Alector, Inc. (ALEC) Stock Price History
Historical prices from 2019 to 2026
- 1M
- -17.5%
- 3M
- -14.6%
- YTD
- +14.4%
- 1Y
- +19.9%
- 3Y
- -37.9%
- 5Y
- -39.3%
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
- +58.8%
ALEC Stock Price Trajectory (2019–2026)
As of June 22, 2026, Alector, Inc. (ALEC) trades at $1.75, representing a +19.9% return over the past year. The stock has delivered a -91.8% total return over five years (-39.3% 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 -96.0%, currently trading 16% below its 200-day moving average, suggesting potential weakness.
When compared to Healthcare sector peers PRTA (+55.3% 1Y), ACAD (-5.8% 1Y), and SAVA (-36.2% 1Y), ALEC has underperformed the peer group average. Compare ALEC vs PRTA →
ALEC Historical Price Data · from 2019
Rows 1–50 of 1,852| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-06-18 | 1.58 | 1.76 | 1.56 | 1.75 | 979K | +12.18% |
| 2026-06-17 | 1.55 | 1.59 | 1.53 | 1.56 | 477K | +1.30% |
| 2026-06-16 | 1.47 | 1.55 | 1.41 | 1.54 | 710K | +4.05% |
| 2026-06-15 | 1.56 | 1.59 | 1.46 | 1.48 | 623K | -3.27% |
| 2026-06-12 | 1.58 | 1.60 | 1.53 | 1.53 | 262K | -2.55% |
| 2026-06-11 | 1.49 | 1.74 | 1.49 | 1.57 | 424K | +3.29% |
| 2026-06-10 | 1.65 | 1.66 | 1.49 | 1.52 | 421K | -6.75% |
| 2026-06-09 | 1.64 | 1.68 | 1.58 | 1.63 | 432K | -0.61% |
| 2026-06-08 | 1.65 | 1.67 | 1.57 | 1.64 | 663K | +0.31% |
| 2026-06-05 | 1.78 | 1.80 | 1.63 | 1.64 | 363K | -9.67% |
| 2026-06-04 | 1.79 | 1.92 | 1.79 | 1.81 | 437K | +1.97% |
| 2026-06-03 | 1.89 | 1.94 | 1.71 | 1.77 | 1.69M | -8.97% |
| 2026-06-02 | 2.07 | 2.07 | 1.92 | 1.95 | 1.56M | -5.80% |
| 2026-06-01 | 2.13 | 2.16 | 2.07 | 2.07 | 703K | -4.17% |
| 2026-05-29 | 2.15 | 2.25 | 2.05 | 2.16 | 984K | +0.47% |
| 2026-05-28 | 2.21 | 2.24 | 2.10 | 2.15 | 1.30M | -2.71% |
| 2026-05-27 | 2.20 | 2.28 | 2.17 | 2.21 | 427K | +0.91% |
| 2026-05-26 | 2.20 | 2.32 | 2.13 | 2.19 | 432K | -0.90% |
| 2026-05-22 | 2.22 | 2.27 | 2.17 | 2.21 | 0 | 0.00% |
| 2026-05-21 | 2.07 | 2.22 | 2.01 | 2.21 | 920K | +4.25% |
| 2026-05-20 | 2.13 | 2.23 | 2.11 | 2.12 | 896K | +0.47% |
| 2026-05-19 | 2.05 | 2.16 | 2.02 | 2.11 | 788K | -0.47% |
| 2026-05-18 | 2.13 | 2.18 | 2.04 | 2.12 | 814K | -1.85% |
| 2026-05-15 | 2.25 | 2.29 | 2.14 | 2.16 | 1.10M | -6.09% |
| 2026-05-14 | 2.22 | 2.37 | 2.20 | 2.30 | 768K | +6.98% |
| 2026-05-13 | 2.12 | 2.21 | 2.09 | 2.15 | 458K | -0.46% |
| 2026-05-12 | 2.04 | 2.21 | 2.03 | 2.16 | 435K | +5.37% |
| 2026-05-11 | 2.10 | 2.20 | 2.00 | 2.05 | 383K | -2.38% |
| 2026-05-08 | 2.13 | 2.33 | 2.10 | 2.10 | 714K | -13.93% |
| 2026-05-07 | 2.51 | 2.56 | 2.41 | 2.44 | 268K | -5.06% |
| 2026-05-06 | 2.60 | 2.69 | 2.57 | 2.57 | 418K | 0.00% |
| 2026-05-05 | 2.55 | 2.62 | 2.53 | 2.57 | 351K | +2.39% |
| 2026-05-04 | 2.35 | 2.54 | 2.35 | 2.51 | 447K | +6.36% |
| 2026-05-01 | 2.33 | 2.38 | 2.29 | 2.36 | 379K | -0.42% |
| 2026-04-30 | 2.29 | 2.44 | 2.15 | 2.37 | 634K | +3.04% |
| 2026-04-29 | 2.36 | 2.38 | 2.27 | 2.30 | 285K | -3.77% |
| 2026-04-28 | 2.35 | 2.42 | 2.35 | 2.39 | 296K | +1.70% |
| 2026-04-27 | 2.41 | 2.46 | 2.33 | 2.35 | 593K | -2.49% |
| 2026-04-24 | 2.42 | 2.52 | 2.36 | 2.41 | 319K | -0.82% |
| 2026-04-23 | 2.50 | 2.50 | 2.38 | 2.43 | 279K | -0.82% |
| 2026-04-22 | 2.48 | 2.70 | 2.37 | 2.45 | 1.42M | -0.41% |
| 2026-04-21 | 2.65 | 2.67 | 2.45 | 2.46 | 274K | -9.06% |
| 2026-04-20 | 2.56 | 2.74 | 2.56 | 2.71 | 319K | +5.25% |
| 2026-04-17 | 2.62 | 2.62 | 2.49 | 2.57 | 333K | +0.78% |
| 2026-04-16 | 2.52 | 2.67 | 2.48 | 2.55 | 560K | -1.16% |
| 2026-04-15 | 2.54 | 2.61 | 2.50 | 2.58 | 537K | +7.05% |
| 2026-04-14 | 2.35 | 2.44 | 2.34 | 2.41 | 393K | +3.43% |
| 2026-04-13 | 2.41 | 2.44 | 2.27 | 2.33 | 362K | -4.90% |
| 2026-04-10 | 2.40 | 2.53 | 2.40 | 2.45 | 572K | +2.08% |
| 2026-04-09 | 2.38 | 2.42 | 2.34 | 2.40 | 267K | -0.83% |
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
DCA Calculator
See how regular investing compounds over time.
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 returned +19.9% over the past year, beating its 5-year annualized CAGR of -39.3%. The stock trades below its 200-day moving average, confirming the uptrend.
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 +19.9% places the stock closer to 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.