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 2021
Institutional positions in Alector, Inc. as of Dec 31, 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
- 167
- +23 vs. Q3 2021
- Shares held
- 54.7M
- +3.58M (+7.0%) vs. Q3 2021
- Total value
- $1.13B
- −$37.1M (−3.2%) vs. Q3 2021
- New holders
- 42
- 53 more added
- Sold out
- 19
- 45 more reduced
1 institution that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2021
Shares, value and share of portfolio for each institution holding Alector, Inc.; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 5,540,240 | $114.4M | 0.00% | +462,807+9.1% | Added |
| BlackRock Inc. | 5,380,409 | $111.1M | 0.00% | +109,595+2.1% | Added |
| Federated Hermes, Inc. | 5,280,847 | $109.0M | 0.20% | +279,929+5.6% | Added |
| EcoR1 Capital, LLC | 4,994,970 | $103.1M | 3.30% | 00.0% | Unchanged |
| FMR LLC | 4,614,728 | $95.3M | 0.01% | −217,066−4.5% | Reduced |
| State Street Corp | 3,063,695 | $63.3M | 0.00% | −520,824−14.5% | Reduced |
| JPMorgan Chase & Co | 2,526,635 | $52.2M | 0.01% | −33,258−1.3% | Reduced |
| Franklin Resources Inc | 2,261,803 | $46.7M | 0.02% | +22,386+1.0% | Added |
| Morgan Stanley | 1,938,260 | $40.0M | 0.00% | +1,133,000+140.7% | Added |
| Price T Rowe Associates Inc | 1,876,848 | $38.8M | 0.00% | +9,950+0.5% | Added |
| Casdin Capital, LLC | 1,650,000 | $34.1M | 0.96% | 00.0% | Unchanged |
| Marshall Wace, LLP | 1,080,854 | $22.3M | 0.04% | +768,293+245.8% | Added |
| Geode Capital Management, LLC | 1,061,761 | $21.9M | 0.00% | +61,993+6.2% | Added |
| Deerfield Management Company, L.P. (Series C) | 1,055,192 | $21.8M | 0.46% | 00.0% | Unchanged |
| Euclidean Capital LLC | 980,894 | $20.3M | 11.52% | 00.0% | Unchanged |
| Gilder Gagnon Howe & Co LLC | 646,963 | $13.4M | 0.08% | −225,085−25.8% | Reduced |
| Northern Trust Corp | 601,986 | $12.4M | 0.00% | −4,611−0.8% | Reduced |
| Charles Schwab Investment Management Inc | 412,768 | $8.52M | 0.00% | +6,656+1.6% | Added |
| Bank of America Corp | 411,008 | $8.49M | 0.00% | +141,861+52.7% | Added |
| Goldman Sachs Group Inc | 403,322 | $8.33M | 0.00% | −190,937−32.1% | Reduced |
| Millennium Management LLC | 391,206 | $8.08M | 0.01% | +176,656+82.3% | Added |
| Nuveen Asset Management, LLC | 386,591 | $7.98M | 0.00% | +37,480+10.7% | Added |
| Baillie Gifford & Co | 359,724 | $7.43M | 0.00% | +19,372+5.7% | Added |
| Two Sigma Investments, LP | 347,887 | $7.18M | 0.02% | +7,401+2.2% | Added |
| New Leaf Venture Partners, L.L.C. | 339,569 | $7.01M | 2.54% | 00.0% | Unchanged |
| Pier Capital, LLC | 305,921 | $6.32M | 0.67% | −615−0.2% | Reduced |
| Allspring Global Investments Holdings, LLC | 296,888 | $6.13M | 0.01% | +296,888 | New |
| Two Sigma Advisers, LP | 283,400 | $5.85M | 0.01% | +133,200+88.7% | Added |
| Renaissance Technologies LLC | 273,480 | $5.65M | 0.01% | +273,480 | New |
