |
| Principal Financial Group Inc | 48,755 | $389.1K | 0.00% | +7,262+17.5% | Added |
| Truist Financial Corp | 45,638 | $364.2K | 0.00% | −4,050−8.2% | Reduced |
| Trexquant Investment LP | 44,571 | $355.7K | 0.01% | −4,201−8.6% | Reduced |
| Balyasny Asset Management LLC | 41,136 | $328.3K | 0.00% | +41,136 | New |
| Healthcare of Ontario Pension Plan Trust Fund | 40,500 | $323.2K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 34,145 | $269.3K | 0.00% | −2,662−7.2% | Reduced |
| Point72 Middle East FZE | 32,726 | $261.2K | 0.02% | +32,726 | New |
| MetLife Investment Management | 31,825 | $254.0K | 0.00% | 00.0% | Unchanged |
| Profund Advisors LLC | 31,667 | $252.7K | 0.01% | −323−1.0% | Reduced |
| American International Group, Inc. | 31,550 | $251.8K | 0.00% | −127−0.4% | Reduced |
| Utah Retirement Systems | 30,858 | $246.2K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 30,130 | $240.4K | 0.00% | −4,443−12.9% | Reduced |
| Voya Investment Management LLC | 25,946 | $207.0K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 25,758 | $205.5K | 0.00% | +13,189+104.9% | Added |
| State Board of Administration of Florida Retirement System | 25,570 | $204.0K | 0.00% | 00.0% | Unchanged |
| Cornercap Investment Counsel Inc | 24,532 | $195.8K | 0.03% | 00.0% | Unchanged |
| Shell Asset Management Co | 24,191 | $193.0K | 0.01% | −7,312−23.2% | Reduced |
| Janus Henderson Group PLC | 23,658 | $188.9K | 0.00% | −48−0.2% | Reduced |
| Vident Advisory, LLC | 23,190 | $185.1K | 0.00% | −3,612−13.5% | Reduced |
| Royal Bank of Canada | 22,377 | $179.0K | 0.00% | +13,391+149.0% | Added |
| Massachusetts Financial Services Co | 21,280 | $169.8K | 0.00% | −671−3.1% | Reduced |
| Cookson Peirce & Co Inc | 20,000 | $160.0K | 0.01% | +20,000 | New |
| Erste Asset Management GmbH | 19,000 | $152.0K | 0.00% | 00.0% | Unchanged |
| Brevan Howard Capital Management LP | 18,975 | $151.4K | 0.02% | +18,975 | New |
| Amundi | 18,638 | $150.6K | 0.00% | −24,085−56.4% | Reduced |
| NinePointTwo Capital | 18,542 | $147.0K | 0.06% | 00.0% | Unchanged |