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 |
|---|---|---|---|---|---|
| D.A. Davidson & Co. | 15,000 | $342.0K | 0.00% | +15,000 | New |
| Arizona State Retirement System | 14,123 | $322.0K | 0.00% | +61+0.4% | Added |
| Simplex Trading, LLC | 13,521 | $303.0K | 0.01% | −300−2.2% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 10,868 | $248.0K | 0.00% | +1,230+12.8% | Added |
| Tower Research Capital LLC (TRC) | 10,661 | $243.0K | 0.01% | +2,263+26.9% | Added |
| Amalgamated Bank | 10,388 | $237.0K | 0.00% | −491−4.5% | Reduced |
| Virtus ETF Advisers LLC | 10,039 | $229.0K | 0.10% | −517−4.9% | Reduced |
| Dark Forest Capital Management LP | 9,096 | $208.0K | 0.07% | +9,089+129,842.9% | Added |
| STRS Ohio | 8,000 | $182.0K | 0.00% | +8,000 | New |
| Public Employees Retirement Association of Colorado | 7,914 | $181.0K | 0.00% | 00.0% | Unchanged |
| Cutler Group LP | 6,711 | $153.0K | 0.01% | +5,011+294.8% | Added |
| Royal Bank of Canada | 6,013 | $138.0K | 0.00% | +747+14.2% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 5,374 | $123.0K | 0.00% | 00.0% | Unchanged |
| Point72 Hong Kong Ltd | 4,843 | $111.0K | 0.01% | +3,590+286.5% | Added |
| Ameritas Investment Partners, Inc. | 4,559 | $104.0K | 0.00% | 00.0% | Unchanged |
| Amundi | 3,892 | $89.0K | 0.00% | +3,892 | New |
| O'Shaughnessy Asset Management, LLC | 3,281 | $75.0K | 0.00% | +3,281 | New |
| Rockefeller Capital Management L.P. | 3,004 | $68.0K | 0.00% | +1,004+50.2% | Added |
| Great West Life Assurance Co | 2,855 | $66.0K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 2,450 | $56.0K | 0.00% | 00.0% | Unchanged |
| Meeder Asset Management Inc | 2,208 | $51.0K | 0.00% | −1,646−42.7% | Reduced |
| Penserra Capital Management LLC | 1,850 | $42.0K | 0.00% | +35+1.9% | Added |
| US Bancorp | 1,786 | $41.0K | 0.00% | −182−9.2% | Reduced |
| FourThought Financial, LLC | 1,613 | $36.0K | 0.00% | +92+6.0% | Added |
| Macquarie Group Ltd | 1,405 | $32.0K | 0.00% | 00.0% | Unchanged |
| Mark Sheptoff Financial Planning, LLC | 900 | $21.0K | 0.01% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 834 | $19.0K | 0.00% | −2,136−71.9% | Reduced |
| Bamco Inc | 700 | $16.0K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 551 | $13.0K | 0.00% | +286+107.9% | Added |
| Federation des caisses Desjardins du Quebec | 415 | $9.47K | 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 |
| Harbour Investments, Inc. | 205 | $5.00K | 0.00% | 00.0% | Unchanged |
| Aspire Private Capital, LLC | 200 | $5.00K | 0.00% | 00.0% | Unchanged |
| TCI Wealth Advisors, Inc. | 142 | $3.00K | 0.00% | 00.0% | Unchanged |
| Exane Derivatives | 117 | $2.67K | 0.00% | 00.0% | Unchanged |
| Brewin Dolphin Ltd | 91 | $2.08K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 108 | $2.00K | 0.00% | 00.0% | Unchanged |
| Bellevue Asset Management, LLC | 78 | $2.00K | 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 |
| Solstein Capital, LLC | 18 | $0 | 0.00% | 00.0% | Unchanged |
| Ikarian Capital, LLC | 0 | $0 | 0.00% | −674,723−100.0% | Sold out |
| OrbiMed Advisors LLC | 0 | $0 | 0.00% | −611,478−100.0% | Sold out |
| Bridger Management, LLC | 0 | $0 | 0.00% | −203,900−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −77,811−100.0% | Sold out |
| First Trust Advisors LP | 0 | $0 | 0.00% | −58,304−100.0% | Sold out |
| Belvedere Trading LLC | 0 | $0 | 0.00% | −24,711−100.0% | Sold out |
| Integral Health Asset Management, LLC | 0 | $0 | 0.00% | −35,000−100.0% | Sold out |
| Blueshift Asset Management, LLC | 0 | $0 | 0.00% | −18,675−100.0% | Sold out |
| Thrivent Financial for Lutherans | 0 | $0 | 0.00% | −18,587−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −14,923−100.0% | Sold out |
| EPIQ Capital Group, LLC | 0 | $0 | 0.00% | −10,687−100.0% | Sold out |
| Vident Investment Advisory, LLC | 0 | $0 | 0.00% | −10,124−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −9,901−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −124−100.0% | Sold out |
| CWM, LLC | – | – | – | – | Not filed |