ProPhase Labs (PRPH) Short Interest Ratio & Short Volume $0.33 +0.01 (+2.45%) Closing price 04:00 PM EasternExtended Trading$0.33 +0.00 (+0.39%) As of 07:51 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 Short Interest Stock AnalysisChartCompetitorsDividendEarningsHeadlinesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock ProPhase Labs Short Interest DataProPhase Labs (PRPH) has a short interest of 1.28 million shares, representing 6.76% of the float (the number of shares available for trading by the public). This marks a 7.56% increase 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 2.65 million shares to cover all short positions.Current Short Interest1,280,000 sharesPrevious Short Interest1,190,000 sharesChange Vs. Previous Month+7.56%Dollar Volume Sold Short$368,512.00Short Interest Ratio0.1 Days to CoverLast Record DateApril 15, 2025Outstanding Shares41,879,000 sharesShort Percent of Float6.76%Today's Trading Volume346,955 sharesAverage Trading Volume2,649,719 sharesToday's Volume Vs. Average13% Short Selling ProPhase Labs? Sign up to receive the latest short interest report for ProPhase Labs and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartPRPH Short Interest Over TimePRPH Days to Cover Over TimePRPH Percentage of Float Shorted Over Time ProPhase Labs Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 4/15/20251,280,000 shares $368,512.00 +7.6%6.8%0.1 $0.29 3/31/20251,190,000 shares $481,117.00 +50.0%6.3%0.1 $0.40 3/15/2025793,400 shares $311,488.84 -52.2%4.2%0.1 $0.39 2/28/20251,660,000 shares $745,008.00 -62.4%8.8%0.2 $0.45 2/15/20254,420,000 shares $1.44 million +5,106.1%23.3%0.5 $0.33 1/31/202584,900 shares $22,354.17 -27.1%N/A0.1 $0.26 1/15/2025116,400 shares $69,851.64 +19.1%N/A0.4 $0.60 12/31/202497,700 shares $73,968.67 -10.5%N/A0.4 $0.76 12/15/2024109,200 shares $71,089.20 -24.6%N/A0.6 $0.65 11/30/2024144,900 shares $111,573.00 -41.0%N/A1 $0.77 Get the Latest News and Ratings for PRPH and Related StocksEnter your email address below to receive the latest news and analysts' ratings for ProPhase Labs and its competitors with MarketBeat's FREE daily newsletter. 11/15/2024245,700 shares $184,275.00 +59.4%N/A2.1 $0.75 10/31/2024154,100 shares $352,889.00 -25.2%N/A1.9 $2.29 10/15/2024206,100 shares $471,969.00 -10.8%N/A7.1 $2.29 9/30/2024231,000 shares $559,020.00 -9.9%N/A7.7 $2.42 9/15/2024256,300 shares $627,935.00 +3.0%N/A8.1 $2.45 8/31/2024248,900 shares $669,541.00 -9.9%N/A8.4 $2.69 8/15/2024276,300 shares $624,438.00 -13.3%N/A8.5 $2.26 7/31/2024318,500 shares $974,610.00 +0.7%N/A9.4 $3.06 7/15/2024316,400 shares $1.02 million -1.8%N/A8.6 $3.22 6/30/2024322,300 shares $1.35 million +0.5%N/A5.4 $4.18 6/15/2024320,800 shares $1.47 million +2.1%N/A5.3 $4.59 5/31/2024314,200 shares $1.62 million +20.8%N/A5.2 $5.15 5/15/2024260,100 shares $1.34 million -1.9%N/A4.3 $5.14 4/30/2024265,100 shares $1.22 million -3.5%1.9%5 $4.61 4/15/2024274,700 shares $1.69 million +6.8%2.0%5.5 $6.16 3/31/2024257,300 shares $1.66 million +3.7%1.8%9.6 $6.47 3/15/2024248,200 shares $1.25 million -16.9%1.8%9.5 $5.04 2/29/2024298,500 shares $1.33 million +0.7%2.1%11.2 $4.47 2/15/2024296,400 shares $1.47 million -0.2%2.1%12.1 $4.96 1/31/2024297,000 shares $1.44 million +4.7%2.1%11.2 $4.85 1/15/2024283,600 shares $1.39 million -7.3%2.0%10.9 $4.90 12/31/2023306,000 shares $1.38 million -5.1%2.2%12.2 $4.52 12/15/2023322,400 shares $1.45 million -20.2%2.3%13.1 $4.50 11/30/2023404,000 shares $2.05 million +45.5%2.9%15.2 $5.07 11/15/2023277,700 shares $1.21 million -5.3%2.0%8.8 $4.35 10/31/2023293,100 shares $1.29 million -1.9%2.3%7.9 $4.39 10/15/2023298,800 shares $1.31 million -3.9%2.3%7.7 $4.37 9/30/2023311,000 shares $1.36 million +0.2%2.4%7.5 $4.37 9/15/2023310,300 shares $1.41 million -13.8%2.4%7.1 $4.56 8/31/2023360,100 shares $1.54 million +0.5%2.8%7.1 $4.28Blackrock’s Sending THIS Crypto Higher on