Phio Pharmaceuticals (PHIO) Stock Chart & Stock Price History $2.18 -0.14 (-6.03%) Closing price 09/12/2025 04:00 PM EasternExtended Trading$2.22 +0.03 (+1.61%) As of 09/12/2025 07:27 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 Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Phio Pharmaceuticals Stock Price Performance The Phio Pharmaceuticals (PHIO) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 33.94%, with a year-to-date return of 21.11%. In the past month, the stock has decreased 0.46%, reflecting recent market activity. As of the latest close, Phio Pharmaceuticals traded at $2.18 with a market cap of $12.49 million and volume of 115,295 shares. Five years ago, the stock traded at a split-adjusted price of $18.36, representing a 88.13% decrease over that period. At the time, it had a market cap of $11.79 million and a volume of 9,796 shares. Receive PHIO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Phio Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. 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Read our full terms of service and privacy policy. 5 Day Performance-10.66%1 Month Performance-0.46%3 Month Performance-3.96%Year-To-Date Performance+21.11%1 Year Performance-33.94%5 Year Performance-88.13% PHIO Stock Chart for Sunday, September, 14, 2025 PHIO Chart by TradingView Phio Pharmaceuticals Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization09/12/2025$2.32$2.18-6.03%$2.32$2.15115,295 shs$12.49 million09/11/2025$2.47$2.32-6.07%$2.47$2.30113,527 shs$13.29 million09/10/2025$2.44$2.47+1.23%$2.57$2.33232,039 shs$14.15 million09/09/2025$2.12$2.44+15.09%$2.46$2.11353,822 shs$13.98 million09/08/2025$2.04$2.12+3.92%$2.15$2.01126,786 shs$12.15 million09/05/2025$2.06$2.04-0.97%$2.04$2.0030,431 shs$11.69 million09/04/2025$2.08$2.06-0.96%$2.08$1.9983,001 shs$11.80 million09/03/2025$2.12$2.08-1.89%$2.11$1.99145,592 shs$11.91 million09/02/2025$1.97$2.12+7.61%$2.13$1.96425,353 shs$12.15 million09/01/2025$1.97$1.97$2.01$1.9634,581 shs$11.29 million Get the Latest News and Ratings for PHIO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Phio Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 08/29/2025$1.98$1.97-0.51%$2.01$1.9634,581 shs$11.29 million08/28/2025$2.03$1.98-2.46%$2.06$1.9875,498 shs$11.34 million08/27/2025$2.04$2.03-0.49%$2.07$2.0093,587 shs$11.63 million08/26/2025$1.99$2.04+2.51%$2.05$2.0056,261 shs$11.69 million08/25/2025$2.09$1.99-4.78%$2.06$1.9999,079 shs$11.40 million08/22/2025$2.07$2.09+0.97%$2.12$2.00120,003 shs$11.97 million08/21/2025$2.03$2.07+1.97%$2.09$1.96132,757 shs$11.86 million08/20/2025$2.01$2.03+1.00%$2.07$1.91136,791 shs$11.63 million08/19/2025$2.15$2.01-6.51%$2.13$2.00283,362 shs$9.64 million08/18/2025$2.18$2.15-1.38%$2.20$2.0967,551 shs$10.32 million08/15/2025$2.19$2.18-0.46%$2.26$2.05169,047 shs$10.46 million08/14/2025$2.19$2.19$2.29$2.12137,596 shs$10.51 million08/13/2025$2.14$2.19+2.34%$2.24$2.05168,469 shs$10.51 million Related Companies LTRN Stock Chart PEPG Stock Chart NBRV Stock Chart RNXT Stock Chart ATHE Stock Chart AADI Stock Chart ANVS Stock Chart GRCE Stock Chart JSPR Stock Chart IPSC Stock Chart Receive PHIO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Phio Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 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