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 |
|---|---|---|---|---|---|
| Solstein Capital, LLC | 18 | $0 | 0.00% | 00.0% | Unchanged |
| Salem Investment Counselors Inc | 50 | $1.00K | 0.00% | 00.0% | Unchanged |
| Investors Research Corp | 40 | $1.00K | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 50 | $1.00K | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 39 | $1.00K | 0.00% | +29+290.0% | Added |
| Signaturefd, LLC | 108 | $2.00K | 0.00% | 00.0% | Unchanged |
| Bellevue Asset Management, LLC | 78 | $2.00K | 0.00% | 00.0% | Unchanged |
| Brewin Dolphin Ltd | 91 | $2.08K | 0.00% | 00.0% | Unchanged |
| Exane Derivatives | 117 | $2.67K | 0.00% | 00.0% | Unchanged |
| TCI Wealth Advisors, Inc. | 142 | $3.00K | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 205 | $5.00K | 0.00% | 00.0% | Unchanged |
| Aspire Private Capital, LLC | 200 | $5.00K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 277 | $6.00K | 0.00% | +128+85.9% | Added |
| The PNC Financial Services Group, Inc. | 298 | $6.00K | 0.00% | +242+432.1% | Added |
| State of Wyoming | 273 | $6.00K | 0.00% | +252+1,200.0% | Added |
| Federation des caisses Desjardins du Quebec | 415 | $9.47K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 551 | $13.0K | 0.00% | +286+107.9% | Added |
| Bamco Inc | 700 | $16.0K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 834 | $19.0K | 0.00% | −2,136−71.9% | Reduced |
| Mark Sheptoff Financial Planning, LLC | 900 | $21.0K | 0.01% | 00.0% | Unchanged |
| Macquarie Group Ltd | 1,405 | $32.0K | 0.00% | 00.0% | Unchanged |
| FourThought Financial, LLC | 1,613 | $36.0K | 0.00% | +92+6.0% | Added |
| US Bancorp | 1,786 | $41.0K | 0.00% | −182−9.2% | Reduced |
| Penserra Capital Management LLC | 1,850 | $42.0K | 0.00% | +35+1.9% | Added |
| Meeder Asset Management Inc | 2,208 | $51.0K | 0.00% | −1,646−42.7% | Reduced |
| Nisa Investment Advisors, LLC | 2,450 | $56.0K | 0.00% | 00.0% | Unchanged |
| Great West Life Assurance Co | 2,855 | $66.0K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 3,004 | $68.0K | 0.00% | +1,004+50.2% | Added |
| O'Shaughnessy Asset Management, LLC | 3,281 | $75.0K | 0.00% | +3,281 | New |
| Amundi | 3,892 | $89.0K | 0.00% | +3,892 | New |
| Ameritas Investment Partners, Inc. | 4,559 | $104.0K | 0.00% | 00.0% | Unchanged |
| Point72 Hong Kong Ltd | 4,843 | $111.0K | 0.01% | +3,590+286.5% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 5,374 | $123.0K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 6,013 | $138.0K | 0.00% | +747+14.2% | Added |
| Cutler Group LP | 6,711 | $153.0K | 0.01% | +5,011+294.8% | Added |
| Public Employees Retirement Association of Colorado | 7,914 | $181.0K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 8,000 | $182.0K | 0.00% | +8,000 | New |
| Dark Forest Capital Management LP | 9,096 | $208.0K | 0.07% | +9,089+129,842.9% | Added |
| Virtus ETF Advisers LLC | 10,039 | $229.0K | 0.10% | −517−4.9% | Reduced |
| Amalgamated Bank | 10,388 | $237.0K | 0.00% | −491−4.5% | Reduced |
| Tower Research Capital LLC (TRC) | 10,661 | $243.0K | 0.01% | +2,263+26.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 10,868 | $248.0K | 0.00% | +1,230+12.8% | Added |
| Simplex Trading, LLC | 13,521 | $303.0K | 0.01% | −300−2.2% | Reduced |
| Arizona State Retirement System | 14,123 | $322.0K | 0.00% | +61+0.4% | Added |
| D.A. Davidson & Co. | 15,000 | $342.0K | 0.00% | +15,000 | New |
| Metropolitan Life Insurance Co | 15,133 | $345.3K | 0.01% | 00.0% | Unchanged |
| Tudor Investment Corp Et Al | 15,214 | $347.0K | 0.01% | +3,769+32.9% | Added |
| SEI Investments Co | 15,500 | $354.0K | 0.00% | +15,500 | New |
| Walleye Capital LLC | 15,554 | $355.0K | 0.01% | +15,554 | New |
