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 |
|---|---|---|---|---|---|
| Jane Street Group, LLC | 256,551 | $315.6K | 0.00% | +11,618+4.7% | Added |
| Millennium Management LLC | 264,816 | $325.7K | 0.00% | +190,131+254.6% | Added |
| Boothbay Fund Management, LLC | 274,360 | $337.5K | 0.01% | −19,796−6.7% | Reduced |
| Walleye Capital LLC | 305,601 | $375.9K | 0.00% | +158,922+108.3% | Added |
| Goldman Sachs Group Inc | 312,145 | $383.9K | 0.00% | −96,931−23.7% | Reduced |
| Almitas Capital LLC | 321,568 | $395.5K | 0.13% | +36,723+12.9% | Added |
| Bank of America Corp | 337,982 | $415.7K | 0.00% | +19,334+6.1% | Added |
| New Leaf Venture Partners, L.L.C. | 339,569 | $417.7K | 0.93% | 00.0% | Unchanged |
| Morgan Stanley | 346,707 | $426.4K | 0.00% | −303,834−46.7% | Reduced |
| Panagora Asset Management Inc | 366,545 | $450.9K | 0.00% | −2,534−0.7% | Reduced |
| ADAR1 Capital Management, LLC | 380,330 | $467.8K | 0.09% | +12,000+3.3% | Added |
| Two Sigma Advisers, LP | 392,900 | $483.3K | 0.00% | −37,000−8.6% | Reduced |
| Diadema Partners LP | 456,546 | $561.6K | 0.45% | +217,527+91.0% | Added |
| D. E. Shaw & Co., Inc. | 469,301 | $577.2K | 0.00% | +100,324+27.2% | Added |
| Dimensional Fund Advisors LP | 489,334 | $602.1K | 0.00% | −392,786−44.5% | Reduced |
| AQR Capital Management LLC | 492,592 | $605.9K | 0.00% | −70,344−12.5% | Reduced |
| Vestal Point Capital, LP | 504,540 | $620.6K | 0.04% | +504,540 | New |
| Eversept Partners, LP | 617,418 | $759.4K | 0.09% | +417,323+208.6% | Added |
| Charles Schwab Investment Management Inc | 624,730 | $768.4K | 0.00% | −18,726−2.9% | Reduced |
| Price T Rowe Associates Inc | 676,313 | $832.0K | 0.00% | −69,775−9.4% | Reduced |
| Northern Trust Corp | 697,229 | $857.6K | 0.00% | −62,645−8.2% | Reduced |
| Franklin Resources Inc | 834,270 | $1.03M | 0.00% | −96,264−10.3% | Reduced |
| Sio Capital Management, LLC | 837,159 | $1.03M | 0.31% | +221,531+36.0% | Added |
| DAFNA Capital Management LLC | 912,928 | $1.12M | 0.32% | 00.0% | Unchanged |
| Ikarian Capital, LLC | 950,000 | $1.17M | 0.38% | 00.0% | Unchanged |
| 5AM Venture Management, LLC | 995,841 | $1.22M | 0.46% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 1,033,855 | $1.27M | 0.00% | +118,117+12.9% | Added |
| Deerfield Management Company, L.P. (Series C) | 1,055,192 | $1.30M | 0.03% | −11,770−1.1% | Reduced |
| Deutsche Bank AG | 1,101,547 | $1.35M | 0.00% | −4,740−0.4% | Reduced |
| Euclidean Capital LLC | 1,307,858 | $1.61M | 0.60% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 1,334,032 | $1.64M | 0.01% | +274,341+25.9% | Added |
| Acadian Asset Management LLC | 1,440,661 | $1.77M | 0.00% | +410,205+39.8% | Added |
| JPMorgan Chase & Co | 1,486,149 | $1.83M | 0.00% | −156,421−9.5% | Reduced |
| State Street Corp | 1,640,262 | $2.02M | 0.00% | −209,033−11.3% | Reduced |
| Geode Capital Management, LLC | 1,962,098 | $2.41M | 0.00% | +47,848+2.5% | Added |
| Merck & Co., Inc. | 3,545,719 | $4.36M | 2.65% | 00.0% | Unchanged |
| Vanguard Group Inc | 6,053,041 | $7.45M | 0.00% | +436,662+7.8% | Added |
| BlackRock, Inc. | 8,279,702 | $10.2M | 0.00% | −857,045−9.4% | Reduced |
| Ra Capital Management, L.P. | 9,695,228 | $11.9M | 0.20% | 00.0% | Unchanged |
| FMR LLC | 14,390,239 | $17.7M | 0.00% | −299,626−2.0% | Reduced |
| Nuveen, LLC | 138,180 | – | – | +138,180 | New |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −160,570−100.0% | Sold out |
| Nordea Investment Management AB | 0 | $0 | 0.00% | −165,713−100.0% | Sold out |
| Jupiter Asset Management Ltd | 0 | $0 | 0.00% | −134,789−100.0% | Sold out |
| Swiss National Bank | 0 | $0 | 0.00% | −131,900−100.0% | Sold out |
| Aristides Capital LLC | 0 | $0 | 0.00% | −106,600−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −82,499−100.0% | Sold out |
| American Century Companies Inc | 0 | $0 | 0.00% | −56,735−100.0% | Sold out |
| UBS Oconnor LLC | 0 | $0 | 0.00% | −50,000−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −36,775−100.0% | Sold out |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0 | $0 | 0.00% | −28,084−100.0% | Sold out |
| Rpo LLC | 0 | $0 | 0.00% | −26,395−100.0% | Sold out |
| Janus Henderson Group PLC | 0 | $0 | 0.00% | −23,340−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −20,554−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −19,953−100.0% | Sold out |
| Arizona State Retirement System | 0 | $0 | 0.00% | −19,772−100.0% | Sold out |
| NEOS Investment Management LLC | 0 | $0 | 0.00% | −14,344−100.0% | Sold out |
| Tema ETFs LLC | 0 | $0 | 0.00% | −14,344−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −10,383−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −10,346−100.0% | Sold out |
| KLP Kapitalforvaltning AS | 0 | $0 | 0.00% | −8,500−100.0% | Sold out |
| Public Employees Retirement Association of Colorado | 0 | $0 | 0.00% | −7,914−100.0% | Sold out |
| Great West Life Assurance Co | 0 | $0 | 0.00% | −7,785−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −5,468−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −4,794−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −1,980−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −373−100.0% | Sold out |
| Sandy Spring Bank | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |