Aldeyra Therapeutics, Inc. (ALDX) Stock Price History
Historical prices from 2014 to 2026
- 1M
- +28.2%
- 3M
- +46.7%
- YTD
- -52.2%
- 1Y
- -48.7%
- 3Y
- -33.9%
- 5Y
- -26.5%
Loading 10-year price history...
ALDX Historical Performance
ALDX Annual Returns
Year-by-year price performance · 2014–2026
- 2014 annual price return
- +0.3%
- 2015 annual price return
- -7.1%
- 2016 annual price return
- -19.9%
- 2017 annual price return
- +33.3%
- 2018 annual price return
- +18.6%
- 2019 annual price return
- -31.7%
- 2020 annual price return
- +15.1%
- 2021 annual price return
- -38.7%
- 2022 annual price return
- +63.0%
- 2023 annual price return
- -49.6%
- 2024 annual price return
- +41.0%
- 2025 annual price return
- -0.8%
- 2026 annual price return
- +16.9%
ALDX Stock Price Trajectory (2014–2026)
As of July 8, 2026, Aldeyra Therapeutics, Inc. (ALDX) trades at $2.23, representing a -48.7% return over the past year. The stock has delivered a -78.5% total return over five years (-26.5% CAGR), reflecting challenging market conditions.
The stock reached its all-time high of $16.70 on September 26, 2018. From this peak, ALDX has corrected -86.6%, currently trading 41% below its 200-day moving average, suggesting potential weakness.
When compared to Healthcare sector peers OCUL (+7.5% 1Y), KALA (-99.4% 1Y), and HALO (+50.4% 1Y), ALDX has underperformed the peer group average. Compare ALDX vs OCUL →
ALDX Historical Price Data · from 2014
Rows 1–50 of 3,063| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-07-07 | 2.28 | 2.35 | 2.19 | 2.23 | 2.13M | -2.19% |
| 2026-07-06 | 2.21 | 2.36 | 2.21 | 2.28 | 1.20M | +0.44% |
| 2026-07-02 | 2.40 | 2.52 | 2.25 | 2.27 | 2.10M | -6.58% |
| 2026-07-01 | 2.13 | 2.53 | 2.10 | 2.43 | 3.40M | +14.08% |
| 2026-06-30 | 2.06 | 2.16 | 2.05 | 2.13 | 2.14M | +3.90% |
| 2026-06-29 | 1.84 | 2.08 | 1.82 | 2.05 | 647K | +12.02% |
| 2026-06-26 | 1.82 | 1.88 | 1.71 | 1.83 | 0 | +1.67% |
| 2026-06-25 | 1.96 | 1.96 | 1.75 | 1.80 | 2.03M | -5.26% |
| 2026-06-24 | 2.06 | 2.09 | 1.85 | 1.90 | 2.03M | -5.94% |
| 2026-06-23 | 2.00 | 2.21 | 2.00 | 2.02 | 2.43M | -1.46% |
| 2026-06-22 | 1.95 | 2.15 | 1.95 | 2.05 | 1.66M | +4.59% |
| 2026-06-18 | 1.88 | 1.99 | 1.87 | 1.96 | 2.18M | +7.10% |
| 2026-06-17 | 1.78 | 1.92 | 1.77 | 1.83 | 1.28M | +2.81% |
| 2026-06-16 | 1.77 | 1.84 | 1.75 | 1.78 | 922K | +1.14% |
| 2026-06-15 | 1.83 | 1.83 | 1.74 | 1.76 | 609K | 0.00% |
| 2026-06-12 | 1.71 | 1.77 | 1.70 | 1.76 | 827K | +2.92% |
| 2026-06-11 | 1.68 | 1.73 | 1.66 | 1.71 | 1.17M | +1.18% |
| 2026-06-10 | 1.71 | 1.80 | 1.65 | 1.69 | 896K | -1.74% |
