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, Q3 2021
Institutional positions in Alector, Inc. as of Sep 30, 2021. 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
- 145
- +8 vs. Q2 2021
- Shares held
- 52.2M
- +3.06M (+6.2%) vs. Q2 2021
- Total value
- $1.19B
- +$167.3M (+16.3%) vs. Q2 2021
- New holders
- 22
- 60 more added
- Sold out
- 14
- 26 more reduced
1 institution that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2021: 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, Q3 2021
Shares, value and share of portfolio for each institution holding Alector, Inc.; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 5,270,814 | $120.3M | 0.00% | +85,050+1.6% | Added |
| Vanguard Group Inc | 5,077,433 | $115.9M | 0.00% | +146,113+3.0% | Added |
| Federated Hermes, Inc. | 5,000,918 | $114.1M | 0.22% | +459,119+10.1% | Added |
| EcoR1 Capital, LLC | 4,994,970 | $114.0M | 4.03% | +752,336+17.7% | Added |
| FMR LLC | 4,831,794 | $110.3M | 0.01% | +739,702+18.1% | Added |
| State Street Corp | 3,584,519 | $81.8M | 0.00% | +843,189+30.8% | Added |
| JPMorgan Chase & Co | 2,559,893 | $58.4M | 0.01% | −85,949−3.2% | Reduced |
| Franklin Resources Inc | 2,239,417 | $51.1M | 0.02% | −1,083,848−32.6% | Reduced |
| Price T Rowe Associates Inc | 1,866,898 | $42.6M | 0.00% | −754,915−28.8% | Reduced |
| Casdin Capital, LLC | 1,650,000 | $37.7M | 0.94% | 00.0% | Unchanged |
| Marshall Wace North America L.P. | 1,083,580 | $24.7M | 0.11% | +1,083,580 | New |
| Deerfield Management Company, L.P. (Series C) | 1,055,192 | $24.1M | 0.47% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 999,768 | $22.8M | 0.00% | +19,161+2.0% | Added |
| Euclidean Capital LLC | 980,894 | $22.4M | 10.88% | 00.0% | Unchanged |
| Gilder Gagnon Howe & Co LLC | 872,048 | $19.9M | 0.10% | +890.0% | Added |
| Morgan Stanley | 805,260 | $18.4M | 0.00% | +201,699+33.4% | Added |
| Northern Trust Corp | 606,597 | $13.8M | 0.00% | −10,251−1.7% | Reduced |
| Goldman Sachs Group Inc | 594,259 | $13.6M | 0.00% | +67,890+12.9% | Added |
| Voloridge Investment Management, LLC | 425,902 | $9.72M | 0.06% | +318,605+296.9% | Added |
| Charles Schwab Investment Management Inc | 406,112 | $9.27M | 0.00% | +31,919+8.5% | Added |
| Nuveen Asset Management, LLC | 349,111 | $7.97M | 0.00% | +116,871+50.3% | Added |
| Two Sigma Investments, LP | 340,486 | $7.77M | 0.02% | +340,486 | New |
| Baillie Gifford & Co | 340,352 | $7.77M | 0.00% | +39,524+13.1% | Added |
| New Leaf Venture Partners, L.L.C. | 339,569 | $7.75M | 2.24% | 00.0% | Unchanged |
| Marshall Wace, LLP | 312,561 | $7.13M | 0.04% | +312,561 | New |
| Pier Capital, LLC | 306,536 | $7.00M | 0.72% | −30,378−9.0% | Reduced |
| Bank of America Corp | 269,147 | $6.14M | 0.00% | +141,372+110.6% | Added |
| Baker Bros. Advisors LP | 239,228 | $5.46M | 0.02% | 00.0% | Unchanged |
| Millennium Management LLC | 214,550 | $4.90M | 0.01% | +155,412+262.8% | Added |
| Bank of New York Mellon Corp | 184,221 | $4.20M | 0.00% | +15,875+9.4% | Added |
| Alphabet Inc. | 175,866 | $4.01M | 0.10% | 00.0% | Unchanged |
| Citadel Advisors LLC | 174,170 | $3.98M | 0.00% | −120,727−40.9% | Reduced |
| Schroder Investment Management Group | 160,315 | $3.66M | 0.01% | +11,604+7.8% | Added |
| Two Sigma Advisers, LP | 150,200 | $3.43M | 0.01% | +36,700+32.3% | Added |
| UBS Group AG | 141,251 | $3.22M | 0.00% | +126,018+827.3% | Added |
| Rafferty Asset Management, LLC | 136,905 | $3.12M | 0.02% | +41,851+44.0% | Added |
| Cannell Peter B & Co Inc | 135,122 | $3.08M | 0.09% | −9,000−6.2% | Reduced |
| Susquehanna International Group, LLP | 117,067 | $2.67M | 0.00% | +4,151+3.7% | Added |
| Swiss National Bank | 114,000 | $2.60M | 0.00% | 00.0% | Unchanged |
| Norges Bank | 110,649 | $2.52M | 0.00% | −114,324−50.8% | Reduced |
| DAFNA Capital Management LLC | 107,412 | $2.45M | 0.65% | +107,412 | New |
| Alliancebernstein L.P. | 104,142 | $2.38M | 0.00% | +47,342+83.3% | Added |
| PDT Partners, LLC | 102,063 | $2.33M | 0.17% | +9,563+10.3% | Added |
| Alps Advisors Inc | 99,127 | $2.26M | 0.02% | −5,132−4.9% | Reduced |
| Citigroup Inc | 96,507 | $2.20M | 0.00% | −54,737−36.2% | Reduced |
| Jane Street Group, LLC | 87,404 | $2.00M | 0.01% | +33,615+62.5% | Added |
