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, Q1 2025
Institutional positions in Alector, Inc. as of Mar 31, 2025. 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
- 141
- −8 vs. Q4 2024
- Shares held
- 72.6M
- −651.5K (−0.9%) vs. Q4 2024
- Total value
- $89.1M
- −$49.3M (−35.6%) vs. Q4 2024
- New holders
- 20
- 45 more added
- Sold out
- 28
- 34 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Alector, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 14,390,239 | $17.7M | 0.00% | −299,626−2.0% | Reduced |
| Ra Capital Management, L.P. | 9,695,228 | $11.9M | 0.20% | 00.0% | Unchanged |
| BlackRock, Inc. | 8,279,702 | $10.2M | 0.00% | −857,045−9.4% | Reduced |
| Vanguard Group Inc | 6,053,041 | $7.45M | 0.00% | +436,662+7.8% | Added |
| Merck & Co., Inc. | 3,545,719 | $4.36M | 2.65% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 1,962,098 | $2.41M | 0.00% | +47,848+2.5% | Added |
| State Street Corp | 1,640,262 | $2.02M | 0.00% | −209,033−11.3% | Reduced |
| JPMorgan Chase & Co | 1,486,149 | $1.83M | 0.00% | −156,421−9.5% | Reduced |
| Acadian Asset Management LLC | 1,440,661 | $1.77M | 0.00% | +410,205+39.8% | Added |
| Jacobs Levy Equity Management, Inc | 1,334,032 | $1.64M | 0.01% | +274,341+25.9% | Added |
| Euclidean Capital LLC | 1,307,858 | $1.61M | 0.60% | 00.0% | Unchanged |
| Deutsche Bank AG | 1,101,547 | $1.35M | 0.00% | −4,740−0.4% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 1,055,192 | $1.30M | 0.03% | −11,770−1.1% | Reduced |
| Renaissance Technologies LLC | 1,033,855 | $1.27M | 0.00% | +118,117+12.9% | Added |
| 5AM Venture Management, LLC | 995,841 | $1.22M | 0.46% | 00.0% | Unchanged |
| Ikarian Capital, LLC | 950,000 | $1.17M | 0.38% | 00.0% | Unchanged |
| DAFNA Capital Management LLC | 912,928 | $1.12M | 0.32% | 00.0% | Unchanged |
| Sio Capital Management, LLC | 837,159 | $1.03M | 0.31% | +221,531+36.0% | Added |
| Franklin Resources Inc | 834,270 | $1.03M | 0.00% | −96,264−10.3% | Reduced |
| Northern Trust Corp | 697,229 | $857.6K | 0.00% | −62,645−8.2% | Reduced |
| Price T Rowe Associates Inc | 676,313 | $832.0K | 0.00% | −69,775−9.4% | Reduced |
| Charles Schwab Investment Management Inc | 624,730 | $768.4K | 0.00% | −18,726−2.9% | Reduced |
| Eversept Partners, LP | 617,418 | $759.4K | 0.09% | +417,323+208.6% | Added |
| Vestal Point Capital, LP | 504,540 | $620.6K | 0.04% | +504,540 | New |
| AQR Capital Management LLC | 492,592 | $605.9K | 0.00% | −70,344−12.5% | Reduced |
| Dimensional Fund Advisors LP | 489,334 | $602.1K | 0.00% | −392,786−44.5% | Reduced |
| D. E. Shaw & Co., Inc. | 469,301 | $577.2K | 0.00% | +100,324+27.2% | Added |
| Diadema Partners LP | 456,546 | $561.6K | 0.45% | +217,527+91.0% | Added |
| Two Sigma Advisers, LP | 392,900 | $483.3K | 0.00% | −37,000−8.6% | Reduced |
| ADAR1 Capital Management, LLC | 380,330 | $467.8K | 0.09% | +12,000+3.3% | Added |
| Panagora Asset Management Inc | 366,545 | $450.9K | 0.00% | −2,534−0.7% | Reduced |
| Morgan Stanley | 346,707 | $426.4K | 0.00% | −303,834−46.7% | Reduced |
| New Leaf Venture Partners, L.L.C. | 339,569 | $417.7K | 0.93% | 00.0% | Unchanged |
| Bank of America Corp | 337,982 | $415.7K | 0.00% | +19,334+6.1% | Added |
| Almitas Capital LLC | 321,568 | $395.5K | 0.13% | +36,723+12.9% | Added |
| Goldman Sachs Group Inc | 312,145 | $383.9K | 0.00% | −96,931−23.7% | Reduced |
| Walleye Capital LLC | 305,601 | $375.9K | 0.00% | +158,922+108.3% | Added |
| Boothbay Fund Management, LLC | 274,360 | $337.5K | 0.01% | −19,796−6.7% | Reduced |
| Millennium Management LLC | 264,816 | $325.7K | 0.00% | +190,131+254.6% | Added |
| Jane Street Group, LLC | 256,551 | $315.6K | 0.00% | +11,618+4.7% | Added |
| Susquehanna International Group, LLP | 253,119 | $311.3K | 0.00% | +53,357+26.7% | Added |
| Bank of New York Mellon Corp | 249,494 | $306.9K | 0.00% | +18,765+8.1% | Added |
| Two Sigma Investments, LP | 214,425 | $263.7K | 0.00% | −193,564−47.4% | Reduced |
| State of Wyoming | 196,814 | $242.1K | 0.03% | +196,814 | New |
| Alphabet Inc. | 175,866 | $216.3K | 0.01% | 00.0% | Unchanged |
| Medici Capital LLC | 167,191 | $205.6K | 0.25% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 157,309 | $193.5K | 0.00% | −8,280−5.0% | Reduced |
