Range Low Price High Price Comment
30 days $0.340 $0.530 Wednesday, 3rd Jun 2026 CYAN stock ended at $0.440. During the day the stock fluctuated 0% from a day low at $0.440 to a day high of $0.440.
90 days $0.255 $0.530
52 weeks $0.240 $0.550

Historical Cyanotech Corporation prices

Date Open High Low Close Volume
Jun 03, 2026 $0.440 $0.440 $0.440 $0.440 0
Jun 02, 2026 $0.440 $0.440 $0.440 $0.440 0
Jun 01, 2026 $0.440 $0.440 $0.440 $0.440 334
May 29, 2026 $0.370 $0.370 $0.370 $0.370 250
May 28, 2026 $0.370 $0.370 $0.370 $0.370 0
May 27, 2026 $0.370 $0.370 $0.370 $0.370 0
May 26, 2026 $0.400 $0.520 $0.370 $0.370 1 739
May 22, 2026 $0.520 $0.520 $0.520 $0.520 463
May 21, 2026 $0.380 $0.380 $0.380 $0.380 0
May 20, 2026 $0.380 $0.380 $0.380 $0.380 0
May 19, 2026 $0.380 $0.380 $0.380 $0.380 0
May 18, 2026 $0.380 $0.380 $0.380 $0.380 0
May 15, 2026 $0.530 $0.530 $0.380 $0.380 2 024
May 14, 2026 $0.380 $0.380 $0.380 $0.380 0
May 13, 2026 $0.380 $0.380 $0.380 $0.380 0
May 12, 2026 $0.380 $0.380 $0.380 $0.380 1 052
May 11, 2026 $0.340 $0.412 $0.340 $0.412 3
May 08, 2026 $0.389 $0.389 $0.389 $0.389 0
May 07, 2026 $0.389 $0.389 $0.389 $0.389 0
May 06, 2026 $0.389 $0.389 $0.389 $0.389 0
May 05, 2026 $0.389 $0.389 $0.389 $0.389 0
May 04, 2026 $0.389 $0.389 $0.389 $0.389 0
May 01, 2026 $0.389 $0.389 $0.389 $0.389 0
Apr 30, 2026 $0.389 $0.389 $0.389 $0.389 0
Apr 29, 2026 $0.389 $0.389 $0.389 $0.389 0

FAQ

What are historical stock prices?
Historical stock prices refer to a stock’s recorded prices at various past points. These prices include several key figures that help investors and analysts evaluate a stock’s performance over time:
Open: Open price for the trading day.
High: Highest price for the trading day.
Low: Lowest price for the trading day.
Close: Close price for the trading day.

Additionally, historical prices often include:
Volume is the number of shares traded during the day. It indicates how actively a stock was traded and can provide insights into market sentiment and liquidity.

How can I use CYAN stock historical prices to predict future price movements?
Trend Analysis: Examine the CYAN stock’s historical trends to identify patterns that might continue.
Moving Averages: Use moving averages to detect potential reversal points.
Momentum Indicators: Apply indicators like RSI or MACD to assess the momentum and strength of price movements.
Volume Analysis: Analyze trading volume alongside price changes to gauge trend strength.
Statistical Methods: Use statistical tools such as regression analysis to model and forecast future prices based on past data.
These techniques can provide insights but should be used with risk management practices to mitigate potential losses.

What impact do stock splits have on historical price data?
When a company performs a stock split, it adjusts the historical price data to reflect the new, lower trading price as if it had always been that way.

This ensures consistency for anyone analyzing the stock’s past prices. The adjustment helps prevent misleading signals on charts, such as false sell signals or bearish trends that aren’t there. For instance, in a 2-for-1 stock split, the price per share is cut in half, which would otherwise appear as a dramatic drop on the chart. If someone didn’t know about the split, they might wrongly think something negative happened to the company. Most technical indicators would also react to this apparent drop by signaling to sell.

A stock split, while making the shares seem more affordable and potentially more attractive to investors, doesn’t alter the company’s fundamental value.

Why do the CYAN stock historical prices show a range for periods like 30 days, 90 days, and 52 weeks?
The range provides the lowest and highest prices at which the stock has traded during the specified period. This helps investors understand the stock’s volatility and price variability within that timeframe.

How can I use historical price volatility to assess risk?
High price volatility historically indicates higher risk and potentially higher returns. Investors can gauge the stock’s risk level by examining the range between high and low prices over various periods.
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ABOUT CYANOTECH CORPORATION
Cyanotech
Cyanotech Corporation engages in the cultivation, production, and sale of natural products derived from microalgae worldwide. The company's products include BioAstin Hawaiian Astaxanthin, a dietary antioxidant to enhance skin, and to support eye, joint and immune health, as well as used as a human dietary supplement and dietary ingredient; and Hawaiian Spirulina Pacifica, a nutrient-rich dietary supplement, which is used for extra energy, strengt...
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