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 |
|---|---|---|---|---|---|
| Nordea Investment Management AB | 19,427 | $417.0K | 0.00% | +19,427 | New |
| Principal Financial Group Inc | 19,614 | $405.0K | 0.00% | −8,450−30.1% | Reduced |
| Trexquant Investment LP | 17,998 | $372.0K | 0.02% | +17,998 | New |
| Handelsbanken Fonder AB | 15,700 | $324.0K | 0.00% | −1,100−6.5% | Reduced |
| British Columbia Investment Management Corp | 15,429 | $319.0K | 0.00% | +15,429 | New |
| Delphia (USA) Inc. | 15,323 | $316.0K | 0.34% | +15,323 | New |
| Ensign Peak Advisors, Inc | 15,190 | $314.0K | 0.00% | +15,190 | New |
| Metropolitan Life Insurance Co | 15,133 | $312.5K | 0.00% | 00.0% | Unchanged |
| Panagora Asset Management Inc | 14,687 | $303.0K | 0.00% | +14,687 | New |
| Arizona State Retirement System | 14,149 | $292.0K | 0.00% | +26+0.2% | Added |
| Gotham Asset Management, LLC | 13,978 | $289.0K | 0.01% | +13,978 | New |
| Royal Bank of Canada | 13,912 | $288.0K | 0.00% | +7,899+131.4% | Added |
| SEI Investments Co | 13,815 | $285.0K | 0.00% | −1,685−10.9% | Reduced |
| BNP Paribas Arbitrage, SA | 12,157 | $251.0K | 0.00% | −16,005−56.8% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 11,859 | $245.0K | 0.00% | +991+9.1% | Added |
| Quantedge Capital Pte Ltd | 11,500 | $237.0K | 0.10% | +11,500 | New |
| Janus Henderson Group PLC | 10,524 | $217.0K | 0.00% | +10,524 | New |
| Transcend Wealth Collective, LLC | 10,400 | $215.0K | 0.02% | +10,400 | New |
| Amalgamated Bank | 10,279 | $212.0K | 0.00% | −109−1.0% | Reduced |
| Utah Retirement Systems | 10,286 | $212.0K | 0.00% | +10,286 | New |
| Russell Investments Group, Ltd. | 10,160 | $212.0K | 0.00% | +10,160 | New |
| Teacher Retirement System of Texas | 10,145 | $209.0K | 0.00% | +10,145 | New |
| D.A. Davidson & Co. | 10,000 | $207.0K | 0.00% | −5,000−33.3% | Reduced |
| Simplex Trading, LLC | 7,943 | $164.0K | 0.01% | −5,578−41.3% | Reduced |
| Tower Research Capital LLC (TRC) | 7,925 | $164.0K | 0.00% | −2,736−25.7% | Reduced |
| Public Employees Retirement Association of Colorado | 7,914 | $163.0K | 0.00% | 00.0% | Unchanged |
| Virtus ETF Advisers LLC | 7,799 | $161.0K | 0.06% | −2,240−22.3% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 5,374 | $111.0K | 0.00% | 00.0% | Unchanged |
| Hershey Trust Co | 5,143 | $106.0K | 0.00% | +5,143 | New |
| Exane Derivatives | 4,983 | $102.9K | 0.03% | +4,866+4,159.0% | Added |
| Ameritas Investment Partners, Inc. | 4,559 | $94.0K | 0.00% | 00.0% | Unchanged |
| Cutler Group LP | 4,211 | $86.0K | 0.01% | −2,500−37.3% | Reduced |
| Point72 Hong Kong Ltd | 3,221 | $67.0K | 0.01% | −1,622−33.5% | Reduced |
| Amundi | 3,892 | $66.0K | 0.00% | 00.0% | Unchanged |
| Lazard Asset Management LLC | 3,128 | $64.0K | 0.00% | +3,128 | New |
| Rockefeller Capital Management L.P. | 3,019 | $62.0K | 0.00% | +15+0.5% | Added |
| Great West Life Assurance Co | 2,855 | $59.0K | 0.00% | 00.0% | Unchanged |
| FourThought Financial, LLC | 1,613 | $33.0K | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 1,575 | $32.0K | 0.01% | +1,302+476.9% | Added |
| Macquarie Group Ltd | 1,405 | $29.0K | 0.00% | 00.0% | Unchanged |
| Eaton Vance Management | 1,286 | $27.0K | 0.00% | +1,286 | New |
