Alector, Inc. (ALEC) Stock Price History
Historical prices from 2019 to 2026
- 1M
- -33.5%
- 3M
- -12.1%
- YTD
- +18.3%
- 1Y
- -42.7%
- 3Y
- -33.6%
- 5Y
- -39.8%
Loading 10-year price history...
ALEC Historical Performance
ALEC Annual Returns
Year-by-year price performance · 2019–2026
- 2019 annual price return
- -4.3%
- 2020 annual price return
- -8.7%
- 2021 annual price return
- +37.9%
- 2022 annual price return
- -55.6%
- 2023 annual price return
- -12.3%
- 2024 annual price return
- -76.3%
- 2025 annual price return
- -17.5%
- 2026 annual price return
- -1.3%
ALEC Stock Price Trajectory (2019–2026)
As of October 3, 2026, Alector, Inc. (ALEC) trades at $1.81, representing a -42.7% return over the past year. The stock has delivered a -92.1% total return over five years (-39.8% CAGR), reflecting challenging market conditions.
The stock reached its all-time high of $43.32 on July 2, 2021. From this peak, ALEC has corrected -95.8%, currently trading 9% below its 200-day moving average, suggesting potential weakness.
When compared to Healthcare sector peers PRTA (-16.3% 1Y), ACAD (-6.7% 1Y), and SAVA (-72.7% 1Y), ALEC has underperformed the peer group average. Compare ALEC vs PRTA →
ALEC Historical Price Data · from 2019
Rows 1–50 of 1,924| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-10-02 | 1.90 | 1.96 | 1.81 | 1.81 | 1.17M | -2.69% |
| 2026-10-01 | 1.82 | 1.91 | 1.80 | 1.86 | 774K | +0.54% |
| 2026-09-30 | 1.88 | 1.95 | 1.83 | 1.85 | 786K | -1.07% |
| 2026-09-29 | 1.95 | 1.95 | 1.86 | 1.87 | 953K | -2.60% |
| 2026-09-28 | 1.92 | 1.94 | 1.86 | 1.92 | 713K | -1.54% |
| 2026-09-25 | 1.92 | 2.05 | 1.90 | 1.95 | 1.02M | +1.56% |
| 2026-09-24 | 2.03 | 2.04 | 1.91 | 1.92 | 849K | -4.95% |
| 2026-09-23 | 2.00 | 2.02 | 1.95 | 2.02 | 1.13M | +0.50% |
| 2026-09-22 | 1.97 | 2.04 | 1.93 | 2.01 | 1.46M | +4.15% |
| 2026-09-21 | 1.85 | 1.95 | 1.85 | 1.93 | 870K | +1.05% |
| 2026-09-18 | 1.88 | 1.91 | 1.79 | 1.91 | 1.89M | +3.24% |
| 2026-09-17 | 1.93 | 1.94 | 1.83 | 1.85 | 931K | -3.90% |
| 2026-09-16 | 2.06 | 2.06 | 1.91 | 1.93 | 622K | -5.41% |
| 2026-09-15 | 2.19 | 2.21 | 1.99 | 2.04 | 716K | -7.92% |
| 2026-09-14 | 2.15 | 2.23 | 2.10 | 2.21 | 2.46M | +3.27% |
| 2026-09-11 | 2.18 | 2.18 | 2.02 | 2.14 | 4.70M | 0.00% |
| 2026-09-10 | 2.22 | 2.24 | 2.00 | 2.14 | 3.78M | -5.73% |
| 2026-09-09 | 2.46 | 2.46 | 2.25 | 2.27 | 506K | -8.10% |
| 2026-09-08 | 2.36 | 2.62 | 2.33 | 2.47 | 915K | +0.41% |
| 2026-09-04 | 2.52 | 2.58 | 2.44 | 2.46 | 496K | -1.99% |
| 2026-09-03 | 2.70 | 2.75 | 2.44 | 2.51 | 2.57M | -7.72% |
| 2026-09-02 | 2.45 | 2.76 | 2.40 | 2.72 | 1.66M | +13.33% |
