ALECTOR INC (ALEC)
Institutional ownership reported to the SEC as of Q2 2026, across 30 quarters.
140
Reporting holders
$187.3M
Reported value
82.7%
Of shares outstanding
1.0%
Held as options
+5
Holder change
Institutions report 92,287,159 shares against 111,656,919 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| TCG Crossover Management, LLC | $20.1M | 10,000,000 | 0.48% | 3q | HELD |
| Nantahala Capital Management, LLC | $17.4M | 8,636,218 | 0.29% | 2q | +206.7%+$11.7M |
| BlackRock, Inc. | $15.8M | 7,847,879 | 0.00% | 8q | +1.4%+$214.3K |
| VANGUARD CAPITAL MANAGEMENT LLC | $8.1M | 4,009,340 | 0.00% | 2q | +9.0%+$664.5K |
| Kynam Capital Management, LP | $7.7M | 3,808,494 | 0.42% | 3q | +90.4%+$3.6M |
| Balyasny Asset Management L.P. | $7.5M | 3,247,426 | 0.01% | 3q | +10.6%+$724.8K |
| Merck & Co., Inc. | $7.1M | 3,545,719 | 1.35% | 7q | HELD |
| 683 Capital Management, LLC | $6.4M | 3,200,000 | 0.32% | 4q | HELD |
| D. E. Shaw & Co., Inc. | $5.9M | 2,959,983 | 0.00% | 13q | -11.2%-$749.4K |
| ADAR1 Capital Management, LLC | $5.8M | 2,883,583 | 0.27% | 3q | +174.6%+$3.7M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $5.7M | 2,820,493 | 0.00% | 2q | +9.2%+$476.3K |
| GEODE CAPITAL MANAGEMENT, LLC | $4.9M | 2,454,271 | 0.00% | 30q | +7.4%+$337.9K |
| Spruce Street Capital LP | $4.2M | 2,101,068 | 0.83% | 3q | HELD |
| MILLENNIUM MANAGEMENT LLC | $4.0M | 1,988,835 | 0.00% | 30q | HELD |
| Ikarian Capital, LLC | $4.0M | 1,982,606 | 0.43% | 7q | -4.8%-$201.0K |
| STATE STREET CORP | $3.8M | 1,879,765 | 0.00% | 30q | +0.8%+$28.6K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | $3.5M | 1,765,929 | 0.01% | 16q | -18.0%-$780.7K |
| MEDICI CAPITAL LLC | $3.3M | 1,652,520 | 6.51% | 15q | HELD |
| Affinity Asset Advisors, LLC | $3.0M | 1,510,000 | 0.14% | 2q | +202.0%+$2.0M |
| Eversept Partners, LP | $2.9M | 1,423,873 | 0.15% | 10q | +5.4%+$146.3K |
| FMR LLC | $2.8M | 1,396,398 | 0.00% | 30q | -22.3%-$803.4K |
| AQR CAPITAL MANAGEMENT LLC | $2.6M | 1,309,577 | 0.00% | 20q | +84.1%+$1.2M |
| Euclidean Capital LLC | $2.6M | 1,307,858 | 0.60% | 23q | HELD |
| MACKENZIE FINANCIAL CORP | $2.2M | 1,109,770 | 0.00% | 5q | +29.4%+$507.4K |
| DEUTSCHE BANK AG\ | $2.2M | 1,098,388 | 0.00% | 30q | +0.5%+$11.0K |
| DEERFIELD MANAGEMENT COMPANY, L.P. | $2.1M | 1,055,192 | 0.02% | 30q | HELD |
| TWO SIGMA INVESTMENTS, LP | $2.1M | 1,045,376 | 0.00% | 20q | -18.3%-$470.2K |
| RENAISSANCE TECHNOLOGIES LLC | $1.9M | 935,166 | 0.00% | 19q | -27.4%-$708.6K |
| DAFNA Capital Management LLC | $1.8M | 908,351 | 0.35% | 20q | HELD |
| Elmind Capital, LP | $1.8M | 900,000 | 0.45% | 3q | HELD |
