Purple Biotech (PPBT) Short Interest Ratio & Short Volume $2.46 -0.10 (-3.91%) As of 03:59 PM Eastern Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Purple Biotech Short Interest DataPurple Biotech (PPBT) has a short interest of 165,700 shares, representing 6.00% of the float (the number of shares available for trading by the public). This marks a -9.60% decrease in short interest from the previous month. The short interest ratio (days to cover) is 1.6, indicating that it would take 1.6 days of the average trading volume of 270,588 shares to cover all short positions.Current Short Interest165,700 sharesPrevious Short Interest183,300 sharesChange Vs. Previous Month-9.60%Dollar Volume Sold Short$447.39 thousandShort Interest Ratio1.6 Days to CoverLast Record DateMay 31, 2025Outstanding Shares1,331,000 sharesFloat Size2,760,000 sharesShort Percent of Float6.00%Today's Trading Volume41,637 sharesAverage Trading Volume270,588 sharesToday's Volume Vs. Average15% Short Selling Purple Biotech? Sign up to receive the latest short interest report for Purple Biotech and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartPPBT Short Interest Over TimePPBT Days to Cover Over TimePPBT Percentage of Float Shorted Over Time Purple Biotech Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 5/31/2025165,700 shares $447.39 thousand -9.6%6.0%1.6 $2.70 5/15/2025183,300 shares $420.67 thousand +179.4%6.6%1.8 $2.30 4/30/202565,600 shares $157.44 thousand +33.3%2.5%0.7 $2.40 4/15/202549,200 shares $123 thousand -13.5%1.9%2.7 $2.50 3/31/202556,900 shares $153.06 thousand +11.4%2.2%2.4 $2.69 3/15/202551,100 shares $138.99 thousand +5.6%1.9%1 $2.72 2/28/202548,400 shares $144.23 thousand -10.4%1.8%0.5 $2.98 2/15/202554,000 shares $167.40 thousand -7.2%2.1%0.1 $3.10 1/31/202558,200 shares $187.99 thousand -42.0%2.2%0.1 $3.23 1/15/2025100,400 shares $365.46 thousand -29.1%3.9%0.1 $3.64 Get the Latest News and Ratings for PPBT and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Purple Biotech and its competitors with MarketBeat's FREE daily newsletter. 12/31/2024141,600 shares $664.10 thousand +3.4%5.5%0.2 $4.69 12/15/2024136,900 shares $524.33 thousand +94.7%5.4%0.2 $3.83 11/30/202470,300 shares $235.86 thousand +103.2%2.8%0.1 $3.36 11/15/202434,600 shares $86.67 thousand +77.4%1.9%0.8 $2.51 10/31/202419,500 shares $62.60 thousand +8.3%1.1%0.5 $3.21 10/15/202418,000 shares $74.52 thousand +37.4%1.0%0.8 $4.14 9/30/202413,100 shares $72.97 thousand -33.5%0.8%0.6 $5.57 9/15/202419,700 shares $0.00 -95.3%1.2%1 $0.00 8/31/2024418,800 shares $204.79 thousand +28.5%N/A1.5 $0.49 8/15/2024326,000 shares $120.59 thousand -14.1%N/A1.1 $0.37 7/31/2024379,700 shares $146.46 thousand -6.1%N/A1.3 $0.39 7/15/2024404,500 shares $153.79 thousand -48.9%N/A1.2 $0.38 6/30/2024790,900 shares $321.90 thousand +188.7%N/A2.3 $0.41 6/15/2024274,000 shares $164.67 thousand -11.6%N/A1.5 $0.60 5/31/2024309,900 shares $250.24 thousand +20.3%N/A1.7 $0.81 5/15/2024257,600 shares $128.80 thousand -13.3%N/A1.5 $0.50 4/30/2024297,200 shares $153.86 thousand +27.3%N/A2 $0.52 4/15/2024233,500 shares $132.32 thousand +5.1%N/A2 $0.57 3/31/2024222,200 shares $148.87 thousand -0.4%N/A2.3 $0.67 3/15/2024223,000 shares $161.64 thousand -24.6%N/A2.2 $0.72 2/29/2024295,900 shares $249.86 thousand -6.2%N/A2.9 $0.84 2/15/2024315,400 shares $239.67 thousand -24.6%N/A3.5 $0.76 1/31/2024418,100 shares $275.95 thousand -7.7%N/A5.2 $0.66 1/15/2024452,800 shares $312.43 thousand -4.7%N/A4.6 $0.69 12/31/2023475,100 shares $370.58 thousand -13.5%N/A4.6 $0.78 12/15/2023548,900 shares $521.46 thousand +7.8%N/A5.2 $0.95 11/30/2023509,100 shares $529.46 thousand -8.6%N/A5.6 $1.04 11/15/2023556,700 shares $578.97 thousand -20.5%N/A6.4 $1.04 10/31/2023700,100 shares $945.14 thousand -6.5%N/A8.1 $1.35 10/15/2023748,400 shares $950.47 thousand +15.9%N/A9.5 $1.27Elon’s NEXT Big IPO? 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But you may only have this chance if you act before December 31st, 2025.One that experts predict could be worth over $3.2 TRILLION globally by 2030. 