| Schroder Investment Management Group | 251,996 | $5.20M | 0.01% | +91,681+57.2% | Added |
| Baker Bros. Advisors LP | 239,228 | $4.94M | 0.02% | 00.0% | Unchanged |
| Voloridge Investment Management, LLC | 230,867 | $4.77M | 0.03% | −195,035−45.8% | Reduced |
| Bank of New York Mellon Corp | 204,713 | $4.23M | 0.00% | +20,492+11.1% | Added |
| Susquehanna International Group, LLP | 180,482 | $3.73M | 0.01% | +63,415+54.2% | Added |
| Rafferty Asset Management, LLC | 179,587 | $3.71M | 0.02% | +42,682+31.2% | Added |
| Alphabet Inc. | 175,866 | $3.63M | 0.09% | 00.0% | Unchanged |
| Norges Bank | 174,037 | $3.59M | 0.00% | +63,388+57.3% | Added |
| UBS Group AG | 167,350 | $3.46M | 0.00% | +26,099+18.5% | Added |
| Alliancebernstein L.P. | 161,217 | $3.33M | 0.00% | +57,075+54.8% | Added |
| Dimensional Fund Advisors LP | 159,905 | $3.30M | 0.00% | +83,835+110.2% | Added |
| Citigroup Inc | 158,219 | $3.27M | 0.00% | +61,712+63.9% | Added |
| DAFNA Capital Management LLC | 155,247 | $3.21M | 0.81% | +47,835+44.5% | Added |
| First Trust Advisors LP | 143,217 | $2.96M | 0.00% | +143,217 | New |
| Cannell Peter B & Co Inc | 134,597 | $2.78M | 0.08% | −525−0.4% | Reduced |
| Swiss National Bank | 115,700 | $2.39M | 0.00% | +1,700+1.5% | Added |
| Barclays PLC | 109,921 | $2.27M | 0.00% | +36,526+49.8% | Added |
| Alps Advisors Inc | 94,056 | $1.94M | 0.02% | −5,071−5.1% | Reduced |
| State of Wisconsin Investment Board | 91,100 | $1.88M | 0.00% | +4,200+4.8% | Added |
| AQR Capital Management LLC | 90,576 | $1.87M | 0.00% | +56,037+162.2% | Added |
| Cubist Systematic Strategies, LLC | 87,441 | $1.81M | 0.02% | +13,790+18.7% | Added |
| Wells Fargo & Company | 84,830 | $1.75M | 0.00% | +41,507+95.8% | Added |
| Parametric Portfolio Associates LLC | 83,886 | $1.73M | 0.00% | +5,656+7.2% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 83,130 | $1.72M | 0.01% | +56,454+211.6% | Added |
| Ameriprise Financial Inc | 81,808 | $1.69M | 0.00% | +20,480+33.4% | Added |
| Jump Financial, LLC | 81,600 | $1.69M | 0.11% | +40,100+96.6% | Added |
| California State Teachers Retirement System | 76,407 | $1.58M | 0.00% | +2,354+3.2% | Added |
| American Century Companies Inc | 76,298 | $1.58M | 0.00% | +76,298 | New |
| UBS Asset Management Americas Inc | 69,376 | $1.43M | 0.00% | +11,681+20.2% | Added |
| Alpha DNA Investment Management LLC | 66,852 | $1.38M | 0.88% | +66,852 | New |
| Platinum Investment Management Ltd | 65,380 | $1.35M | 0.04% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 65,329 | $1.35M | 0.01% | −19,345−22.8% | Reduced |
| Deutsche Bank AG | 65,320 | $1.35M | 0.00% | +2,620+4.2% | Added |
| Putnam Investments LLC | 62,974 | $1.30M | 0.00% | +62,974 | New |
| TD Asset Management Inc | 59,857 | $1.24M | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 59,719 | $1.23M | 0.00% | −906−1.5% | Reduced |
