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 2024
Institutional positions in Alector, Inc. as of Dec 31, 2024. 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
- 150
- −8 vs. Q3 2024
- Shares held
- 73.4M
- +913.9K (+1.3%) vs. Q3 2024
- Total value
- $138.8M
- −$199.5M (−59.0%) vs. Q3 2024
- New holders
- 31
- 46 more added
- Sold out
- 39
- 38 more reduced
1 institution that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2024
Shares, value and share of portfolio for each institution holding Alector, Inc.; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 14,689,865 | $27.8M | 0.00% | +94,851+0.6% | Added |
| Ra Capital Management, L.P. | 9,695,228 | $18.3M | 0.24% | +9,695,228 | New |
| BlackRock, Inc. | 9,136,747 | $17.3M | 0.00% | −215,297−2.3% | Reduced |
| Vanguard Group Inc | 5,616,379 | $10.6M | 0.00% | +160,652+2.9% | Added |
| Merck & Co., Inc. | 3,545,719 | $6.70M | 2.60% | +3,545,719 | New |
| Geode Capital Management, LLC | 1,914,250 | $3.62M | 0.00% | +10,308+0.5% | Added |
| State Street Corp | 1,849,295 | $3.50M | 0.00% | −767,514−29.3% | Reduced |
| JPMorgan Chase & Co | 1,642,570 | $3.10M | 0.00% | −1,086,253−39.8% | Reduced |
| Euclidean Capital LLC | 1,307,858 | $2.47M | 0.34% | 00.0% | Unchanged |
| Deutsche Bank AG | 1,106,287 | $2.09M | 0.00% | −48,050−4.2% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 1,066,962 | $2.02M | 0.04% | +11,770+1.1% | Added |
| Jacobs Levy Equity Management, Inc | 1,059,691 | $2.00M | 0.01% | +42,004+4.1% | Added |
| Acadian Asset Management LLC | 1,030,456 | $1.94M | 0.01% | +290,221+39.2% | Added |
| 5AM Venture Management, LLC | 995,841 | $1.88M | 0.45% | +995,841 | New |
| Ikarian Capital, LLC | 950,000 | $1.80M | 0.51% | +950,000 | New |
| Franklin Resources Inc | 930,534 | $1.76M | 0.00% | −32,950−3.4% | Reduced |
| Renaissance Technologies LLC | 915,738 | $1.73M | 0.00% | +353,988+63.0% | Added |
| DAFNA Capital Management LLC | 912,928 | $1.73M | 0.44% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 882,120 | $1.67M | 0.00% | +157,231+21.7% | Added |
| Northern Trust Corp | 759,874 | $1.44M | 0.00% | +40,291+5.6% | Added |
| Price T Rowe Associates Inc | 746,088 | $1.41M | 0.00% | −70,370−8.6% | Reduced |
| Morgan Stanley | 650,541 | $1.23M | 0.00% | −3,705,229−85.1% | Reduced |
| Charles Schwab Investment Management Inc | 643,456 | $1.22M | 0.00% | −117,150−15.4% | Reduced |
| Sio Capital Management, LLC | 615,628 | $1.16M | 0.33% | +615,628 | New |
| AQR Capital Management LLC | 562,936 | $1.06M | 0.00% | +354,935+170.6% | Added |
| Two Sigma Advisers, LP | 429,900 | $812.5K | 0.00% | +35,000+8.9% | Added |
| Citadel Advisors LLC | 424,971 | $803.2K | 0.00% | +229,187+117.1% | Added |
| Goldman Sachs Group Inc | 409,076 | $773.2K | 0.00% | −102,217−20.0% | Reduced |
| Two Sigma Investments, LP | 407,989 | $771.1K | 0.00% | +145,467+55.4% | Added |
| Panagora Asset Management Inc | 369,079 | $697.6K | 0.00% | −13,330−3.5% | Reduced |
| D. E. Shaw & Co., Inc. | 368,977 | $697.4K | 0.00% | +177,985+93.2% | Added |
| ADAR1 Capital Management, LLC | 368,330 | $696.1K | 0.14% | −60,472−14.1% | Reduced |
| New Leaf Venture Partners, L.L.C. | 339,569 | $641.8K | 0.86% | 00.0% | Unchanged |
| Sphera Funds Management Ltd. | 324,639 | $613.6K | 0.11% | −295,361−47.6% | Reduced |
| Bank of America Corp | 318,648 | $602.2K | 0.00% | −44,252−12.2% | Reduced |
| Boothbay Fund Management, LLC | 294,156 | $556.0K | 0.02% | +294,156 | New |
| Almitas Capital LLC | 284,845 | $538.4K | 0.12% | +284,845 | New |
| Jane Street Group, LLC | 244,933 | $462.9K | 0.00% | +89,991+58.1% | Added |
| Diadema Partners LP | 239,019 | $451.7K | 0.51% | +239,019 | New |
| Bank of New York Mellon Corp | 230,729 | $436.1K | 0.00% | +4,620+2.0% | Added |
| Eversept Partners, LP | 200,095 | $378.2K | 0.04% | −132,661−39.9% | Reduced |
| Susquehanna International Group, LLP | 199,762 | $377.6K | 0.00% | +123,222+161.0% | Added |
| Nuveen Asset Management, LLC | 187,042 | $353.5K | 0.00% | −73,064−28.1% | Reduced |
| Barclays PLC | 176,569 | $333.7K | 0.00% | −231−0.1% | Reduced |
| Alphabet Inc. | 175,866 | $332.4K | 0.02% | 00.0% | Unchanged |
