The PE Ratio as of December 2025 (TTM) for Protagenic Therapeutics, Inc. (PTIX) is -0.13

According to Protagenic Therapeutics, Inc.’s latest financial reports and current stock price. The company's current PE Ratio is -0.13. This represents a change of -94.75% compared to the average of -2.48 of the last 4 quarters.

Protagenic Therapeutics, Inc. (PTIX) Historical PE Ratio (quarterly & annually)

How has PTIX PE Ratio performed in the past?

The mean historical PE Ratio of Protagenic Therapeutics, Inc. over the last ten years is -79.80. The current -0.13 PE Ratio has changed -83.71% with respect to the historical average. Over the past ten years (40 quarters), PTIX's PE Ratio was at its highest in in the March 2016 quarter at -0.15. The PE Ratio was at its lowest in in the September 2019 quarter at -658.26.

Protagenic Therapeutics, Inc. (PTIX) PE Ratio by Quarter and Year

Discovering the peaks and valleys of Protagenic Therapeutics, Inc. PE Ratio, unveiling quarterly and yearly fluctuations to gain insights into the company’s financial performance and market dynamics, offering valuable data for investors and analysts alike.

Protagenic Therapeutics, Inc. (PTIX) Average PE Ratio

How has PTIX PE Ratio performed in the past?

The current PE Ratio of Protagenic Therapeutics, Inc. (PTIX) is greater than its 3-year, greater than its 5-year, and greater than its 10-year historical averages

Protagenic Therapeutics, Inc. (PTIX) PE Ratio vs. Peers

How is PTIX’s PE Ratio compared to its peers?

Protagenic Therapeutics, Inc.’s PE Ratio is less than Salarius Pharmaceuticals, Inc. (-0.08), less than Lipella Pharmaceuticals Inc. (-0.00), less than Artelo Biosciences, Inc. (-0.11), less than Indaptus Therapeutics, Inc. (-0.07), less than Silexion Therapeutics Ltd. (-0.10), greater than Revelation Biosciences, Inc. (-0.24), less than Carisma Therapeutics, Inc. (-0.04), greater than SciSparc Ltd. (-0.57), greater than GT Biopharma, Inc. (-0.27), greater than Psyence Biomedical Ltd. (-0.23),

Build a custom stock screener for Protagenic Therapeutics, Inc. (PTIX) and other stocks

One of the best ways to find valuable stocks to invest in is to build a custom made screener in your Excel or Google Sheets spreadsheet. This allows you to compare thousands of companies like Protagenic Therapeutics, Inc. using the financials and key metrics that matter to you in a single view.

The easiest way to set this up is to use the Wisesheets add-on and set your spreadsheet like this:

Covering all these metrics from financial, data, dividend data, key metrics and more you can get all the data you want for over 50+ exchanges worldwide.

Get your free trial here.

Protagenic Therapeutics, Inc. (PTIX) and other stocks custom spreadsheet templates

The easiest way to analyze a company like Protagenic Therapeutics, Inc. or any others is to create a spreadsheet model that automatically retrieves all of the stock data you need.

Using Wisesheets you can set up a spreadsheet model like this with simple spreadsheet formulas. If you change the ticker you can get all of the data automatically updated for you.

Whether you need live data, historical price data, financials, dividend data, key metrics, analyst estimates, or anything else...Wisesheets has you covered.