| Arrowstreet Capital, Limited Partnership | 57,748 | $1.19M | 0.00% | +57,748 | New |
| PDT Partners, LLC | 56,392 | $1.16M | 0.09% | −45,671−44.7% | Reduced |
| SG Americas Securities, LLC | 53,443 | $1.10M | 0.01% | −25,799−32.6% | Reduced |
| Legal & General Group Plc | 49,751 | $1.03M | 0.00% | +1,614+3.4% | Added |
| ExodusPoint Capital Management, LP | 45,942 | $949.0K | 0.01% | +45,942 | New |
| Jackson Creek Investment Advisors LLC | 45,024 | $930.0K | 0.33% | −3,142−6.5% | Reduced |
| STRS Ohio | 42,300 | $873.0K | 0.00% | +34,300+428.7% | Added |
| New York State Common Retirement Fund | 41,481 | $857.0K | 0.00% | −92−0.2% | Reduced |
| Acadian Asset Management LLC | 40,947 | $843.0K | 0.00% | +40,947 | New |
| Corton Capital Inc. | 39,334 | $812.0K | 0.36% | +39,334 | New |
| Dynamic Technology Lab Private Ltd | 38,986 | $805.0K | 0.09% | +38,986 | New |
| Credit Suisse AG | 38,249 | $790.0K | 0.00% | +667+1.8% | Added |
| Truist Financial Corp | 34,526 | $713.0K | 0.00% | −98−0.3% | Reduced |
| Jane Street Group, LLC | 32,743 | $677.0K | 0.00% | −54,661−62.5% | Reduced |
| Massachusetts Financial Services Co | 32,773 | $677.0K | 0.00% | +32,773 | New |
| Kiwi Wealth Investments Limited Partnership | 32,471 | $671.0K | 0.03% | +32,471 | New |
| AE Wealth Management LLC | 31,303 | $646.0K | 0.00% | +31,303 | New |
| American International Group, Inc. | 31,041 | $641.0K | 0.00% | −929−2.9% | Reduced |
| Citadel Advisors LLC | 30,941 | $639.0K | 0.00% | −143,229−82.2% | Reduced |
| Wellington Management Group LLP | 30,836 | $637.0K | 0.00% | +30,836 | New |
| Manufacturers Life Insurance Company, The | 30,267 | $625.0K | 0.00% | −866−2.8% | Reduced |
| Qube Research & Technologies Ltd | 28,261 | $584.0K | 0.00% | +28,261 | New |
| Capital Impact Advisors, LLC | 27,919 | $577.0K | 0.40% | +27,919 | New |
| Invesco Ltd. | 26,943 | $557.0K | 0.00% | −1,602−5.6% | Reduced |
| HRT Financial LP | 26,619 | $549.0K | 0.00% | −15,959−37.5% | Reduced |
| State Board of Administration of Florida Retirement System | 25,380 | $524.0K | 0.00% | −876−3.3% | Reduced |
| Walleye Capital LLC | 25,072 | $518.0K | 0.02% | +9,518+61.2% | Added |
| ProShare Advisors LLC | 24,207 | $500.0K | 0.00% | −557−2.2% | Reduced |
| Oppenheimer & Co Inc | 24,100 | $497.0K | 0.01% | 00.0% | Unchanged |
| DekaBank Deutsche Girozentrale | 22,800 | $484.0K | 0.00% | +600+2.7% | Added |
| Voya Investment Management LLC | 22,866 | $472.0K | 0.00% | +78+0.3% | Added |
| First Manhattan Co | 22,610 | $466.0K | 0.00% | 00.0% | Unchanged |
| IndexIQ Advisors LLC | 20,969 | $433.0K | 0.01% | −1,355−6.1% | Reduced |
| Stifel Financial Corp | 20,675 | $427.0K | 0.00% | −50.0% | Reduced |
| MetLife Investment Management | 20,549 | $424.3K | 0.00% | 00.0% | Unchanged |