| 2026-09-01 | 2.24 | 2.48 | 2.22 | 2.40 | 477K | +6.19% |
| 2026-08-31 | 2.33 | 2.33 | 2.23 | 2.26 | 609K | -3.42% |
| 2026-08-28 | 2.38 | 2.38 | 2.31 | 2.34 | 542K | -2.09% |
| 2026-08-27 | 2.44 | 2.50 | 2.39 | 2.39 | 707K | -2.85% |
| 2026-08-26 | 2.38 | 2.52 | 2.26 | 2.46 | 995K | +4.24% |
| 2026-08-25 | 2.32 | 2.46 | 2.28 | 2.36 | 531K | +2.61% |
| 2026-08-24 | 2.36 | 2.47 | 2.29 | 2.30 | 738K | -2.54% |
| 2026-08-21 | 2.28 | 2.37 | 2.20 | 2.36 | 728K | +4.42% |
| 2026-08-20 | 2.40 | 2.46 | 2.19 | 2.26 | 663K | -7.00% |
| 2026-08-19 | 2.25 | 2.53 | 2.15 | 2.43 | 3.76M | +9.95% |
| 2026-08-18 | 2.04 | 2.30 | 2.04 | 2.21 | 4.77M | +7.80% |
| 2026-08-17 | 1.91 | 2.09 | 1.90 | 2.05 | 914K | +4.59% |
| 2026-08-14 | 2.04 | 2.07 | 1.95 | 1.96 | 649K | -3.92% |
| 2026-08-13 | 2.15 | 2.15 | 1.98 | 2.04 | 1.29M | -5.12% |
| 2026-08-12 | 2.06 | 2.17 | 2.02 | 2.15 | 786K | +2.87% |
| 2026-08-11 | 1.68 | 2.13 | 1.65 | 2.09 | 5.54M | +23.67% |
| 2026-08-10 | 1.77 | 1.78 | 1.60 | 1.69 | 806K | -5.06% |
| 2026-08-07 | 1.84 | 2.00 | 1.74 | 1.78 | 1.25M | -2.73% |
| 2026-08-06 | 1.49 | 2.04 | 1.48 | 1.83 | 5.70M | +22.82% |
| 2026-08-05 | 1.56 | 1.57 | 1.46 | 1.49 | 392K | -3.25% |
| 2026-08-04 | 1.51 | 1.61 | 1.51 | 1.54 | 407K | +1.99% |
| 2026-08-03 | 1.51 | 1.54 | 1.46 | 1.51 | 360K | 0.00% |
| 2026-07-31 | 1.62 | 1.62 | 1.49 | 1.51 | 548K | -6.79% |
| 2026-07-30 | 1.52 | 1.67 | 1.51 | 1.62 | 453K | +6.58% |
| 2026-07-29 | 1.51 | 1.57 | 1.49 | 1.52 | 320K | 0.00% |
| 2026-07-28 | 1.51 | 1.54 | 1.48 | 1.52 | 343K | +0.66% |
| 2026-07-27 | 1.49 | 1.58 | 1.47 | 1.51 | 229K | +2.03% |
| 2026-07-24 | 1.50 | 1.51 | 1.46 | 1.48 | 325K | -0.67% |
ALEC Chart Terminal
Live VCP patterns, Cup & Handle overlays, support/resistance, and AI trade plans.
Live Breakouts Feed
High-probability breakout stocks crossing their pivot across 5 pattern engines.
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
Peer Comparison
Compare growth, multiples, and margins vs sector.
ALEC — Frequently Asked Questions
Quick answers to the most common questions about buying ALEC stock.
How has ALEC stock performed recently?
ALEC declined -42.7% over the past year, below its 5-year annualized CAGR of -39.8%. The stock trades below its 200-day moving average, reflecting the downtrend.
What is ALEC's all-time high price?
Alector, Inc. reached $43.32 on 2021-07-02. The 52-week high is $3.40. Current 1-year return of -42.7% places the stock further from historical peaks.
Where can I download ALEC historical price data?
This page provides ALEC daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 2019-2026, downloadable in CSV format.