| PANAGORA ASSET MANAGEMENT INC | $1.7M | 845,999 | 0.01% | 19q | +43.3%+$513.8K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $1.6M | 818,831 | 0.00% | 30q | +4.0%+$63.2K |
| Sixth Street Partners Management Company, L.P. | $1.6M | 818,831 | 0.00% | new | NEW |
| NORTHERN TRUST CORP | $1.6M | 773,462 | 0.00% | 30q | +11.7%+$163.2K |
| VANGUARD FIDUCIARY TRUST CO | $1.3M | 663,592 | 0.00% | 2q | +14.8%+$172.2K |
| MARSHALL WACE, LLP | $1.2M | 598,559 | 0.00% | 4q | -3.5%-$43.9K |
| CANTOR FITZGERALD, L. P. | $1.2M | 590,984 | 0.01% | new | NEW |
| BOOTHBAY FUND MANAGEMENT, LLC | $1.1M | 532,850 | 0.01% | 10q | -4.8%-$54.0K |
| CITADEL ADVISORS LLC | $1.0M | 391,232 | 0.00% | 26q | +404.5%+$806.0K |
| GOLDMAN SACHS GROUP INC | $872.1K | 433,875 | 0.00% | 30q | -28.2%-$343.1K |
| XTX Topco Ltd | $803.4K | 399,681 | 0.01% | 13q | -28.6%-$322.0K |
| UBS Group AG | $550.3K | 273,780 | 0.00% | 30q | +88.4%+$258.2K |
| Invesco Ltd. | $516.8K | 257,139 | 0.00% | 22q | -3.0%-$15.9K |
| Bank of New York Mellon Corp | $502.7K | 250,093 | 0.00% | 30q | -0.9%-$4.4K |
| AMERIPRISE FINANCIAL INC | $451.3K | 224,530 | 0.00% | 26q | -58.6%-$639.2K |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P | $402.0K | 200,000 | 0.31% | 3q | HELD |
| LMR Partners LLP | $402.0K | 200,000 | 0.00% | new | NEW |
| Nuveen, LLC | $354.2K | 176,234 | 0.00% | 6q | +13.8%+$42.8K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $346.6K | 24,123 | 0.00% | 26q | -77.6%-$1.2M |
| Utah Retirement Systems | $310.1K | 154,290 | 0.00% | 19q | HELD |
| Jasper Ridge Partners, L.P. | $295.6K | 147,062 | 0.00% | 12q | +100.0%+$147.8K |
| BANK OF AMERICA CORP /DE/ | $286.8K | 142,678 | 0.00% | 30q | -62.5%-$478.8K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $286.4K | 142,500 | 0.01% | 5q | HELD |
| CANADA PENSION PLAN INVESTMENT BOARD | $263.9K | 131,300 | 0.00% | 3q | -28.3%-$104.3K |
| MORGAN STANLEY | $242.2K | 120,480 | 0.00% | 30q | -67.0%-$490.6K |
| JANE STREET GROUP, LLC | $241.4K | options only | 0.00% | 13q | OPTIONS |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | $240.7K | 119,769 | 0.00% | 5q | -11.9%-$32.6K |
| ALLIANCEBERNSTEIN L.P. | $234.2K | 108,940 | 0.00% | 29q | +17.2%+$34.4K |
| SIMPLEX TRADING, LLC | $233.9K | 85,488 | 0.00% | 4q | +24.8%+$46.6K |
| RHUMBLINE ADVISERS | $220.1K | 109,532 | 0.00% | 29q | +8.1%+$16.5K |
| STRS OHIO | $204.2K | 101,600 | 0.00% | 20q | +17.5%+$30.4K |
| Russell Investments Group, Ltd. | $198.0K | 98,496 | 0.00% | 19q | +48.9%+$65.1K |
| WELLS FARGO & COMPANY/MN | $179.2K | 89,172 | 0.00% | 30q | +29.1%+$40.4K |
| Blackstone Inc. | $155.1K | 77,145 | 0.00% | 15q | HELD |
| SEI INVESTMENTS CO | $143.0K | 71,151 | 0.00% | 6q | +32.1%+$34.8K |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | $140.0K | 69,666 | 0.00% | 2q | HELD |
