NASDAQ:PTIX Atrinsic (PTIX) Stock Price, News & Analysis $3.15 +0.05 (+1.61%) Closing price 09/5/2025 04:00 PM EasternExtended Trading$3.13 -0.02 (-0.63%) As of 09/5/2025 07:46 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Stock Analysis Stock AnalysisChartCompetitorsEarningsHeadlinesInsider TradesSEC FilingsShort InterestTrendsBuy This Stock About Atrinsic Stock (NASDAQ:PTIX) 30 days 90 days 365 days Advanced Chart View Price History Chart DataSkip Price History Chart Get Atrinsic alerts:Sign Up Key Stats Today's Range$3.10▼$3.2150-Day Range$2.28▼$4.5152-Week Range$2.25▼$15.54Volume127,437 shsAverage Volume8.34 million shsMarket Capitalization$1.86 millionP/E RatioN/ADividend YieldN/APrice TargetN/AConsensus RatingN/A Company Overview 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 comprises PT00114, a synthetic form of teneurin carboxy-terminal associated peptide, an endogenous brain signaling peptide that can dampen overactive stress responses. Protagenic Therapeutics, Inc. is headquartered in New York, New York. Read More Atrinsic Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks6th Percentile Overall ScorePTIX MarketRank™: Atrinsic scored higher than 6% of companies evaluated by MarketBeat. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's OpinionN/AAnalyst RatingN/A Consensus RatingThere is not enough analysis data for Atrinsic. Earnings and Valuation0.0 / 5Proj. Earnings GrowthN/A Price to Earnings Ratio vs. the MarketThe P/E ratio of Atrinsic is -0.24, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Earnings Ratio vs. SectorThe P/E ratio of Atrinsic is -0.24, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Book Value per Share RatioAtrinsic has a P/B Ratio of 1.61. P/B Ratios below 3 indicates that a company is reasonably valued with respect to its assets and liabilities.Read more about Atrinsic's valuation and earnings. Short Interest2.0 / 5Short Interest LevelBearish Percentage of Shares Shorted5.70% of the float of Atrinsic has been sold short.Short Interest Ratio / Days to CoverAtrinsic has a short interest ratio ("days to cover") of 0, which is generally considered an acceptable ratio of short interest to trading volume.Change versus previous monthShort interest in Atrinsic has recently increased by 291.74%, indicating that investor sentiment is decreasing significantly. Dividend0.0 / 5Dividend StrengthN/A Dividend YieldAtrinsic does not currently pay a dividend.Dividend GrowthAtrinsic does not have a long track record of dividend growth. Sustainability and ESGN/AEnvironmental ScoreN/A Percentage of Shares Shorted5.70% of the float of Atrinsic has been sold short.Short Interest Ratio / Days to CoverAtrinsic has a short interest ratio ("days to cover") of 0, which is generally considered an acceptable ratio of short interest to trading volume.Change versus previous monthShort interest in Atrinsic has recently increased by 291.74%, indicating that investor sentiment is decreasing significantly. News and Social Media1.7 / 5News SentimentN/A News SentimentAtrinsic has a news sentiment score of -1.00. This score is calculated as an average of sentiment of articles about the company over the last seven days and ranges from 2 (good news) to -2 (bad news). This is a lower news sentiment than the 0.72 average news sentiment score of Medical companies.News Coverage This WeekMarketBeat has tracked 1 news article for Atrinsic this week, compared to 0 articles on an average week.Search Interest17 people have searched for PTIX on MarketBeat in the last 30 days. This is an increase of 1,600% compared to the previous 30 days.MarketBeat Follows5 people have added Atrinsic to their MarketBeat watchlist in the last 30 days. Company Ownership1.7 / 5Insider TradingN/A Insider Buying vs. Insider SellingIn the past three months, Atrinsic insiders have not sold or bought any company stock.Percentage Held by Insiders35.00% of the stock of Atrinsic is held by insiders. A high percentage of insider ownership can be a sign of company health.Percentage Held by InstitutionsOnly 7.97% of the stock of Atrinsic is held by institutions.Read more about Atrinsic's insider trading history. 