| State of Wisconsin Investment Board | 86,900 | $1.98M | 0.00% | +24,600+39.5% | Added |
| Squarepoint Ops LLC | 84,674 | $1.93M | 0.01% | +84,674 | New |
| Ghost Tree Capital, LLC | 80,000 | $1.83M | 0.60% | +80,000 | New |
| SG Americas Securities, LLC | 79,242 | $1.81M | 0.01% | +79,242 | New |
| Parametric Portfolio Associates LLC | 78,230 | $1.78M | 0.00% | +39,196+100.4% | Added |
| Dimensional Fund Advisors LP | 76,070 | $1.74M | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 74,053 | $1.69M | 0.00% | −5,368−6.8% | Reduced |
| Cubist Systematic Strategies, LLC | 73,651 | $1.68M | 0.02% | +58,697+392.5% | Added |
| Barclays PLC | 73,395 | $1.68M | 0.00% | +16,182+28.3% | Added |
| Platinum Investment Management Ltd | 65,380 | $1.49M | 0.04% | −14,504−18.2% | Reduced |
| Deutsche Bank AG | 62,700 | $1.43M | 0.00% | −59,337−48.6% | Reduced |
| Ameriprise Financial Inc | 61,328 | $1.40M | 0.00% | +5,170+9.2% | Added |
| Rhumbline Advisers | 60,625 | $1.38M | 0.00% | +2,548+4.4% | Added |
| Alkeon Capital Management LLC | 60,000 | $1.37M | 0.00% | 00.0% | Unchanged |
| TD Asset Management Inc | 59,857 | $1.37M | 0.00% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 57,695 | $1.32M | 0.00% | −3,344−5.5% | Reduced |
| Gsa Capital Partners LLP | 51,730 | $1.18M | 0.12% | +24,703+91.4% | Added |
| Jackson Creek Investment Advisors LLC | 48,166 | $1.10M | 0.41% | +48,166 | New |
| Legal & General Group Plc | 48,137 | $1.10M | 0.00% | +2,715+6.0% | Added |
| Wells Fargo & Company | 43,323 | $989.0K | 0.00% | +40,406+1,385.2% | Added |
| HRT Financial LP | 42,578 | $971.0K | 0.01% | +42,578 | New |
| New York State Common Retirement Fund | 41,573 | $949.0K | 0.00% | −8,220−16.5% | Reduced |
| Jump Financial, LLC | 41,500 | $947.0K | 0.07% | +41,500 | New |
| Duality Advisers, LP | 40,393 | $922.0K | 0.07% | +40,393 | New |
| D. E. Shaw & Co., Inc. | 38,548 | $880.0K | 0.00% | +471+1.2% | Added |
| Credit Suisse AG | 37,582 | $857.0K | 0.00% | +3,332+9.7% | Added |
| Truist Financial Corp | 34,624 | $791.0K | 0.00% | +11,318+48.6% | Added |
| AQR Capital Management LLC | 34,539 | $788.0K | 0.00% | +34,539 | New |
| American International Group, Inc. | 31,970 | $730.0K | 0.00% | −310−1.0% | Reduced |
| Vontobel Holding Ltd. | 32,000 | $730.0K | 0.01% | +2,000+6.7% | Added |
| Manufacturers Life Insurance Company, The | 31,133 | $710.0K | 0.00% | −2,471−7.4% | Reduced |
| Engineers Gate Manager LP | 29,872 | $682.0K | 0.04% | +29,872 | New |
| Invesco Ltd. | 28,545 | $651.0K | 0.00% | +4,321+17.8% | Added |
| BNP Paribas Arbitrage, SA | 28,162 | $642.7K | 0.00% | +8,375+42.3% | Added |
| Principal Financial Group Inc | 28,064 | $641.0K | 0.00% | +9,691+52.7% | Added |
| Prosight Management, LP | 27,378 | $625.0K | 0.37% | +27,378 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 26,676 | $609.0K | 0.00% | +26,676 | New |
| State Board of Administration of Florida Retirement System | 26,256 | $599.0K | 0.00% | 00.0% | Unchanged |
| ProShare Advisors LLC | 24,764 | $565.0K | 0.00% | −4,513−15.4% | Reduced |
| AXA S.A. | 24,300 | $555.0K | 0.00% | +24,300 | New |
| Oppenheimer & Co Inc | 24,100 | $550.0K | 0.01% | 00.0% | Unchanged |
| Voya Investment Management LLC | 22,788 | $520.0K | 0.00% | 00.0% | Unchanged |
| DekaBank Deutsche Girozentrale | 22,200 | $520.0K | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 22,698 | $518.0K | 0.01% | +15,847+231.3% | Added |
| First Manhattan Co | 22,610 | $515.0K | 0.00% | 00.0% | Unchanged |
| IndexIQ Advisors LLC | 22,324 | $509.0K | 0.02% | +2,236+11.1% | Added |
| Stifel Financial Corp | 20,680 | $472.0K | 0.00% | −1,000−4.6% | Reduced |
| MetLife Investment Management | 20,549 | $468.9K | 0.00% | +1,832+9.8% | Added |
| Schonfeld Strategic Advisors LLC | 18,800 | $429.0K | 0.00% | −5,100−21.3% | Reduced |
| Handelsbanken Fonder AB | 16,800 | $383.0K | 0.00% | 00.0% | Unchanged |
| Walleye Capital LLC | 15,554 | $355.0K | 0.01% | +15,554 | New |
| SEI Investments Co | 15,500 | $354.0K | 0.00% | +15,500 | New |
| Tudor Investment Corp Et Al | 15,214 | $347.0K | 0.01% | +3,769+32.9% | Added |
| Metropolitan Life Insurance Co | 15,133 | $345.3K | 0.01% | 00.0% | Unchanged |