Protagenic Therapeutics Inc (PTIX)

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Protagenic Therapeutics Inc Stock (PTIX) Price History

The historical daily chart and data for Protagenic Therapeutics Inc stock (PTIX), show that the latest closing stock price as of April 01, 2026, is $0.5709.

Protagenic Therapeutics Inc all-time high stock price is $26.18, occurred on May 22, 2024.
The lowest Protagenic Therapeutics Inc stock price recorded was $0.00 on November 24, 2023. Since then, Protagenic Therapeutics Inc's stock price has risen over to $0.5709 now.
The 52-week high stock price for PTIX is $0.75, representing a 31.37% increase from the current share price, occurred on March 26, 2026.
The 52-week low stock price for PTIX is $0.5003, indicating a -12.37% decrease from the current share price, occurred on March 26, 2026.
The closing price of Protagenic Therapeutics Inc (PTIX) stock in the beginning of 2025 was $5.60. The stock closed the year at $1.60, a loss of over -71.43% for the year.

The table below shows more information about PTIX historical price data:

Daily

Weekly

Monthly

30D

60D

YTD

Date	High	Low	High - Low	Volume	% Change
Apr 01, 2026	$0.676	$0.5201	$0.1559	1,227.0	+9.63%
Mar 27, 2026	$0.74	$0.52	$0.22	1,217.0	-30.67%
Mar 26, 2026	$0.75	$0.5003	$0.2497	6,177.0	+7.14%
Mar 24, 2026	$0.70	$0.70	$0.00	344.0	+6.06%
Mar 20, 2026	$0.73	$0.62	$0.11	5,338.0	-5.04%

Protagenic Therapeutics Inc Stock (PTIX) Year by Year Price History

In this detailed analysis, we present a comprehensive overview of the price movements of Protagenic 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 PTIX shares. From significant milestones and fluctuations to notable trends, this in-depth examination of Protagenic Therapeutics Inc stock price history provides a foundation for understanding how the company's stock has evolved over time.