Alector, Inc. Common Stock (ALEC)
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
Alector, Inc. Common Stock (ALEC) is listed on Nasdaq, where it has traded since February 7, 2019.
- Listed On
- Nasdaq
- Listed Since
- February 7, 2019
- Employees
- 103
- Market Cap
- $218M
About Alector, Inc. Common Stock
Alector Inc is a clinical-stage biotechnology company focused on developing therapies for neurodegenerative diseases. The company advances a pipeline of product candidates including Nivisnebart (AL101/GSK4527226) for Alzheimer's disease, AL137 for Alzheimer's disease, AL050 for Parkinson's disease and Lewy body dementia, and AL064, an siRNA program targeting tau for Alzheimer's disease and other tauopathies, supported by its proprietary Alector Brain Carrier (ABC) platform designed to improve delivery of therapeutics across the blood-brain barrier.
Institutional ownership
In 13F filings for the quarter ended June 30, 2026, 136 institutions reported holding ALEC, with 91.2 million shares worth $183.4 million in aggregate. The largest reported holder was Tcg Crossover Management, with 10.0 million shares worth $20.1 million. Of the 5 largest holders listed below, 4 added shares and 1 held its position unchanged during the quarter.
| Institution | Shares | Value | Quarter change |
|---|---|---|---|
| Tcg Crossover Management | 10,000,000 | $20M | Unchanged |
| BlackRock | 7,847,879 | $16M | Added 1.38% |
| Vanguard | 7,574,172 | $15M | Added 9.42% |
| Acadian Asset Management | 4,414,345 | $9M | Added 9.3% |
| Nantahala Capital Management | 4,318,109 | $9M | Added 53.34% |
Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.
Frequently asked questions
What is ALEC?
Alector, Inc. Common Stock (ALEC) is listed on Nasdaq, where it has traded since February 7, 2019.
Who are the largest institutional holders of ALEC?
In 13F filings for the quarter ended June 30, 2026, the largest reported holders of ALEC were Tcg Crossover Management, BlackRock and Vanguard.
How many institutions own ALEC?
136 institutions reported a position in ALEC for the quarter ended June 30, 2026, worth $183.4 million in total.
Did institutions buy or sell ALEC last quarter?
Of the 5 largest reported holders, 4 added shares and 1 held its position unchanged during the quarter. Every reported holder and its change is on the SentiSense ownership page for ALEC.
Every reported institutional holder, plus insider and congressional trades in ALEC, on SentiSense.