1.56
price up icon8.33%   0.12
pre-market  Pre-market:  1.54   -0.02   -1.28%
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Aldeyra Therapeutics Inc Stock (ALDX) Price History

The historical daily chart and data for Aldeyra Therapeutics Inc stock (ALDX), show that the latest closing stock price as of August 14, 2026, is $1.56.
  • Aldeyra Therapeutics Inc all-time high stock price is $16.70, occurred on September 26, 2018.
  • The lowest Aldeyra Therapeutics Inc stock price recorded was $1.07 on March 17, 2026. Since then, Aldeyra Therapeutics Inc's stock price has risen over 45.79% to $1.56 now.
  • The 52-week high stock price for ALDX is $6.175, representing a 295.83% increase from the current share price, occurred on August 28, 2025.
  • The 52-week low stock price for ALDX is $1.07, indicating a -31.41% decrease from the current share price, occurred on March 17, 2026.
  • The closing price of Aldeyra Therapeutics Inc (ALDX) stock in the beginning of 2025 was $4.27. The stock closed the year at $6.96, a gain of over 63.00% for the year.
The table below shows more information about ALDX historical price data:
Date High Low High - Low Volume % Change
Aug 14, 2026 $1.57 $1.45 $0.125 829,953.0 +8.33%
Aug 13, 2026 $1.57 $1.44 $0.13 1,356,517.0 -5.26%
Aug 12, 2026 $1.58 $1.50 $0.0796 938,331.0 +0.66%
Aug 11, 2026 $1.54 $1.50 $0.04 473,892.0 +0.00%
Aug 10, 2026 $1.56 $1.51 $0.055 866,930.0 -2.58%
Aug 07, 2026 $1.61 $1.52 $0.09 1,171,173.0 -2.52%
Aug 06, 2026 $1.61 $1.53 $0.085 573,752.0 -0.63%
Aug 05, 2026 $1.63 $1.55 $0.08 822,637.0 +3.23%
Aug 04, 2026 $1.60 $1.50 $0.10 975,417.0 +1.31%
Aug 03, 2026 $1.55 $1.49 $0.06 782,721.0 -0.65%
Jul 31, 2026 $1.63 $1.52 $0.11 510,547.0 -3.75%
Jul 30, 2026 $1.67 $1.59 $0.075 548,885.0 -0.62%
Jul 29, 2026 $1.63 $1.53 $0.10 742,144.0 +1.90%
Jul 28, 2026 $1.62 $1.49 $0.13 916,756.0 -0.32%
Jul 27, 2026 $1.61 $1.53 $0.08 1,232,045.0 +4.28%
Jul 24, 2026 $1.60 $1.48 $0.125 1,124,932.0 -1.94%
Jul 23, 2026 $1.72 $1.54 $0.18 1,407,768.0 -8.82%
Jul 22, 2026 $1.75 $1.66 $0.095 1,039,231.0 -2.86%
Jul 21, 2026 $1.78 $1.69 $0.09 1,105,904.0 +2.94%
Jul 20, 2026 $1.76 $1.65 $0.11 1,130,935.0 +0.59%

Aldeyra Therapeutics Inc Stock (ALDX) Year by Year Price History

In this detailed analysis, we present a comprehensive overview of the price movements of Aldeyra Therapeutics Inc stock over the years. By exploring the year-by-year data, investors can gain valuable insights into the historical performance and volatility of ALDX shares. From significant milestones and fluctuations to notable trends, this in-depth examination of Aldeyra Therapeutics Inc stock price history provides a foundation for understanding how the company's stock has evolved over time.

Aldeyra Therapeutics Inc Stock (ALDX) Price History 2026

Month High Low High - Low Volume % Change
Aug, 2026 $1.63 $1.44 $0.19 9,621,276.0 +1.30%
Jul, 2026 $2.53 $1.48 $1.05 31,860,249.0 -27.70%
Jun, 2026 $2.21 $1.58 $0.63 34,875,343.0 +21.71%
May, 2026 $1.86 $1.50 $0.355 18,256,156.0 +15.13%
Apr, 2026 $1.89 $1.47 $0.42 34,183,039.0 -10.06%
Mar, 2026 $5.74 $1.07 $4.67 139,238,562.0 -69.05%
Feb, 2026 $5.67 $4.85 $0.82 14,316,701.0 +1.87%
Jan, 2026 $5.93 $3.94 $1.98 17,498,085.0 +3.47%

Aldeyra Therapeutics Inc Stock (ALDX) Price History 2025

Month High Low High - Low Volume % Change
Dec, 2025 $5.75 $3.94 $1.81 32,081,850.0 -6.02%
Nov, 2025 $5.68 $4.53 $1.15 13,330,225.0 +8.09%
Oct, 2025 $5.79 $4.70 $1.09 15,427,522.0 -2.87%
Sep, 2025 $5.93 $4.78 $1.15 16,764,394.0 -10.62%
Aug, 2025 $6.17 $4.23 $1.94 18,012,006.0 +17.03%
Jul, 2025 $5.66 $3.73 $1.93 25,779,329.0 +30.29%
Jun, 2025 $4.00 $2.08 $1.92 20,123,731.0 +78.14%
May, 2025 $2.89 $1.90 $0.99 24,671,866.0 -18.87%
Apr, 2025 $5.91 $1.14 $4.77 69,625,054.0 -53.91%
Mar, 2025 $7.20 $5.24 $1.96 17,258,451.0 +12.52%
Feb, 2025 $6.92 $4.78 $2.14 8,563,824.0 -2.48%
Jan, 2025 $5.58 $4.66 $0.925 6,716,553.0 +5.01%

Aldeyra Therapeutics Inc Stock (ALDX) Price History 2024

Month High Low High - Low Volume % Change
Dec, 2024 $5.46 $4.67 $0.79 7,855,780.0 +2.45%
Nov, 2024 $5.74 $4.09 $1.65 11,281,906.0 -6.84%
Oct, 2024 $6.17 $5.03 $1.14 8,770,966.0 -2.41%
Sep, 2024 $6.55 $5.26 $1.29 10,395,206.0 -6.34%
Aug, 2024 $5.85 $3.14 $2.71 15,669,018.0 +46.07%
Jul, 2024 $4.39 $3.10 $1.29 5,488,034.0 +19.03%
Jun, 2024 $4.24 $3.14 $1.10 7,821,654.0 -14.25%
May, 2024 $4.38 $3.65 $0.725 6,769,433.0 -2.03%
Apr, 2024 $4.97 $3.13 $1.84 16,957,630.0 +20.49%
Mar, 2024 $4.34 $2.71 $1.63 10,759,703.0 -9.67%
Feb, 2024 $3.85 $3.06 $0.79 7,654,017.0 +15.65%
Jan, 2024 $3.69 $2.96 $0.73 12,074,443.0 -10.83%
$63.32
price down icon 0.52%
$58.60
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$36.20
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$123.74
price down icon 2.05%
$228.65
price up icon 0.67%
ONC ONC
$347.48
price down icon 2.40%
Cap:     |  Volume (24h):