| Handelsbanken Fonder AB | 16,800 | $383.0K | 0.00% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 18,800 | $429.0K | 0.00% | −5,100−21.3% | Reduced |
| MetLife Investment Management | 20,549 | $468.9K | 0.00% | +1,832+9.8% | Added |
| Stifel Financial Corp | 20,680 | $472.0K | 0.00% | −1,000−4.6% | Reduced |
| IndexIQ Advisors LLC | 22,324 | $509.0K | 0.02% | +2,236+11.1% | Added |
| First Manhattan Co | 22,610 | $515.0K | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 22,698 | $518.0K | 0.01% | +15,847+231.3% | Added |
| 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 |
| Oppenheimer & Co Inc | 24,100 | $550.0K | 0.01% | 00.0% | Unchanged |
| AXA S.A. | 24,300 | $555.0K | 0.00% | +24,300 | New |
| ProShare Advisors LLC | 24,764 | $565.0K | 0.00% | −4,513−15.4% | Reduced |
| State Board of Administration of Florida Retirement System | 26,256 | $599.0K | 0.00% | 00.0% | Unchanged |
| Connor, Clark & Lunn Investment Management Ltd. | 26,676 | $609.0K | 0.00% | +26,676 | New |
| Prosight Management, LP | 27,378 | $625.0K | 0.37% | +27,378 | New |
| Principal Financial Group Inc | 28,064 | $641.0K | 0.00% | +9,691+52.7% | Added |
| BNP Paribas Arbitrage, SA | 28,162 | $642.7K | 0.00% | +8,375+42.3% | Added |
| Invesco Ltd. | 28,545 | $651.0K | 0.00% | +4,321+17.8% | Added |
| Engineers Gate Manager LP | 29,872 | $682.0K | 0.04% | +29,872 | New |
| Manufacturers Life Insurance Company, The | 31,133 | $710.0K | 0.00% | −2,471−7.4% | Reduced |
| 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 |
| AQR Capital Management LLC | 34,539 | $788.0K | 0.00% | +34,539 | New |
| Truist Financial Corp | 34,624 | $791.0K | 0.00% | +11,318+48.6% | Added |
| Credit Suisse AG | 37,582 | $857.0K | 0.00% | +3,332+9.7% | Added |
| D. E. Shaw & Co., Inc. | 38,548 | $880.0K | 0.00% | +471+1.2% | Added |
| Duality Advisers, LP | 40,393 | $922.0K | 0.07% | +40,393 | New |
| Jump Financial, LLC | 41,500 | $947.0K | 0.07% | +41,500 | New |
| New York State Common Retirement Fund | 41,573 | $949.0K | 0.00% | −8,220−16.5% | Reduced |
| HRT Financial LP | 42,578 | $971.0K | 0.01% | +42,578 | New |
| Wells Fargo & Company | 43,323 | $989.0K | 0.00% | +40,406+1,385.2% | Added |
| Legal & General Group Plc | 48,137 | $1.10M | 0.00% | +2,715+6.0% | Added |
| Jackson Creek Investment Advisors LLC | 48,166 | $1.10M | 0.41% | +48,166 | New |
| Gsa Capital Partners LLP | 51,730 | $1.18M | 0.12% | +24,703+91.4% | Added |
| UBS Asset Management Americas Inc | 57,695 | $1.32M | 0.00% | −3,344−5.5% | Reduced |
| TD Asset Management Inc | 59,857 | $1.37M | 0.00% | 00.0% | Unchanged |
| Alkeon Capital Management LLC | 60,000 | $1.37M | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 60,625 | $1.38M | 0.00% | +2,548+4.4% | Added |
| Ameriprise Financial Inc | 61,328 | $1.40M | 0.00% | +5,170+9.2% | Added |
| Deutsche Bank AG | 62,700 | $1.43M | 0.00% | −59,337−48.6% | Reduced |
| Platinum Investment Management Ltd | 65,380 | $1.49M | 0.04% | −14,504−18.2% | Reduced |
| Barclays PLC | 73,395 | $1.68M | 0.00% | +16,182+28.3% | Added |
| Cubist Systematic Strategies, LLC | 73,651 | $1.68M | 0.02% | +58,697+392.5% | Added |
| California State Teachers Retirement System | 74,053 | $1.69M | 0.00% | −5,368−6.8% | Reduced |
| Dimensional Fund Advisors LP | 76,070 | $1.74M | 0.00% | 00.0% | Unchanged |
| Parametric Portfolio Associates LLC | 78,230 | $1.78M | 0.00% | +39,196+100.4% | Added |
| SG Americas Securities, LLC | 79,242 | $1.81M | 0.01% | +79,242 | New |
| Ghost Tree Capital, LLC | 80,000 | $1.83M | 0.60% | +80,000 | New |
| Squarepoint Ops LLC | 84,674 | $1.93M | 0.01% | +84,674 | New |
| State of Wisconsin Investment Board | 86,900 | $1.98M | 0.00% | +24,600+39.5% | Added |
| Jane Street Group, LLC | 87,404 | $2.00M | 0.01% | +33,615+62.5% | Added |