| 2026-06-09 | 1.76 | 1.83 | 1.68 | 1.72 | 922K | -1.15% |
| 2026-06-08 | 1.90 | 1.97 | 1.74 | 1.74 | 1.77M | +6.75% |
| 2026-06-05 | 1.75 | 1.76 | 1.61 | 1.63 | 873K | -7.39% |
| 2026-06-04 | 1.89 | 1.93 | 1.75 | 1.76 | 1.06M | -5.38% |
| 2026-06-03 | 1.64 | 1.87 | 1.59 | 1.86 | 1.95M | +13.41% |
| 2026-06-02 | 1.65 | 1.69 | 1.58 | 1.64 | 881K | -1.20% |
| 2026-06-01 | 1.73 | 1.74 | 1.62 | 1.66 | 678K | -5.14% |
| 2026-05-29 | 1.73 | 1.75 | 1.68 | 1.75 | 556K | 0.00% |
| 2026-05-28 | 1.73 | 1.79 | 1.69 | 1.75 | 1.21M | +2.34% |
| 2026-05-27 | 1.74 | 1.78 | 1.68 | 1.71 | 764K | -3.93% |
| 2026-05-26 | 1.55 | 1.78 | 1.53 | 1.78 | 1.96M | +14.84% |
| 2026-05-22 | 1.57 | 1.61 | 1.53 | 1.55 | 462K | -2.52% |
| 2026-05-21 | 1.52 | 1.59 | 1.51 | 1.59 | 621K | +2.58% |
| 2026-05-20 | 1.54 | 1.57 | 1.50 | 1.55 | 799K | +0.65% |
| 2026-05-19 | 1.58 | 1.58 | 1.52 | 1.54 | 708K | -3.75% |
| 2026-05-18 | 1.67 | 1.69 | 1.58 | 1.60 | 1.02M | -4.76% |
| 2026-05-15 | 1.63 | 1.71 | 1.60 | 1.68 | 1.31M | +1.20% |
| 2026-05-14 | 1.71 | 1.71 | 1.64 | 1.66 | 705K | -2.35% |
| 2026-05-13 | 1.70 | 1.72 | 1.65 | 1.70 | 1.33M | -0.58% |
| 2026-05-12 | 1.75 | 1.80 | 1.70 | 1.71 | 714K | -2.84% |
| 2026-05-11 | 1.73 | 1.77 | 1.71 | 1.76 | 705K | +1.73% |
| 2026-05-08 | 1.70 | 1.77 | 1.70 | 1.73 | 808K | 0.00% |
| 2026-05-07 | 1.73 | 1.75 | 1.68 | 1.73 | 632K | -0.57% |
| 2026-05-06 | 1.71 | 1.86 | 1.69 | 1.74 | 1.12M | +1.16% |
| 2026-05-05 | 1.64 | 1.73 | 1.59 | 1.72 | 1.04M | +6.17% |
| 2026-05-04 | 1.57 | 1.68 | 1.57 | 1.62 | 783K | +1.89% |
| 2026-05-01 | 1.52 | 1.60 | 1.51 | 1.59 | 741K | +4.61% |
| 2026-04-30 | 1.51 | 1.60 | 1.49 | 1.52 | 1.11M | +1.33% |
| 2026-04-29 | 1.55 | 1.59 | 1.47 | 1.50 | 701K | -4.46% |
| 2026-04-28 | 1.57 | 1.62 | 1.56 | 1.57 | 725K | -0.63% |
| 2026-04-27 | 1.54 | 1.60 | 1.52 | 1.58 | 1.19M | +1.94% |
| 2026-04-24 | 1.58 | 1.59 | 1.51 | 1.55 | 1.47M | -3.13% |
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.
ALDX — Frequently Asked Questions
Quick answers to the most common questions about buying ALDX stock.
How has ALDX stock performed recently?
ALDX declined -48.7% over the past year, below its 5-year annualized CAGR of -26.5%. The stock trades below its 200-day moving average, reflecting the downtrend.
What is ALDX's all-time high price?
Aldeyra Therapeutics, Inc. reached $16.70 on 2018-09-26. The 52-week high is $6.18. Current 1-year return of -48.7% places the stock further from historical peaks.
Where can I download ALDX historical price data?
This page provides ALDX daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 2014-2026, downloadable in CSV format.