Purpose (Ad)While everyone's distracted by Bitcoin's moves, a stealth revolution is underway. One altcoin is quietly positioning itself to overthrow the entire banking system.Click here to access the full report now. 8/15/2023358,300 shares $2.04 million +0.3%2.8%6.3 $5.70 7/31/2023357,200 shares $2.60 million +8.9%2.7%5.9 $7.28 7/15/2023327,900 shares $2.33 million +1.1%2.5%4.5 $7.11 6/30/2023324,400 shares $2.36 million +1.8%2.5%4.3 $7.26 6/15/2023318,700 shares $2.38 million -8.1%2.4%4.1 $7.47 5/31/2023346,700 shares $3.29 million +2.5%2.6%4.7 $9.49 5/15/2023338,400 shares $2.72 million -4.1%2.6%5.6 $8.04 4/30/2023352,700 shares $2.65 million -7.9%2.7%6.8 $7.50 4/15/2023382,800 shares $3.12 million +23.5%2.9%8.5 $8.16 3/31/2023309,900 shares $2.36 million +17.9%2.4%6.6 $7.62 3/15/2023262,900 shares $2.12 million -10.0%2.2%5.2 $8.06 2/28/2023292,000 shares $2.13 million -3.3%2.4%5.9 $7.31 2/15/2023301,900 shares $2.42 million -6.0%2.5%5.6 $8.01 1/31/2023321,200 shares $2.63 million -8.7%2.6%4.9 $8.18 1/15/2023351,700 shares $3.29 million -5.8%2.8%5 $9.36 12/30/2022373,300 shares $3.59 million -9.6%2.9%4.8 $9.63 12/15/2022412,700 shares $4.20 million +10.1%3.2%5.1 $10.18 11/30/2022375,000 shares $3.89 million -11.9%3.0%4.3 $10.37 11/15/2022425,800 shares $5.03 million +16.2%3.4%4.5 $11.81 10/31/2022366,400 shares $4.42 million -21.1%2.9%3.5 $12.05 10/15/2022464,400 shares $4.83 million +13.9%3.7%4 $10.41 9/30/2022407,700 shares $4.60 million +28.9%3.2%2.7 $11.28 9/15/2022316,300 shares $3.38 million -4.2%2.5%1.8 $10.68 8/31/2022330,300 shares $4.00 million -9.8%2.6%1.8 $12.11 8/15/2022366,300 shares $4.47 million +31.6%3.0%1.9 $12.19 7/31/2022278,300 shares $2.88 million -2.7%3.3%1.7 $10.34 7/15/2022286,000 shares $4.00 million +22.8%3.4%1.9 $13.98 6/30/2022232,900 shares $2.95 million +61.4%2.8%2.2 $12.68 6/15/2022144,300 shares $1.53 million +65.3%1.7%2 $10.61 5/31/202287,300 shares $790,065.00 -1.0%0.7%1.7 $9.05 5/15/202288,200 shares $620,046.00 +2.3%0.7%2.7 $7.03 4/30/202286,200 shares $639,604.00 +21.4%0.7%3.2 $7.42 4/15/202271,000 shares $590,010.00 -31.2%0.6%2.8 $8.31 3/31/2022103,200 shares $722,400.00 +1.7%0.8%4.5 $7.00 3/15/2022101,500 shares $652,645.00 -1.4%0.8%5 $6.43 2/28/2022102,900 shares $650,328.00 +12.2%0.8%3.7 $6.32 2/15/202291,700 shares $633,647.00 -19.8%0.7%2.6 $6.91 1/31/2022114,300 shares $827,532.00 +13.5%0.9%3 $7.24 1/15/2022100,700 shares $735,110.00 -20.1%0.8%2.4 $7.30 12/31/2021126,000 shares $903,420.00 +17.4%1.0%2.5 $7.17 12/15/2021107,300 shares $743,589.00 -29.8%0.8%2.1 $6.93 11/30/2021152,800 shares $959,584.00 -10.2%1.2%2.9 $6.28 11/15/2021170,100 shares $1.02 million -10.1%1.3%3.6 $6.00 10/29/2021189,100 shares $1.11 million -9.6%1.5%2.8 $5.89 10/15/2021209,100 shares $1.19 million -13.3%1.7%2.3 $5.70 9/30/2021241,300 shares $1.25 million -7.0%1.9%2.3 $5.20 9/15/2021259,500 shares $1.28 million -14.1%2.1%1.5 $4.95 8/31/2021302,100 shares $1.62 million -5.6%2.4%0.9 $5.36 8/13/2021320,000 shares $2.07 million -17.6%2.6%0.9 $6.46 7/30/2021388,500 shares $2.78 million -7.0%3.1%1.1 $7.16Blackrock’s Sending THIS Crypto Higher on Purpose (Ad)While everyone's distracted by Bitcoin's moves, a stealth revolution is underway. One altcoin is quietly positioning itself to overthrow the entire banking system.Click here to access the full report now. 7/15/2021417,900 shares $2.57 million -9.0%3.4%1.3 $6.15 6/30/2021459,100 shares $2.85 million +42.2%3.7%1.3 $6.20 6/15/2021322,800 shares $1.90 million +69.6%2.6%0.8 $5.90 5/28/2021190,300 shares $913,440.00 -12.3%1.5%0.5 $4.80 5/14/2021217,000 shares $1.21 million +17.5%1.7%0.8 $5.56 4/30/2021184,700 shares $971,522.00 +39.8%1.5%0.7 $5.26 4/15/2021132,100 shares $696,167.00 -24.2%1.1%0.4 $5.27 3/31/2021174,300 shares $1.09 million +42.8%1.4%0.5 $6.27 3/15/2021122,100 shares $880,341.00 +62.8%1.0%0.6 $7.21 2/26/202175,000 shares $579,000.00 -24.8%0.6%0.4 $7.72 2/12/202199,700 shares $1.04 million -11.0%0.8%0.6 $10.41 1/29/2021112,000 shares $1.09 million +31.0%1.0%0.7 $9.76 1/15/202185,500 shares $1.37 million No Change0.7%0.5 $15.99 PRPH Short Interest - Frequently Asked Questions What is ProPhase Labs' current short interest? Short interest is the volume of ProPhase Labs shares that have been sold short but have not yet been closed out or covered. As of April 15th, traders have sold 1,280,000 shares of PRPH short. 