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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 February 12, 2026, is $5.25.
  • 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 $1.14 on April 03, 2025. Since then, Aldeyra Therapeutics Inc's stock price has risen over 360.53% to $5.25 now.
  • The 52-week high stock price for ALDX is $7.20, representing a 37.14% increase from the current share price, occurred on March 12, 2025.
  • The 52-week low stock price for ALDX is $1.14, indicating a -78.29% decrease from the current share price, occurred on April 03, 2025.
  • 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
Feb 12, 2026 $5.56 $5.16 $0.405 1,067,613.0 -1.32%
Feb 11, 2026 $5.52 $5.28 $0.24 905,992.0 -2.92%
Feb 10, 2026 $5.67 $5.45 $0.22 587,679.0 -1.44%
Feb 09, 2026 $5.66 $5.41 $0.245 365,173.0 +0.54%
Feb 06, 2026 $5.61 $5.15 $0.46 973,376.0 +8.64%
Feb 05, 2026 $5.44 $5.08 $0.365 600,781.0 -2.49%
Feb 04, 2026 $5.48 $4.92 $0.5585 935,512.0 -3.51%
Feb 03, 2026 $5.60 $5.31 $0.29 555,884.0 -0.37%
Feb 02, 2026 $5.59 $5.25 $0.34 355,983.0 +1.31%
Jan 30, 2026 $5.93 $5.26 $0.665 742,845.0 +0.75%
Jan 29, 2026 $5.44 $5.22 $0.215 525,356.0 -1.85%
Jan 28, 2026 $5.55 $5.37 $0.185 595,661.0 -2.17%
Jan 27, 2026 $5.65 $5.25 $0.40 865,220.0 +5.93%
Jan 26, 2026 $5.31 $5.05 $0.2579 620,218.0 +0.77%
Jan 23, 2026 $5.43 $5.09 $0.3394 1,255,956.0 -0.57%
Jan 22, 2026 $5.39 $4.96 $0.425 957,359.0 +4.61%
Jan 21, 2026 $5.13 $4.74 $0.395 1,191,912.0 +5.05%
Jan 20, 2026 $4.83 $4.39 $0.435 1,019,977.0 +2.59%
Jan 16, 2026 $4.74 $4.22 $0.52 1,634,445.0 +4.99%
Jan 15, 2026 $4.45 $4.20 $0.25 835,372.0 +4.01%
Jan 14, 2026 $4.29 $4.08 $0.215 593,883.0 +2.42%

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
Feb, 2026 $5.67 $4.92 $0.75 7,415,606.0 -2.05%
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%
$44.80
price up icon 1.24%
$26.75
price down icon 0.19%
$100.75
price up icon 1.93%
$105.76
price down icon 3.31%
$146.17
price down icon 1.52%
biotechnology ONC
$346.42
price down icon 1.38%
Cap:     |  Volume (24h):