NASDAQ:PTIX

Protagenic Therapeutics . Common Stock Stock Price (Quote)

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$0.180
+0.0134 (+8.02%)
At Close: Jul 31, 2026

Range Low Price High Price Comment
30 days $0.128 $0.360 Friday, 31st Jul 2026 PTIX stock ended at $0.180. This is 8.02% more than the trading day before Thursday, 30th Jul 2026. During the day the stock fluctuated 0% from a day low at $0.180 to a day high of $0.180.
90 days $0.128 $0.82
52 weeks $0.128 $6.20

Historical Protagenic Therapeutics, Inc. Common Stock prices

Date Open High Low Close Volume
Jul 31, 2026 $0.180 $0.180 $0.180 $0.180 4
Jul 30, 2026 $0.189 $0.189 $0.140 $0.167 28 225
Jul 29, 2026 $0.140 $0.140 $0.128 $0.128 523
Jul 28, 2026 $0.245 $0.245 $0.140 $0.140 14 199
Jul 27, 2026 $0.225 $0.250 $0.177 $0.219 11 634
Jul 24, 2026 $0.216 $0.216 $0.216 $0.216 0
Jul 23, 2026 $0.216 $0.216 $0.216 $0.216 0
Jul 22, 2026 $0.216 $0.216 $0.216 $0.216 0
Jul 21, 2026 $0.290 $0.290 $0.216 $0.216 400
Jul 20, 2026 $0.260 $0.260 $0.260 $0.260 0
Jul 17, 2026 $0.260 $0.260 $0.260 $0.260 0
Jul 16, 2026 $0.260 $0.260 $0.260 $0.260 0
Jul 15, 2026 $0.260 $0.260 $0.260 $0.260 0
Jul 14, 2026 $0.260 $0.260 $0.260 $0.260 0
Jul 13, 2026 $0.260 $0.260 $0.260 $0.260 0
Jul 10, 2026 $0.220 $0.260 $0.220 $0.260 3 032
Jul 09, 2026 $0.180 $0.200 $0.170 $0.200 17 000
Jul 08, 2026 $0.180 $0.180 $0.180 $0.180 909
Jul 07, 2026 $0.220 $0.220 $0.200 $0.200 8 209
Jul 06, 2026 $0.230 $0.230 $0.230 $0.230 500
Jul 02, 2026 $0.350 $0.350 $0.201 $0.230 57 594
Jul 01, 2026 $0.360 $0.360 $0.360 $0.360 100
Jun 30, 2026 $0.370 $0.370 $0.370 $0.370 0
Jun 29, 2026 $0.370 $0.370 $0.370 $0.370 5 000
Jun 26, 2026 $0.360 $0.360 $0.360 $0.360 428

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 PTIX stock historical prices to predict future price movements?
Trend Analysis: Examine the PTIX 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 PTIX 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 PROTAGENIC THERAPEUTICS, INC. COMMON STOCK
Protagenic Therapeutics . Common Stock
Protagenic Therapeutics, Inc., a biopharmaceutical company, engages in the discovery and development of therapeutics to treat stress-related neuropsychiatric and mood disorders. Its lead compound is PT00114, a synthetic form of teneurin carboxy-terminal associated peptide, an endogenous brain signaling peptide that can dampen overactive stress responses. The company is based in New York, New York....
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