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 |
|---|---|---|---|---|---|
| State of Wisconsin Investment Board | 129,033 | $1.03M | 0.00% | −18,711−12.7% | Reduced |
| Point72 Asset Management, L.P. | 139,000 | $1.11M | 0.00% | −599,782−81.2% | Reduced |
| Acadian Asset Management LLC | 142,711 | $1.14M | 0.00% | −10,555−6.9% | Reduced |
| Stifel Financial Corp | 145,759 | $1.16M | 0.00% | +119,609+457.4% | Added |
| Verition Fund Management LLC | 146,445 | $1.17M | 0.01% | −20,559−12.3% | Reduced |
| Cubist Systematic Strategies, LLC | 162,829 | $1.30M | 0.02% | +153,212+1,593.1% | Added |
| Alphabet Inc. | 175,866 | $1.40M | 0.07% | 00.0% | Unchanged |
| UBS Group AG | 178,692 | $1.43M | 0.00% | +99,010+124.3% | Added |
| D. E. Shaw & Co., Inc. | 184,147 | $1.47M | 0.00% | +65,129+54.7% | Added |
| Nordea Investment Management AB | 190,290 | $1.50M | 0.00% | −12,417−6.1% | Reduced |
| Rafferty Asset Management, LLC | 190,911 | $1.52M | 0.01% | +4,287+2.3% | Added |
| Two Sigma Investments, LP | 192,547 | $1.54M | 0.00% | +90,116+88.0% | Added |
| Medici Capital LLC | 192,747 | $1.54M | 2.04% | +133,093+223.1% | Added |
| Barclays PLC | 193,228 | $1.54M | 0.00% | +54,402+39.2% | Added |
| Bank of New York Mellon Corp | 209,052 | $1.67M | 0.00% | −22,943−9.9% | Reduced |
| Jupiter Asset Management Ltd | 232,219 | $1.85M | 0.02% | 00.0% | Unchanged |
| Millennium Management LLC | 235,635 | $1.88M | 0.00% | −121,130−34.0% | Reduced |
| Panagora Asset Management Inc | 236,645 | $1.89M | 0.01% | −56,889−19.4% | Reduced |
| HRT Financial LP | 239,116 | $1.91M | 0.01% | +45,822+23.7% | Added |
| Campbell & CO Investment Adviser LLC | 240,625 | $1.92M | 0.17% | +240,625 | New |
| Walleye Capital LLC | 262,126 | $2.09M | 0.03% | +262,126 | New |
| Goldman Sachs Group Inc | 285,893 | $2.28M | 0.00% | +37,674+15.2% | Added |
| New Leaf Venture Partners, L.L.C. | 339,569 | $2.71M | 2.18% | 00.0% | Unchanged |
| Baillie Gifford & Co | 345,924 | $2.76M | 0.00% | −22,048−6.0% | Reduced |
| Two Sigma Advisers, LP | 393,100 | $3.14M | 0.01% | +4,100+1.1% | Added |
| Nuveen Asset Management, LLC | 432,691 | $3.45M | 0.00% | +1,145+0.3% | Added |
| Bank of America Corp | 440,315 | $3.51M | 0.00% | +15,702+3.7% | Added |
| Alliancebernstein L.P. | 492,285 | $3.93M | 0.00% | +162,664+49.3% | Added |
| Charles Schwab Investment Management Inc | 499,529 | $3.99M | 0.00% | +17,307+3.6% | Added |
| Renaissance Technologies LLC | 571,983 | $4.56M | 0.01% | +69,780+13.9% | Added |
| DAFNA Capital Management LLC | 609,905 | $4.87M | 1.17% | −19,033−3.0% | Reduced |
| Northern Trust Corp | 614,556 | $4.90M | 0.00% | −21,509−3.4% | Reduced |
| Dimensional Fund Advisors LP | 764,394 | $6.10M | 0.00% | +83,169+12.2% | Added |
| Jacobs Levy Equity Management, Inc | 794,284 | $6.34M | 0.03% | +16,207+2.1% | Added |
| Franklin Resources Inc | 959,524 | $7.66M | 0.00% | +3620.0% | Added |
| Deerfield Management Company, L.P. (Series C) | 1,067,810 | $8.52M | 0.16% | +12,618+1.2% | Added |
| Price T Rowe Associates Inc | 1,201,549 | $9.59M | 0.00% | +54,582+4.8% | Added |
| Euclidean Capital LLC | 1,307,858 | $10.4M | 1.17% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 1,381,786 | $11.0M | 0.00% | +78,709+6.0% | Added |
| JPMorgan Chase & Co | 1,863,998 | $14.9M | 0.00% | −424,371−18.5% | Reduced |
| Deutsche Bank AG | 2,062,099 | $16.5M | 0.01% | +2,028,862+6,104.2% | Added |
| State Street Corp | 3,117,529 | $24.9M | 0.00% | +280,822+9.9% | Added |
| Braidwell LP | 3,324,308 | $26.5M | 0.97% | −749,812−18.4% | Reduced |
| EcoR1 Capital, LLC | 4,056,548 | $32.4M | 0.84% | 00.0% | Unchanged |
| Vanguard Group Inc | 4,386,541 | $35.0M | 0.00% | −1,134,367−20.5% | Reduced |
| Morgan Stanley | 4,650,191 | $37.1M | 0.00% | +1,312,805+39.3% | Added |
| BlackRock Inc. | 8,068,553 | $64.4M | 0.00% | +337,575+4.4% | Added |
| FMR LLC | 12,620,404 | $100.7M | 0.01% | +448,359+3.7% | Added |
| Baker Bros. Advisors LP | 0 | $0 | 0.00% | −964,851−100.0% | Sold out |
| Susquehanna Fundamental Investments, LLC | 0 | $0 | 0.00% | −59,563−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −21,783−100.0% | Sold out |
| Bailard, Inc. | 0 | $0 | 0.00% | −18,300−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −17,556−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −7,960−100.0% | Sold out |
| Hershey Trust Co | 0 | $0 | 0.00% | −5,143−100.0% | Sold out |
| Bessemer Group Inc | 0 | $0 | 0.00% | −3,061−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −444−100.0% | Sold out |
| EverSource Wealth Advisors, LLC | 0 | $0 | 0.00% | −225−100.0% | Sold out |
| Beaird Harris Wealth Management, LLC | 0 | $0 | 0.00% | −157−100.0% | Sold out |
| Allworth Financial LP | 0 | $0 | 0.00% | −61−100.0% | Sold out |
| Authentikos Wealth Advisory, LLC | 0 | $0 | 0.00% | −24−100.0% | Sold out |
| Assetmark, Inc | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Capital Advisors, Ltd. LLC | 0 | $0 | 0.00% | −73−100.0% | Sold out |
| Virginia Retirement Systems Et Al | – | – | – | – | Not filed |