| IEQ CAPITAL, LLC | $121.7K | 60,570 | 0.00% | 2q | +28.7%+$27.1K |
| Verdad Advisers, LP | $121.6K | 60,509 | 0.12% | 2q | +156.9%+$74.3K |
| MetLife Investment Management, LLC | $118.0K | 58,696 | 0.00% | 2q | +62.1%+$45.2K |
| Mariner, LLC | $106.0K | 52,709 | 0.00% | 2q | +180.4%+$68.2K |
| MERCER GLOBAL ADVISORS INC /ADV | $102.5K | 51,008 | 0.00% | new | NEW |
| Vanguard Personalized Indexing Management, LLC | $99.4K | 49,445 | 0.00% | 7q | -2.3%-$2.4K |
| HSBC HOLDINGS PLC | $98.0K | 48,523 | 0.00% | 17q | HELD |
| Graham Capital Management, L.P. | $93.5K | 46,496 | 0.00% | new | NEW |
| CITIGROUP INC | $93.0K | 46,275 | 0.00% | 30q | +897.5%+$83.7K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $90.8K | 45,190 | 0.00% | 9q | +5.9%+$5.1K |
| BARCLAYS PLC | $90.4K | 44,957 | 0.00% | 30q | +5.6%+$4.8K |
| JPMORGAN CHASE & CO | $89.4K | 42,998 | 0.00% | 30q | +15.0%+$11.7K |
| DIVERSIFIED TRUST CO | $85.1K | 42,351 | 0.00% | 14q | +63.5%+$33.1K |
| DIMENSIONAL FUND ADVISORS LP | $68.0K | 33,728 | 0.00% | 15q | -88.1%-$504.5K |
| Cerity Partners LLC | $65.4K | 32,521 | 0.00% | 6q | +20.6%+$11.1K |
| Vanguard Global Advisers, LLC | $62.9K | 31,302 | 0.00% | 2q | HELD |
| Cannell & Spears LLC | $61.0K | 30,342 | 0.00% | 10q | -44.5%-$48.8K |
| Vontobel Holding Ltd. | $60.3K | 30,000 | 0.00% | 12q | HELD |
| Point72 Asset Management, L.P. | $53.7K | 26,699 | 0.00% | 4q | -66.7%-$107.3K |
| ROYAL BANK OF CANADA | $53.0K | 26,122 | 0.00% | 27q | +273.7%+$38.8K |
| GROUP ONE TRADING LLC | $51.7K | 25,208 | 0.00% | new | NEW |
| INTECH INVESTMENT MANAGEMENT LLC | $49.3K | 24,530 | 0.00% | 8q | +2.4%+$1.2K |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $48.7K | 30,251 | 0.00% | 2q | +66.2%+$19.4K |
| Police & Firemen's Retirement System of New Jersey | $47.1K | 23,426 | 0.00% | 7q | HELD |
| Merit Financial Group, LLC | $45.2K | 22,486 | 0.00% | 2q | +105.8%+$23.2K |
| VOYA INVESTMENT MANAGEMENT LLC | $44.0K | 21,898 | 0.00% | 28q | +41.5%+$12.9K |
| BNP PARIBAS FINANCIAL MARKETS | $42.6K | 21,200 | 0.00% | 29q | +5.9%+$2.4K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $39.0K | 19,397 | 0.00% | 28q | -25.8%-$13.6K |
| Qube Research & Technologies Ltd | $33.3K | 16,569 | 0.00% | new | NEW |
| CAPTRUST FINANCIAL ADVISORS | $32.2K | 16,037 | 0.00% | 2q | +50.6%+$10.8K |
| PRUDENTIAL FINANCIAL INC | $32.2K | 16,015 | 0.00% | 5q | -32.7%-$15.6K |
| Creative Planning | $30.2K | 15,015 | 0.00% | new | NEW |
| Tower Research Capital LLC (TRC) | $29.0K | 14,450 | 0.00% | 25q | +143.1%+$17.1K |
| HAMILTON LANE ADVISORS LLC | $28.9K | 14,400 | 0.02% | 2q | HELD |
Showing the largest 100 of 142 reported holders.
