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 |
|---|---|---|---|---|---|
| Arizona State Retirement System | 17,576 | $140.3K | 0.00% | −223−1.3% | Reduced |
| Walleye Trading LLC | 17,279 | $137.9K | 0.00% | +17,279 | New |
| Wells Fargo & Company | 16,693 | $133.2K | 0.00% | −30,183−64.4% | Reduced |
| SG Americas Securities, LLC | 16,726 | $133.0K | 0.00% | +16,726 | New |
| ProShare Advisors LLC | 15,882 | $126.7K | 0.00% | +2,158+15.7% | Added |
| Blackstone Group Inc. | 15,429 | $123.1K | 0.00% | 00.0% | Unchanged |
| Axq Capital, LP | 15,300 | $122.1K | 0.03% | −3,788−19.8% | Reduced |
| Tower Research Capital LLC (TRC) | 15,279 | $121.9K | 0.00% | +14,148+1,250.9% | Added |
| Jasper Ridge Partners, L.P. | 14,706 | $117.4K | 0.00% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 14,509 | $116.0K | 0.00% | −3,209−18.1% | Reduced |
| Caxton Associates LP | 14,349 | $114.5K | 0.01% | +14,349 | New |
| Diversified Trust Co | 14,102 | $112.5K | 0.00% | +1,541+12.3% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 12,058 | $96.2K | 0.00% | 00.0% | Unchanged |
| Virtus ETF Advisers LLC | 11,573 | $92.4K | 0.06% | −1,258−9.8% | Reduced |
| Man Group plc | 11,164 | $89.1K | 0.00% | – | – |
| PDT Partners, LLC | 11,157 | $89.0K | 0.01% | −20,600−64.9% | Reduced |
| Vontobel Holding Ltd. | 11,000 | $87.8K | 0.00% | 00.0% | Unchanged |
| E Fund Management Co., Ltd. | 10,192 | $81.3K | 0.01% | +10,192 | New |
| Texas Yale Capital Corp. | 10,000 | $79.8K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 9,733 | $77.7K | 0.02% | +7,584+352.9% | Added |
| Amalgamated Bank | 9,025 | $72.0K | 0.00% | −648−6.7% | Reduced |
| Public Employees Retirement Association of Colorado | 7,914 | $63.0K | 0.00% | 00.0% | Unchanged |
| Great West Life Assurance Co | 7,785 | $62.0K | 0.00% | +4,930+172.7% | Added |
| EntryPoint Capital, LLC | 7,191 | $57.4K | 0.06% | +7,191 | New |
| Ameritas Investment Partners, Inc. | 6,260 | $50.0K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 6,218 | $49.6K | 0.00% | +4,231+212.9% | Added |
| Metropolitan Life Insurance Co | 3,430 | $27.4K | 0.00% | 00.0% | Unchanged |
| Quantbot Technologies LP | 3,000 | $23.9K | 0.00% | +3,000 | New |
| Signaturefd, LLC | 1,271 | $10.1K | 0.00% | −575−31.1% | Reduced |
| Advisory Services Network, LLC | 683 | $5.45K | 0.00% | +683 | New |
| Advisor Group Holdings, Inc. | 485 | $3.87K | 0.00% | +83+20.6% | Added |
| Federation des caisses Desjardins du Quebec | 455 | $3.63K | 0.00% | 00.0% | Unchanged |
| Lindbrook Capital, LLC | 445 | $3.55K | 0.00% | +332+293.8% | Added |
| Mark Sheptoff Financial Planning, LLC | 300 | $2.39K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 277 | $2.00K | 0.00% | 00.0% | Unchanged |
| National Bank of Canada | 200 | $1.59K | 0.00% | 00.0% | Unchanged |
| Chesapeake Asset Management LLC | 150 | $1.20K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 100 | $1.00K | 0.00% | −163−62.0% | Reduced |
| Quadrant Capital Group LLC | 91 | $727 | 0.00% | 00.0% | Unchanged |
| RFP Financial Group LLC | 64 | $511 | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 50 | $399 | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 48 | $286 | 0.00% | +48 | New |
| GWM Advisors LLC | 32 | $255 | 0.00% | 00.0% | Unchanged |
| Comerica Bank | 21 | $168 | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 15 | $120 | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 6 | $48 | 0.00% | −146−96.1% | Reduced |
| Farther Finance Advisors, LLC | 2 | $16 | 0.00% | +2 | New |
| Covestor Ltd | 9 | $0 | 0.00% | −1−10.0% | Reduced |
| 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 |