| Medici Capital LLC | 167,191 | $316.0K | 0.41% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 165,589 | $313.0K | 0.00% | +145,469+723.0% | Added |
| UBS Asset Management Americas Inc | 160,570 | $303.5K | 0.00% | +17,509+12.2% | Added |
| Nordea Investment Management AB | 165,713 | $295.0K | 0.00% | +7,971+5.1% | Added |
| Walleye Capital LLC | 146,679 | $277.2K | 0.00% | −57,388−28.1% | Reduced |
| Susquehanna Fundamental Investments, LLC | 145,037 | $274.1K | 0.00% | +145,037 | New |
| Jupiter Asset Management Ltd | 134,789 | $254.8K | 0.00% | −97,430−42.0% | Reduced |
| Swiss National Bank | 131,900 | $249.3K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 122,976 | $232.4K | 0.00% | −740−0.6% | Reduced |
| UBS Group AG | 118,110 | $223.2K | 0.00% | +1,158+1.0% | Added |
| Rhumbline Advisers | 115,895 | $219.0K | 0.00% | +1,891+1.7% | Added |
| TD Asset Management Inc | 111,738 | $211.2K | 0.00% | 00.0% | Unchanged |
| Aristides Capital LLC | 106,600 | $201.5K | 0.06% | +106,600 | New |
| STRS Ohio | 102,600 | $193.9K | 0.00% | 00.0% | Unchanged |
| Cercano Management LLC | 93,633 | $177.0K | 0.00% | 00.0% | Unchanged |
| DekaBank Deutsche Girozentrale | 100,000 | $176.0K | 0.00% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 90,736 | $171.5K | 0.00% | +34,450+61.2% | Added |
| Verition Fund Management LLC | 82,499 | $155.9K | 0.00% | +18,130+28.2% | Added |
| Alliancebernstein L.P. | 82,100 | $155.2K | 0.00% | −629,445−88.5% | Reduced |
| Alps Advisors Inc | 79,115 | $149.5K | 0.00% | +1,883+2.4% | Added |
| Millennium Management LLC | 74,685 | $141.2K | 0.00% | +23,467+45.8% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 73,153 | $138.3K | 0.00% | −1,734−2.3% | Reduced |
| Citigroup Inc | 69,773 | $131.9K | 0.00% | +9,698+16.1% | Added |
| Legal & General Group Plc | 66,172 | $124.8K | 0.00% | +5,319+8.7% | Added |
| California State Teachers Retirement System | 64,740 | $122.4K | 0.00% | 00.0% | Unchanged |
| Spears Abacus Advisors LLC | 61,613 | $116.4K | 0.00% | −4,050−6.2% | Reduced |
| HSBC Holdings PLC | 57,983 | $109.0K | 0.00% | +12,004+26.1% | Added |
| American Century Companies Inc | 56,735 | $107.2K | 0.00% | −7,103−11.1% | Reduced |
| Russell Investments Group, Ltd. | 56,239 | $106.3K | 0.00% | −16,386−22.6% | Reduced |
| Velan Capital Investment Management LP | 55,000 | $104.0K | 0.09% | +55,000 | New |
| Utah Retirement Systems | 51,430 | $97.2K | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 50,971 | $96.3K | 0.01% | +22,381+78.3% | Added |
| UBS Oconnor LLC | 50,000 | $94.5K | 0.00% | +50,000 | New |
| Marshall Wace, LLP | 48,448 | $91.6K | 0.00% | −5,552−10.3% | Reduced |
| Invesco Ltd. | 47,985 | $90.7K | 0.00% | +10,405+27.7% | Added |
| Algert Global LLC | 44,460 | $84.0K | 0.00% | −17,452−28.2% | Reduced |
| Tudor Investment Corp Et Al | 40,796 | $77.1K | 0.00% | +40,796 | New |
| Corebridge Financial, Inc. | 40,123 | $75.8K | 0.00% | −3,028−7.0% | Reduced |
| SG Americas Securities, LLC | 39,334 | $74.0K | 0.00% | +8,581+27.9% | Added |
| Wells Fargo & Company | 37,966 | $71.8K | 0.00% | +12,653+50.0% | Added |
| Jain Global LLC | 36,775 | $69.5K | 0.00% | +36,775 | New |
| Intech Investment Management LLC | 35,382 | $66.9K | 0.00% | +16,096+83.5% | Added |
| Jasper Ridge Partners, L.P. | 30,632 | $57.9K | 0.00% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 28,084 | $53.1K | 0.00% | +10,354+58.4% | Added |
| ProShare Advisors LLC | 27,367 | $51.7K | 0.00% | +6,367+30.3% | Added |
| Rpo LLC | 26,395 | $49.9K | 0.07% | +26,395 | New |
| Voya Investment Management LLC | 25,766 | $48.7K | 0.00% | −1,775−6.4% | Reduced |
| Blackstone Group Inc. | 25,715 | $48.6K | 0.00% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 25,570 | $48.3K | 0.00% | 00.0% | Unchanged |
| Vontobel Holding Ltd. | 25,000 | $47.3K | 0.00% | +14,000+127.3% | Added |
| Apollon Wealth Management, LLC | 25,000 | $47.3K | 0.00% | +25,000 | New |
| Janus Henderson Group PLC | 23,340 | $44.0K | 0.00% | 00.0% | Unchanged |
| Shell Asset Management Co | 21,493 | $41.0K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 20,765 | $39.2K | 0.00% | +2,047+10.9% | Added |
| Teacher Retirement System of Texas | 20,554 | $39.0K | 0.00% | +3,636+21.5% | Added |