| Advisor Group Holdings, Inc. | 1,096 | $22.0K | 0.00% | +262+31.4% | Added |
| US Bancorp | 1,018 | $21.0K | 0.00% | −768−43.0% | Reduced |
| Mark Sheptoff Financial Planning, LLC | 900 | $19.0K | 0.01% | 00.0% | Unchanged |
| Macroview Investment Management LLC | 803 | $17.0K | 0.02% | +803 | New |
| CWM, LLC | 500 | $10.0K | 0.00% | +500 | New |
| Beaird Harris Wealth Management, LLC | 473 | $10.0K | 0.00% | +473 | New |
| Federation des caisses Desjardins du Quebec | 415 | $8.57K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 411 | $8.00K | 0.00% | −140−25.4% | Reduced |
| Dark Forest Capital Management LP | 310 | $6.00K | 0.00% | −8,786−96.6% | Reduced |
| Daiwa Securities Group Inc. | 277 | $6.00K | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 198 | $4.00K | 0.00% | −22,500−99.1% | Reduced |
| TCI Wealth Advisors, Inc. | 189 | $4.00K | 0.00% | +47+33.1% | Added |
| National Bank of Canada | 200 | $4.00K | 0.00% | +200 | New |
| HM Payson & Co | 184 | $4.00K | 0.00% | +184 | New |
| Washington Trust Advisors, Inc. | 156 | $3.00K | 0.00% | +156 | New |
| The PNC Financial Services Group, Inc. | 98 | $2.00K | 0.00% | −200−67.1% | Reduced |
| Signaturefd, LLC | 117 | $2.00K | 0.00% | +9+8.3% | Added |
| Bellevue Asset Management, LLC | 73 | $2.00K | 0.00% | −5−6.4% | Reduced |
| Fortitude Advisory Group L.L.C. | 76 | $2.00K | 0.00% | +76 | New |
| Salem Investment Counselors Inc | 50 | $1.00K | 0.00% | 00.0% | Unchanged |
| Investors Research Corp | 40 | $1.00K | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 50 | $1.00K | 0.00% | 00.0% | Unchanged |
| Bivin & Associates, Inc. | 30 | $1.00K | 0.00% | +30 | New |
| Parallel Advisors, LLC | 15 | $0 | 0.00% | −24−61.5% | Reduced |
| Solstein Capital, LLC | 18 | $0 | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 17 | $0 | 0.00% | +17 | New |
| Ghost Tree Capital, LLC | 0 | $0 | 0.00% | −80,000−100.0% | Sold out |
| Alkeon Capital Management LLC | 0 | $0 | 0.00% | −60,000−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −51,730−100.0% | Sold out |
| Duality Advisers, LP | 0 | $0 | 0.00% | −40,393−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −38,548−100.0% | Sold out |
| Vontobel Holding Ltd. | 0 | $0 | 0.00% | −32,000−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −29,872−100.0% | Sold out |
| Prosight Management, LP | 0 | $0 | 0.00% | −27,378−100.0% | Sold out |
| AXA S.A. | 0 | $0 | 0.00% | −24,300−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −18,800−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −15,214−100.0% | Sold out |
| O'Shaughnessy Asset Management, LLC | 0 | $0 | 0.00% | −3,281−100.0% | Sold out |
| Nisa Investment Advisors, LLC | 0 | $0 | 0.00% | −2,450−100.0% | Sold out |
| Meeder Asset Management Inc | 0 | $0 | 0.00% | −2,208−100.0% | Sold out |
| Penserra Capital Management LLC | 0 | $0 | 0.00% | −1,850−100.0% | Sold out |
| Bamco Inc | 0 | $0 | 0.00% | −700−100.0% | Sold out |
| Harbour Investments, Inc. | 0 | $0 | 0.00% | −205−100.0% | Sold out |
| Aspire Private Capital, LLC | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Brewin Dolphin Ltd | 0 | $0 | 0.00% | −91−100.0% | Sold out |
| Marshall Wace North America L.P. | – | – | – | – | Not filed |