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 140 | $187.3M | 92,287,159 | 15 | 56 | 35 | 1.0% |
| Q1 2026 | 135 | $182.4M | 84,528,269 | 25 | 43 | 34 | 0.4% |
| Q4 2025 | 122 | $126.8M | 80,560,015 | 18 | 40 | 35 | 0.9% |
| Q3 2025 | 141 | $209.7M | 70,017,029 | 24 | 43 | 38 | 1.2% |
| Q2 2025 | 129 | $89.0M | 63,557,895 | 15 | 44 | 34 | 0.1% |
| Q1 2025 | 132 | $87.1M | 70,333,762 | 17 | 40 | 30 | 0.2% |
| Q4 2024 | 139 | $135.3M | 71,499,905 | 24 | 42 | 35 | 0.2% |
| Q3 2024 | 148 | $343.6M | 73,494,387 | 17 | 43 | 46 | 0.3% |
| Q2 2024 | 148 | $329.9M | 72,632,157 | 19 | 55 | 45 | 0.1% |
| Q1 2024 | 144 | $483.0M | 80,164,366 | 25 | 54 | 32 | 0.1% |
| Q4 2023 | 134 | $543.7M | 67,995,035 | 11 | 43 | 41 | 0.2% |
| Q3 2023 | 133 | $397.1M | 61,166,877 | 15 | 51 | 38 | 0.2% |
| Q2 2023 | 132 | $344.5M | 57,301,357 | 13 | 46 | 35 | 0.1% |
| Q1 2023 | 133 | $388.1M | 62,753,854 | 13 | 48 | 34 | 0.1% |
| Q4 2022 | 126 | $444.4M | 47,768,006 | 13 | 47 | 27 | 1.0% |
| Q3 2022 | 164 | $521.6M | 54,670,941 | 28 | 60 | 39 | 0.9% |
| Q2 2022 | 151 | $549.8M | 53,818,208 | 12 | 53 | 45 | 0.6% |
| Q1 2022 | 163 | $794.1M | 55,410,646 | 19 | 57 | 49 | 0.5% |
| Q4 2021 | 164 | $1.1B | 55,018,953 | 32 | 50 | 39 | 0.8% |
| Q3 2021 | 146 | $1.2B | 52,231,598 | 25 | 55 | 26 | 1.0% |
| Q2 2021 | 136 | $1.0B | 49,168,872 | 28 | 49 | 29 | 0.9% |
| Q1 2021 | 126 | $936.0M | 46,310,197 | 16 | 29 | 44 | 0.5% |
| Q4 2020 | 133 | $711.3M | 46,352,631 | 12 | 37 | 50 | 1.4% |
| Q3 2020 | 139 | $526.5M | 49,517,580 | 34 | 44 | 34 | 0.8% |
| Q2 2020 | 137 | $1.2B | 50,107,809 | 41 | 48 | 31 | 0.6% |
| Q1 2020 | 108 | $1.2B | 47,904,666 | 38 | 37 | 26 | 0.4% |
| Q4 2019 | 82 | $645.8M | 37,480,809 | 15 | 35 | 14 | 0.0% |
| Q3 2019 | 76 | $500.0M | 34,672,125 | 18 | 35 | 12 | 0.0% |
| Q2 2019 | 63 | $551.3M | 29,064,980 | 14 | 19 | 12 | 0.0% |
| Q1 2019 | 54 | $526.0M | 28,731,149 | 54 | 0 | 0 | 0.0% |