Alector Inc (ALEC) returns
Alector returns over 5 years
$1,000 invested in Alector five years ago was worth $101.66 at the close on October 30, 2026, with dividends reinvested: an average return of -36.7% a year. The same $1,000 in the S&P 500 (SPY) became $1,760.
Total return by period
| Period | Total return | A year, on average | $1,000 became | S&P 500 (SPY) |
|---|---|---|---|---|
| 1 month | +19.5% | — | $1,195 | -0.9% |
| 3 months | +36.4% | — | $1,364 | +2.1% |
| Year to date | +41.7% | — | $1,417 | +11.7% |
| 1 year | +45.4% | — | $1,454 | +12.4% |
| 3 years | -57.2% | -24.6% | $428.29 | +88.5% |
| 5 years | -89.8% | -36.7% | $101.66 | +76.0% |
Alector return by calendar year
| Year | ALEC | S&P 500 (SPY) | Difference |
|---|---|---|---|
| 2026 to date | +41.7% | +11.7% | +30.0% |
| 2025 | -17.5% | +17.7% | -35.2% |
| 2024 | -76.3% | +24.9% | -101.2% |
| 2023 | -13.5% | +26.2% | -39.7% |
| 2022 | -55.3% | -18.2% | -37.1% |
| 2021 | +36.5% | +28.7% | +7.7% |
| 2020 | -12.2% | +18.4% | -30.6% |
Past returns do not predict future returns. Returns are computed from our daily closes, adjusted for splits and with dividends reinvested on their ex-dates; taxes and trading costs are left out.
See also: ALEC financials
No forecast, no recommendation. This page describes Alector Inc from published data; it is not advice to buy, sell or hold any security.
Figures as of the close on Oct 30, 2026 unless a row says otherwise. Prices are split adjusted; returns include dividends reinvested. Data may be delayed. See the disclaimer and how TrendArc works.