6.76% of ProPhase Labs' shares are currently sold short. Learn More on ProPhase Labs' current short interest. Which institutional investors are shorting ProPhase Labs? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of ProPhase Labs: Concourse Financial Group Securities Inc.. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for ProPhase Labs? 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. 6.76% of ProPhase Labs' floating shares are currently sold short. Is ProPhase Labs' short interest increasing or decreasing? ProPhase Labs saw a increase in short interest in April. As of April 15th, there was short interest totaling 1,280,000 shares, an increase of 7.6% from the previous total of 1,190,000 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. How does ProPhase Labs' short interest compare to its competitors? 6.76% of ProPhase Labs' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to ProPhase Labs: Repare Therapeutics Inc. (2.28%), Renovaro Inc. (6.62%), CytomX Therapeutics, Inc. (13.15%), Skye Bioscience, Inc. (14.88%), PDS Biotechnology Co. (8.86%), Applied Therapeutics, Inc. (15.14%), Biodexa Pharmaceuticals Plc (0.80%), Gain Therapeutics, Inc. (1.02%), Kronos Bio, Inc. (1.71%), Precision BioSciences, Inc. (21.96%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Invesco QQQ ($21.71 billion), iShares 20+ Year Treasury Bond ETF ($9.48 billion), Strategy Incorporated ($8.92 billion), Charter Communications, Inc. ($3.86 billion), Apollo Global Management, Inc. ($3.86 billion), Capital One Financial Co. ($3.72 billion), Super Micro Computer, Inc. ($3.47 billion), AppLovin Co. ($2.64 billion), VanEck Semiconductor ETF ($2.46 billion), and The Kroger Co. ($2.33 billion). View all of the most shorted stocks. What does it mean to sell short ProPhase Labs stock? Short selling PRPH is an investing strategy that aims to generate trading profit from ProPhase Labs as its price is falling. PRPH shares are trading up $0.01 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 ProPhase Labs? A short squeeze for ProPhase Labs occurs when it has a large amount of short interest and its stock appreciates in price. This forces short sellers to cover their short interest positions by buying actual shares of PRPH, which in turn drives the price of the stock up even further. How often is ProPhase Labs' 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 PRPH, twice per month. The most recent reporting period available is April, 15 2025. More Short Interest Resources from MarketBeat Related Companies Repare Therapeutics Short Interest Data Renovaro Short Interest Data CytomX Therapeutics Short Interest Data Skye Bioscience Short Interest Data PDS Biotechnology Short Interest Data Applied Therapeutics Short Interest Data Biodexa Pharmaceuticals Short Interest Data Gain Therapeutics Short Interest Data Kronos Bio Short Interest Data Precision BioSciences Short Interest Data Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:PRPH) was last updated on 5/2/2025 by MarketBeat.com Staff From Our PartnersElon’s Terrifying Warning Forces Trump To Take ActionElon Musk has avoided two major financial crises before. He pulled Tesla and SpaceX back from the brink of col...American Hartford Gold | SponsoredSecret financial plot unfolding in Washington DC… [DEVELOPING]What stocks are next up to soar in 2025? 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