Alector, Inc. (ALEC:NASDAQ) closed at $1.83 on October 23, 2026, unchanged on the day. The stock trades 33.7% below its 52-week high of $2.76 and 67.9% above its 52-week low of $1.09. Over the past year, it gained 22.0%. Alector, Inc. is part of the Health Care sector (Biotechnology: Biological Products (No Diagnostic Substances)).
In 252 trading sessions since October 23, 2025, ALEC closed higher on 116 days (46%). Its best day was August 11, 2026 (+23.67%) and its worst was May 8, 2026 (-13.93%). The stock moved 10% or more in a single session 11 times. It opened at least 5% above the previous day's high 3 times.
Alector Inc is a clinical stage biopharmaceutical company. It is engaged in developing a novel therapeutic approach for the treatment of neurodegeneration. The firm is involved in developing therapies which are designed to simultaneously counteract pathologies by restoring healthy immune function to the brain.
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Based on end-of-day data. For information only, not investment advice.