| Invesco Ltd. | 148,576 | $182.7K | 0.00% | +100,591+209.6% | Added |
| Los Angeles Capital Management LLC | 144,296 | $177.5K | 0.00% | +53,560+59.0% | Added |
| Susquehanna Fundamental Investments, LLC | 137,904 | $169.6K | 0.00% | −7,133−4.9% | Reduced |
| Barclays PLC | 125,086 | $153.9K | 0.00% | −51,483−29.2% | Reduced |
| Manufacturers Life Insurance Company, The | 123,892 | $152.4K | 0.00% | +916+0.7% | Added |
| Rhumbline Advisers | 116,635 | $143.4K | 0.00% | +740+0.6% | Added |
| TD Asset Management Inc | 111,738 | $137.4K | 0.00% | 00.0% | Unchanged |
| Sphera Funds Management Ltd. | 109,208 | $134.3K | 0.03% | −215,431−66.4% | Reduced |
| Persistent Asset Partners Ltd | 104,927 | $129.1K | 0.11% | +104,927 | New |
| DekaBank Deutsche Girozentrale | 100,000 | $127.0K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 102,600 | $126.2K | 0.00% | 00.0% | Unchanged |
| Cercano Management LLC | 93,633 | $115.2K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 83,046 | $102.1K | 0.00% | −35,064−29.7% | Reduced |
| Alliancebernstein L.P. | 82,100 | $101.0K | 0.00% | 00.0% | Unchanged |
| Ieq Capital, LLC | 80,406 | $98.9K | 0.00% | +80,406 | New |
| Alps Advisors Inc | 74,933 | $92.2K | 0.00% | −4,182−5.3% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 74,648 | $91.8K | 0.00% | +1,495+2.0% | Added |
| Citigroup Inc | 62,756 | $77.2K | 0.00% | −7,017−10.1% | Reduced |
| Spears Abacus Advisors LLC | 61,613 | $75.8K | 0.00% | 00.0% | Unchanged |
| Intech Investment Management LLC | 60,751 | $74.7K | 0.00% | +25,369+71.7% | Added |
| SG Americas Securities, LLC | 60,248 | $74.0K | 0.00% | +20,914+53.2% | Added |
| HSBC Holdings PLC | 58,072 | $72.9K | 0.00% | +89+0.2% | Added |
| Squarepoint Ops LLC | 59,214 | $72.8K | 0.00% | +46,100+351.5% | Added |
| Marshall Wace, LLP | 59,099 | $72.7K | 0.00% | +10,651+22.0% | Added |
| Velan Capital Investment Management LP | 55,000 | $67.7K | 0.07% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 53,421 | $65.7K | 0.00% | −2,818−5.0% | Reduced |
| Utah Retirement Systems | 51,430 | $63.3K | 0.00% | 00.0% | Unchanged |
| Algert Global LLC | 44,460 | $54.7K | 0.00% | 00.0% | Unchanged |
| Cerity Partners LLC | 41,564 | $51.1K | 0.00% | +41,564 | New |
| Graham Capital Management, L.P. | 41,098 | $50.6K | 0.00% | +41,098 | New |
| Tudor Investment Corp Et Al | 40,796 | $50.2K | 0.00% | 00.0% | Unchanged |
| Corebridge Financial, Inc. | 40,171 | $49.4K | 0.00% | +48+0.1% | Added |
| Wells Fargo & Company | 39,435 | $48.5K | 0.00% | +1,469+3.9% | Added |
| JustInvest LLC | 34,925 | $43.0K | 0.00% | +21,819+166.5% | Added |
| CWM, LLC | 33,643 | $41.0K | 0.00% | +26,495+370.7% | Added |
| XTX Topco Ltd | 32,571 | $40.1K | 0.00% | −18,400−36.1% | Reduced |
| Jasper Ridge Partners, L.P. | 30,632 | $37.7K | 0.00% | 00.0% | Unchanged |
| Vontobel Holding Ltd. | 30,000 | $36.9K | 0.00% | +5,000+20.0% | Added |
| Blackstone Group Inc. | 25,715 | $31.6K | 0.00% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 25,570 | $31.5K | 0.00% | 00.0% | Unchanged |
| Apollon Wealth Management, LLC | 25,000 | $30.8K | 0.00% | 00.0% | Unchanged |
| Voya Investment Management LLC | 24,621 | $30.3K | 0.00% | −1,145−4.4% | Reduced |
| Tower Research Capital LLC (TRC) | 22,670 | $27.9K | 0.00% | +8,000+54.5% | Added |
| ProShare Advisors LLC | 22,221 | $27.3K | 0.00% | −5,146−18.8% | Reduced |
| Shell Asset Management Co | 20,627 | $25.0K | 0.00% | −866−4.0% | Reduced |
| Erste Asset Management GmbH | 19,000 | $24.5K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 19,875 | $24.4K | 0.00% | −890−4.3% | Reduced |
| Dynamic Technology Lab Private Ltd | 19,539 | $24.0K | 0.00% | +19,539 | New |
| CIBC World Markets Corp | 18,195 | $22.4K | 0.00% | +18,195 | New |
| Police & Firemen's Retirement System of New Jersey | 17,004 | $20.9K | 0.00% | 00.0% | Unchanged |
| SEI Investments Co | 16,884 | $20.8K | 0.00% | +16,884 | New |
| Diversified Trust Co | 14,102 | $17.3K | 0.00% | 00.0% | Unchanged |
| Wealth Enhancement Advisory Services, LLC | 13,678 | $16.8K | 0.00% | +2,638+23.9% | Added |