Phio Pharmaceuticals (PHIO) Short Interest Ratio & Short Volume $2.27 -0.09 (-3.81%) Closing price 06/20/2025 04:00 PM EasternExtended Trading$2.30 +0.03 (+1.32%) As of 08:57 AM 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 Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Phio Pharmaceuticals Short Interest DataPhio Pharmaceuticals (PHIO) has a short interest of 226,900 shares, representing 4.79% of the float (the number of shares available for trading by the public). This marks a -45.06% decrease in short interest from the previous month. The short interest ratio (days to cover) is 0.1, indicating that it would take 0.1 days of the average trading volume of 2.44 million shares to cover all short positions.Current Short Interest226,900 sharesPrevious Short Interest413,000 sharesChange Vs. Previous Month-45.06%Dollar Volume Sold Short$446.99 thousandShort Interest Ratio0.1 Days to CoverLast Record DateMay 31, 2025Outstanding Shares4,800,000 sharesFloat Size4,740,000 sharesShort Percent of Float4.79%Today's Trading Volume171,606 sharesAverage Trading Volume2,437,956 sharesToday's Volume Vs. Average7% Short Selling Phio Pharmaceuticals? Sign up to receive the latest short interest report for Phio Pharmaceuticals and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartPHIO Short Interest Over TimePHIO Days to Cover Over TimePHIO Percentage of Float Shorted Over Time Phio Pharmaceuticals Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 5/31/2025226,900 shares $446.99 thousand -45.1%4.8%0.1 $1.97 5/15/2025413,000 shares $735.14 thousand +50.4%8.7%0.1 $1.78 4/30/2025274,700 shares $527.42 thousand -80.9%5.8%0.1 $1.92 4/15/20251,440,000 shares $3.50 million +1,729.7%34.0%0.5 $2.43 3/31/202578,700 shares $102.31 thousand +14.2%1.9%0 $1.30 3/15/202568,900 shares $88.88 thousand +3.3%1.6%0 $1.29 2/28/202566,700 shares $94.71 thousand +46.6%1.6%0 $1.42 2/15/202545,500 shares $82.36 thousand -54.3%1.1%0 $1.81 1/31/202599,600 shares $205.18 thousand -82.4%2.4%0 $2.06 1/15/2025566,400 shares $1.51 million +749.2%17.3%0.1 $2.66 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. 12/31/202466,700 shares $120.06 thousand +67.6%4.0%0.2 $1.80 12/15/202439,800 shares $111.84 thousand -17.3%2.7%0.1 $2.81 11/30/202448,100 shares $130.83 thousand +0.2%4.7%0.7 $2.72 11/15/202448,000 shares $106.56 thousand -6.8%4.7%0.7 $2.22 10/31/202451,500 shares $153.47 thousand +141.8%6.2%0.8 $2.98 10/15/202421,300 shares $58.79 thousand -55.9%2.6%0.3 $2.76 9/30/202448,300 shares $170.02 thousand +182.5%5.8%0.9 $3.52 9/15/202417,100 shares $56.26 thousand +83.9%2.1%0.4 $3.29 8/31/20249,300 shares $25.30 thousand -47.2%1.1%0.3 $2.72 8/15/202417,600 shares $45.41 thousand +7.3%3.5%0.5 $2.58 7/31/202416,400 shares $52.48 thousand +178.0%3.3%0.5 $3.20 7/15/20245,900 shares $27.55 thousand -62.7%1.2%0.2 $4.67 6/30/202415,800 shares $98.39 thousand -89.6%3.1%0.7 $6.23 6/15/2024152,000 shares $108.00 thousand -14.2%3.3%0.7 $0.71 5/31/2024177,100 shares $129.28 thousand +1.3%3.9%0.7 $0.73 5/15/2024174,800 shares $139.84 thousand -5.4%3.8%0.5 $0.80 4/30/2024184,700 shares $128.74 thousand +446.5%4.1%0.4 $0.70 4/15/202433,800 shares $22.00 thousand +57.9%0.8%0.1 $0.65 3/31/202421,400 shares $14.55 thousand -87.9%0.5%0.1 $0.68 3/15/2024176,600 shares $167.59 thousand +283.9%7.4%0.6 $0.95 2/29/202446,000 shares $49.68 thousand -30.0%1.9%0.1 $1.08 2/15/202465,700 shares $42.71 thousand +390.3%2.7%0.1 $0.65 1/31/202413,400 shares $7.96 thousand -74.1%0.6%0 $0.59 1/15/202451,800 shares $35.70 thousand -66.4%2.2%0.1 $0.69 12/31/2023154,200 shares $117.19 thousand +23.8%6.4%0.1 $0.76 12/15/2023124,600 shares $94.70 thousand +783.7%5.2%0.1 $0.76 11/30/202314,100 shares $15.42 thousand -35.0%0.6%0 $1.09 11/15/202321,700 shares $22.57 thousand -35.2%0.9%0 $1.04 10/31/202333,500 shares $41.54 thousand -91.2%1.5%0 $1.24 10/15/2023379,900 shares $566.05 thousand +1,920.7%17.4%0.4 $1.49Everyone’s watching Nvidia right now. 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(Ad)So, unless you’ve been living under a rock, you probably saw the news… Nvidia just signed a $7 BILLION deal with Saudi Arabia to power its new AI empire 🤯 We’re talking about hundreds of thousands of chips, including their latest Grace Blackwell supercomputer.🎯 Click here to watch the video and get the free ticker XGPT just flagged. 9/30/202318,800 shares $28.39 thousand +8.7%0.9%0.8 $1.51 9/15/202317,300 shares $28.55 thousand +17.7%0.8%0.6 $1.65 8/31/202314,700 shares $31.31 thousand +19.5%0.7%0.5 $2.13 8/15/202312,300 shares $27.68 thousand +2.5%0.6%0.2 $2.25 7/31/202312,000 shares $32.04 thousand -60.0%0.8%0 $2.67 7/15/202330,000 shares $81.90 thousand +18.1%2.0%0.1 $2.73 6/30/202325,400 shares $72.90 thousand -71.9%1.7%0 $2.87 6/15/202390,300 shares $295.28 thousand -12.6%6.1%0.2 $3.27 5/31/2023103,300 shares $361.55 thousand +588.7%7.0%0.2 $3.50 5/15/202315,000 shares $50.55 thousand -49.8%1.0%0 $3.37 4/30/202329,900 shares $101.06 thousand +116.7%2.7%0.2 $3.38 4/15/202313,800 shares $70.82 thousand -25.4%1.2%0.1 $5.13 3/31/202318,500 shares $103.97 thousand -39.5%1.7%0.8 $5.62 3/15/202330,600 shares $174.13 thousand -30.6%2.8%0.8 $5.69 2/28/202344,100 shares $241.67 thousand +3.5%4.1%1.2 $5.48 2/15/202342,600 shares $221.52 thousand +27.5%3.9%1.2 $5.20 1/31/202333,400 shares $207.81 thousand -91.0%3.0%1.1 $6.22 1/15/2023370,600 shares $199.68 thousand +305.9%2.8%1.4 $0.54 12/30/202291,300 shares $33.96 thousand +157.2%0.7%0.4 $0.37 12/15/202235,500 shares $12.78 thousand +7.3%0.3%0.3 $0.36 11/30/202233,100 shares $13.90 thousand -14.7%0.3%0.5 $0.42 11/15/202238,800 shares $17.48 thousand -38.1%0.3%0.5 $0.45 10/31/202262,700 shares $36.05 thousand -35.6%0.5%0.8 $0.58 10/15/202297,300 shares $54.24 thousand +19.2%0.7%1.1 $0.56 9/30/202281,600 shares $46.62 thousand -6.5%0.6%0.9 $0.57 9/15/202287,300 shares $64.79 thousand +46.7%0.7%0.8 $0.74 8/31/202259,500 shares $41.67 thousand -31.6%0.4%0.5 $0.70 8/15/202287,000 shares $66.47 thousand +0.8%0.7%0.5 $0.76 7/31/202286,300 shares $61.71 thousand +13.1%0.6%0.3 $0.72 7/15/202276,300 shares $53.96 thousand -39.4%0.6%0.2 $0.71 6/30/2022125,900 shares $88.39 thousand -48.9%1.0%0 $0.70 6/15/2022246,400 shares $168.12 thousand -33.2%1.9%0.1 $0.68 5/31/2022368,700 shares $267.27 thousand +102.8%2.8%0.1 $0.72 5/15/2022181,800 shares $128.62 thousand -23.7%1.4%0.1 $0.71 4/30/2022238,100 shares $200.00 thousand -78.7%1.8%0.1 $0.84 4/15/20221,120,000 shares $1.33 million +462.3%8.6%0.3 $1.19 3/31/2022199,200 shares $176.69 thousand +159.7%1.5%0.1 $0.89 3/15/202276,700 shares $61.36 thousand +50.7%0.6%0.1 $0.80 2/28/202250,900 shares $41.23 thousand -27.3%0.4%0.1 $0.81 2/15/202270,000 shares $60.28 thousand -56.8%0.5%0.1 $0.86 1/31/2022162,000 shares $141.75 thousand -80.7%1.2%0.3 $0.88 1/15/2022840,300 shares $742.83 thousand +155.9%6.3%1.4 $0.88 12/31/2021328,400 shares $328.40 thousand -12.5%2.5%1.8 $1.00 12/15/2021375,100 shares $420.11 thousand -18.0%2.8%2.1 $1.12 11/30/2021457,600 shares $617.76 thousand +6.7%3.4%1.2 $1.35 11/15/2021429,000 shares $652.08 thousand -2.0%3.2%1.1 $1.52 10/29/2021437,600 shares $735.17 thousand -3.2%3.3%1.1 $1.68 10/15/2021452,000 shares $754.84 thousand -9.3%3.4%1 $1.67 9/30/2021498,500 shares $1.01 million -46.7%3.7%1 $2.03 9/15/2021934,600 shares $1.84 million -11.8%7.0%1.9 $1.97July 2025 Rule Change to Impact Retirement Investors (Ad)There's a massive change from a new rule going into effect this July. And it's one the Big Banks are already using to their advantage… It allows them to treat this new asset like actual cash.Yes, Send Me My FREE Retirement Guide 8/31/20211,060,000 shares $2.20 million -7.0%8.0%3.2 $2.08 8/13/20211,140,000 shares $1.96 million -12.3%8.6%2.8 $1.72 7/30/20211,300,000 shares $2.34 million +14.0%9.8%2.4 $1.80 7/15/20211,140,000 shares $2.17 million +8.6%8.6%1.3 $1.90 6/30/20211,050,000 shares $2.37 million -7.9%7.9%1.3 $2.26 6/15/20211,140,000 shares $2.58 million -26.5%8.6%1.3 $2.26 5/28/20211,550,000 shares $3.44 million +16.5%11.6%1.7 $2.22 5/14/20211,330,000 shares $2.49 million +100.9%10.0%1.3 $1.87 4/30/2021662,200 shares $1.55 million +5.5%5.0%0.4 $2.34 4/15/2021627,900 shares $1.52 million +17.4%4.7%0.5 $2.42 3/31/2021535,000 shares $1.45 million +22.7%4.0%0.4 $2.71 3/15/2021436,000 shares $1.37 million +41.6%3.3%0.3 $3.15 2/26/2021308,000 shares $951.72 thousand -64.4%2.4%0.2 $3.09 2/12/2021864,200 shares $3.12 million -33.0%8.5%0.7 $3.61 1/29/20211,290,000 shares $3.99 million +152.3%12.7%1.7 $3.09 1/15/2021511,400 shares $1.53 million -6.8%8.9%0.8 $2.99 12/31/2020548,900 shares $1.49 million +6.2%9.5%0.9 $2.71 12/15/2020517,000 shares $1.35 million +497.0%9.0%1 $2.61 11/30/202086,600 shares $199.18 thousand -50.3%1.5%0.2 $2.30 11/15/2020174,100 shares $386.50 thousand +100.1%3.0%0.4 $2.22 10/30/202087,000 shares $185.31 thousand +564.1%1.5%0.2 $2.13 10/15/202013,100 shares $28.17 thousand +10.1%0.2%0 $2.15 9/30/202011,900 shares $25.47 thousand -24.2%0.2%0 $2.14 9/15/202015,700 shares $32.81 thousand -80.4%0.3%0 $2.09 8/31/202080,000 shares $184.80 thousand -36.5%1.4%0.2 $2.31 8/14/2020126,000 shares $304.92 thousand +123.0%2.2%0.1 $2.42 7/31/202056,500 shares $140.12 thousand -43.2%1.0%0 $2.48 7/15/202099,500 shares $227.86 thousand -8.9%1.7%0.1 $2.29 6/30/2020109,200 shares $239.15 thousand -51.2%2.4%0.1 $2.19 PHIO Short Interest - Frequently Asked Questions What is Phio Pharmaceuticals' current short interest? Short interest is the volume of Phio Pharmaceuticals shares that have been sold short but have not yet been covered or closed out. As of May 31st, traders have sold 226,900 shares of PHIO short. 4.79% of Phio Pharmaceuticals' shares are currently sold short. Learn More on Phio Pharmaceuticals' current short interest. What is a good short interest percentage for Phio Pharmaceuticals? Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 4.79% of Phio Pharmaceuticals' floating shares are currently sold short. Is Phio Pharmaceuticals' short interest increasing or decreasing? Phio Pharmaceuticals saw a drop in short interest in the month of May. As of May 31st, there was short interest totaling 226,900 shares, a drop of 45.1% from the previous total of 413,000 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment. What is Phio Pharmaceuticals' float size? Phio Pharmaceuticals currently has issued a total of 4,800,000 shares. Some of Phio Pharmaceuticals' outstanding shares are available for trading, while others are subject to various restrictions. The public float, also referred to as floating shares or "the float", are shares that publicly owned, unrestricted and available to trade on the open market. Phio Pharmaceuticals currently has a public float of 4,740,000 shares. How does Phio Pharmaceuticals' short interest compare to its competitors? 4.79% of Phio Pharmaceuticals' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Phio Pharmaceuticals: Mersana Therapeutics, Inc. (10.20%), Cue Biopharma, Inc. (1.39%), Mural Oncology plc (2.66%), Celularity Inc. (10.72%), Iterum Therapeutics plc (2.76%), Clene Inc. (4.74%), Karyopharm Therapeutics Inc. (26.01%), Alterity Therapeutics Limited (0.88%), ImmunoPrecise Antibodies Ltd. (0.62%), Acrivon Therapeutics, Inc. (4.74%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($64.96 billion), Invesco QQQ ($27.88 billion), iShares Russell 2000 ETF ($19.94 billion), iShares 20+ Year Treasury Bond ETF ($9.69 billion), MicroStrategy Incorporated ($8.58 billion), SPDR S&P Biotech ETF ($5.72 billion), Invesco S&P 500 Equal Weight ETF ($5.45 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($4.70 billion), Charter Communications, Inc. ($4.54 billion), and Industrial Select Sector SPDR Fund ($4.49 billion). View all of the most shorted stocks. What does it mean to sell short Phio Pharmaceuticals stock? Short selling PHIO is an investing strategy that aims to generate trading profit from Phio Pharmaceuticals as its price is falling. PHIO shares are trading down $0.09 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit. How does a short squeeze work against Phio Pharmaceuticals? A short squeeze for Phio Pharmaceuticals occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of PHIO, which in turn drives the price of the stock up even further. How often is Phio Pharmaceuticals' short interest reported? Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including PHIO, twice per month. The most recent reporting period available is May, 31 2025. More Short Interest Resources from MarketBeat Related Companies Mersana Therapeutics Short Squeeze Cue Biopharma Short Squeeze Mural Oncology Short Squeeze Celularity Short Squeeze Iterum Therapeutics Short Squeeze Clene Short Squeeze Karyopharm Therapeutics Short Squeeze Alterity Therapeutics Short Squeeze ImmunoPrecise Antibodies Short Squeeze Acrivon Therapeutics Short Squeeze Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:PHIO) was last updated on 6/23/2025 by MarketBeat.com Staff From Our PartnersYour Bank Account Is No Longer SafeWhat If Washington Declared That: YOUR Money ISN'T Actually Yours? 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