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PTIX Stock News HeadlinesProtagenic Therapeutics Announces Grant of new patent in Japan for its Modified Stilbenoid Program Drug CandidatesJuly 30, 2025 | globenewswire.comProtagenic Therapeutics, Inc. (PTIX) - Yahoo FinanceJune 24, 2025 | finance.yahoo.comOdd “310F trade” doubles investor’s money in just 3 days?Have you heard of 310F? This unusual trade setup has quietly delivered one of the most consistent profit streaks we’ve ever seen. For the past decade, a seasoned trader has used it to target fast-moving gains — sometimes doubling positions in just days. Out of more than 900 trades, over 97% have closed profitably. Now, for a limited time, he’s opening the door for new readers to see how this strategy works.September 6 at 2:00 AM | Eagle Publishing (Ad)Protagenic & Phytanix Merge in All-Stock Move, Sparking Retail FrenzyMay 29, 2025 | msn.comProtagenic Therapeutics swaps warrants for sharesMay 21, 2025 | uk.investing.comProtagenic Therapeutics Shares Double After Buyout Offer From Phytanix BioMay 20, 2025 | marketwatch.comProtagenic Therapeutics stock soars on merger to create Neuroactive Biopharmaceutical companyMay 20, 2025 | in.investing.comProtagenic Therapeutics Merges With Phytanix Bio In All-Stock Deal: Retail Turns Extremely BullishMay 20, 2025 | msn.comSee More Headlines PTIX Stock Analysis - Frequently Asked Questions How have PTIX shares performed this year? Atrinsic's stock was trading at $6.86 at the beginning of the year. Since then, PTIX stock has decreased by 54.1% and is now trading at $3.15. How were Atrinsic's earnings last quarter? Atrinsic Inc. (NASDAQ:PTIX) posted its earnings results on Tuesday, May, 13th. The company reported ($2.75) earnings per share (EPS) for the quarter. When did Atrinsic's stock split? Atrinsic shares reverse split on Monday, May 5th 2025.A 1-14 reverse split was announced. The number of shares owned by shareholders was adjusted after the closing bell on Sunday, May 4th 2025. An investor that had 100 shares of stock prior to the reverse split would have 7 shares after the split. How do I buy shares of Atrinsic? Shares of PTIX stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. What other stocks do shareholders of Atrinsic own? Based on aggregate information from My MarketBeat watchlists, some other companies that Atrinsic investors own include Fulcrum Therapeutics (FULC), VIVUS (VVUS), NVIDIA (NVDA), Cytokinetics (CYTK), Heatwurx (PCSA), Acasti Pharma (ACST) and Akero Therapeutics (AKRO). Company Calendar Last Earnings5/13/2025Today9/06/2025Next Earnings (Estimated)9/10/2025Fiscal Year End12/31/2025Get Stock AlertsIndustry, Sector and Symbol Stock ExchangeNASDAQ SectorMedical Industry MED - BIOMED/GENE Sub-IndustryPharmaceutical Products Current SymbolNASDAQ:PTIX CIK1022899 Webwww.protagenic.com Phone212-994-8200Fax603-761-6223Employees2Year FoundedN/AProfitability EPS (Trailing Twelve Months)($13.11) Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income-$5.53 million Net MarginsN/A Pretax MarginN/A Return on Equity-860.52% Return on Assets-354.19% Debt Debt-to-Equity RatioN/A Current Ratio0.86 Quick Ratio0.86 Sales & Book Value Annual SalesN/A Price / SalesN/A Cash FlowN/A Price / Cash FlowN/A Book Value$1.96 per share Price / Book1.61Miscellaneous Outstanding Shares590,000Free Float383,000Market Cap$1.86 million OptionableNot Optionable Beta0.36 Social Links Elon Musk's Next MoveExplore Elon Musk’s boldest ventures yet—from AI and autonomy to space colonization—and find out how investors can ride the next wave of innovation.Get This Free Report This page (NASDAQ:PTIX) was last updated on 9/6/2025 by MarketBeat.com Staff From Our PartnersStunning new initiative unfolding in the White House?what I just learned about what’s unfolding in the White House is truly stunning… And you need to see it for...Paradigm Press | SponsoredScientists Discover Untapped Energy Source in Heart of USACrash Coming Sept 30? 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