9/30/2023645,900 shares $768.62 thousand -0.1%N/A7.1 $1.19 9/15/2023646,600 shares $724.19 thousand -4.7%N/A7.5 $1.12 8/31/2023678,400 shares $820.86 thousand -0.5%N/A7.7 $1.21 8/15/2023681,600 shares $763.39 thousand -2.5%N/A8 $1.12 7/31/2023698,700 shares $761.58 thousand -11.3%N/A8.5 $1.09 7/15/2023787,900 shares $961.24 thousand +17.2%N/A11.2 $1.22 6/30/2023672,100 shares $937.58 thousand -0.5%N/A11.5 $1.40 6/15/2023675,400 shares $1.08 million -0.3%N/A21.5 $1.60 5/31/2023677,700 shares $1.19 million -0.3%N/A23.6 $1.76 5/15/2023679,900 shares $1.23 million -2.7%N/A22 $1.81 4/30/2023698,800 shares $1.41 million +1.5%N/A19 $2.02 4/15/2023688,600 shares $1.36 million -0.2%N/A16.8 $1.97 3/31/2023690,100 shares $1.24 million -5.7%N/A16.5 $1.79 3/15/2023731,600 shares $1.51 million -0.4%N/A16 $2.07 2/28/2023734,500 shares $1.47 million -3.0%N/A15.7 $2.00 2/15/2023757,400 shares $1.70 million +3.8%N/A16 $2.25 1/31/2023729,800 shares $1.16 million -3.8%N/A16.1 $1.59 1/15/2023758,400 shares $1.21 million -3.9%N/A18.8 $1.59 12/30/2022789,400 shares $1.09 million -5.2%N/A20 $1.38 12/15/2022832,400 shares $1.27 million -3.5%N/A23.6 $1.53 11/30/2022862,200 shares $1.69 million -0.6%N/A21.1 $1.96 11/15/2022867,500 shares $1.87 million -0.5%N/A11 $2.16 10/31/2022871,500 shares $1.86 million -1.0%N/A11.3 $2.13 10/15/2022880,000 shares $1.74 million -0.7%N/A11 $1.98 9/30/2022886,000 shares $1.80 million -4.1%N/A10.7 $2.03 9/15/2022924,100 shares $1.98 million +10.2%N/A10.6 $2.14 8/31/2022838,400 shares $1.97 million -0.6%N/A9.8 $2.35 8/15/2022843,200 shares $2.16 million -3.0%N/A18.6 $2.56 7/31/2022869,600 shares $2.19 million +1.1%N/A16.8 $2.52 7/15/2022859,800 shares $1.96 million -4.3%N/A16.3 $2.28 6/30/2022898,600 shares $2.15 million -3.2%N/A13.4 $2.39 6/15/2022928,400 shares $2.38 million -4.5%N/A12.8 $2.56 5/31/2022971,700 shares $2.80 million -2.8%N/A11.9 $2.88 5/15/20221,000,000 shares $2.92 million -2.0%5.7%11.4 $2.92 4/30/20221,020,000 shares $3.01 million +2.0%5.9%10.7 $2.95 4/15/20221,000,000 shares $3.12 million +2.2%5.7%9.2 $3.12 3/31/2022978,200 shares $3.84 million +5.3%5.6%8.7 $3.93 3/15/2022928,800 shares $2.50 million -4.5%5.3%8.5 $2.69 2/28/2022972,900 shares $2.84 million -2.7%5.6%9.2 $2.92 2/15/20221,000,000 shares $3.06 million +0.9%5.7%9.4 $3.06 1/31/2022991,500 shares $2.54 million -9.0%5.7%9 $2.56 1/15/20221,090,000 shares $4.43 million +0.9%6.3%10 $4.06 12/31/20211,080,000 shares $4.20 million -1.8%6.2%11.1 $3.89 12/15/20211,100,000 shares $4.55 million +5.8%6.3%11.1 $4.14 11/30/20211,040,000 shares $4.13 million +4.0%6.0%9.9 $3.97 11/15/20211,000,000 shares $4.48 million -3.9%5.7%8.4 $4.48 10/29/20211,040,000 shares $4.46 million -4.6%N/A8.2 $4.29 10/15/20211,090,000 shares $4.98 million -3.5%N/A7 $4.57 9/30/20211,130,000 shares $5.18 million -8.1%N/A6.2 $4.58 9/15/20211,230,000 shares $6.14 million -2.4%N/A6.1 $4.99Elon’s NEXT Big IPO? 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But you may only have this chance if you act before December 31st, 2025.One that experts predict could be worth over $3.2 TRILLION globally by 2030. 8/31/20211,260,000 shares $6.25 million +10.5%N/A5.2 $4.96 8/13/20211,140,000 shares $5.38 million -2.6%N/A2.6 $4.72 7/30/20211,170,000 shares $6.46 million +17.4%N/A2.6 $5.52 7/15/2021996,400 shares $4.80 million +2.5%N/A2.3 $4.82 6/30/2021972,400 shares $4.75 million +4.6%N/A2.1 $4.88 6/15/2021929,500 shares $4.86 million +70.7%N/A1.9 $5.23 5/28/2021544,600 shares $2.97 million +54.2%N/A1.2 $5.46 5/14/2021353,200 shares $1.36 million +15.6%N/A1 $3.86 4/30/2021305,500 shares $1.31 million +26.7%N/A0.5 $4.29 4/15/2021241,200 shares $979.27 thousand -0.7%N/A0.3 $4.06 3/31/2021243,000 shares $991.44 thousand +25.7%N/A0.3 $4.08 3/15/2021193,400 shares $937.99 thousand -38.4%N/A0.2 $4.85 2/26/2021314,100 shares $1.52 million -11.1%N/A0.4 $4.85 2/12/2021353,100 shares $2.06 million +90.2%N/A0.4 $5.84 1/29/2021185,700 shares $768.80 thousand +82.6%N/A0.3 $4.14 1/15/2021101,700 shares $441.38 thousand No ChangeN/A0.2 $4.34 11/30/202013,300 shares $56.13 thousand -69.8%N/A0 $4.22 11/15/202044,000 shares $182.60 thousand -7.2%N/A0.1 $4.15 10/30/202047,400 shares $203.35 thousand -74.2%N/A0 $4.29 10/15/2020183,700 shares $791.75 thousand -33.7%N/A0 $4.31 9/30/2020277,100 shares $1.22 million -31.1%N/A0 $4.41 9/15/2020402,000 shares $1.74 million -37.5%N/A0 $4.34 8/31/2020643,400 shares $2.79 million -83.2%N/A0 $4.34 8/14/20203,820,000 shares $20.15 million -72.3%N/A0.1 $5.27 7/31/202013,770,000 shares $110.53 million -3.5%N/A0.4 $8.03 7/15/202014,270,000 shares $103.46 million +118.9%N/A0.4 $7.25 6/30/20206,520,000 shares $72.37 million +37.0%N/A0.2 $11.10 6/15/20204,760,000 shares $22.51 million -29.5%N/A0.2 $4.73 PPBT Short Interest - Frequently Asked Questions What is Purple Biotech's current short interest? Short interest is the volume of Purple Biotech shares that have been sold short but have not yet been covered or closed out. As of May 31st, traders have sold 165,700 shares of PPBT short. 6.00% of Purple Biotech's shares are currently sold short. Learn More on Purple Biotech's current short interest. What is a good short interest ratio for Purple Biotech? The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. PPBT shares currently have a short interest ratio of 2.0. Learn More on Purple Biotech's short interest ratio. What is a good short interest percentage for Purple Biotech? 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. 6.00% of Purple Biotech's floating shares are currently sold short. Is Purple Biotech's short interest increasing or decreasing? Purple Biotech saw a decrease in short interest in May. As of May 31st, there was short interest totaling 165,700 shares, a decrease of 9.6% from the previous total of 183,300 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 Purple Biotech's float size? Purple Biotech currently has issued a total of 1,331,000 shares. Some of Purple Biotech's 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. Purple Biotech currently has a public float of 2,760,000 shares. How does Purple Biotech's short interest compare to its competitors? 6.00% of Purple Biotech's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Purple Biotech: VYNE Therapeutics Inc. (2.46%), Ainos, Inc. (57.10%), Edesa Biotech, Inc. (0.25%), Synlogic, Inc. (0.51%), Eterna Therapeutics Inc. (0.45%), BioLineRx Ltd. (4.06%), Allarity Therapeutics, Inc. (9.11%), NextCure, Inc. (0.33%), 23andMe Holding Co. (11.90%), Equillium, Inc. (0.50%), 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), Strategy 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 Purple Biotech stock? Short selling PPBT is an investing strategy that aims to generate trading profit from Purple Biotech as its price is falling. PPBT shares are trading down $0.10 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 Purple Biotech? A short squeeze for Purple Biotech 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 PPBT, which in turn drives the price of the stock up even further. How often is Purple Biotech's 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 PPBT, twice per month. The most recent reporting period available is May, 31 2025. More Short Interest Resources from MarketBeat Related Companies VYNE Therapeutics Short Interest Data Ainos Short Interest Data Edesa Biotech Short Interest Data Synlogic Short Interest Data Eterna Therapeutics Short Interest Data BioLineRx Short Interest Data Allarity Therapeutics Short Interest Data NextCure Short Interest Data 23andMe Short Interest Data Equillium 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:PPBT) was last updated on 6/12/2025 by MarketBeat.com Staff From Our PartnersTrump’s Exec Order #14154 could be a “Millionaire-Maker”Former Presidential Advisor, Jim Rickards, says Trump could “rewire our economy and hand millions of Americans...Paradigm Press | SponsoredGold is soaring. 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