Prima BioMed (IMMP) Short Interest Ratio & Short Volume $1.70 +0.05 (+3.03%) Closing price 07/2/2025 04:00 PM EasternExtended Trading$1.71 +0.01 (+0.82%) As of 07/2/2025 06:08 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 AnalysisAnalyst ForecastsChartCompetitorsHeadlinesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Prima BioMed Short Interest DataPrima BioMed (IMMP) has a short interest of 4.19 million shares, representing 2.96% of the float (the number of shares available for trading by the public). This marks a 1.21% increase in short interest from the previous month. The short interest ratio (days to cover) is 14.8, indicating that it would take 14.8 days of the average trading volume of 192,322 shares to cover all short positions.Current Short Interest4,190,000 sharesPrevious Short Interest4,140,000 sharesChange Vs. Previous Month+1.21%Dollar Volume Sold Short$7.29 millionShort Interest Ratio14.8 Days to CoverLast Record DateJune 15, 2025Outstanding Shares146,040,000 sharesShort Percent of Float2.96%Today's Trading Volume62,731 sharesAverage Trading Volume192,322 sharesToday's Volume Vs. Average33% Short Selling Prima BioMed? Sign up to receive the latest short interest report for Prima BioMed and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartIMMP Short Interest Over TimeIMMP Days to Cover Over TimeIMMP Percentage of Float Shorted Over Time Prima BioMed Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 6/15/20254,190,000 shares $7.29 million +1.2%3.0%14.8 $1.74 5/31/20254,140,000 shares $7.91 million +1.0%2.9%15.1 $1.91 5/15/20254,100,000 shares $8.12 million +1.0%2.9%15 $1.98 4/30/20254,060,000 shares $6.94 million -1.7%N/A15.9 $1.71 4/15/20254,130,000 shares $6.24 million -8.8%2.9%54.2 $1.51 3/31/20254,530,000 shares $7.97 million -4.6%3.2%58.5 $1.76 3/15/20254,750,000 shares $8.46 million -5.6%3.4%57.7 $1.78 2/28/20255,030,000 shares $9.71 million -1.2%3.6%47.6 $1.93 2/15/20255,090,000 shares $9.98 million -0.4%3.6%48.9 $1.96 1/31/20255,110,000 shares $10.68 million +1.0%N/A43.1 $2.09 Get the Latest News and Ratings for IMMP and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Prima BioMed and its competitors with MarketBeat's FREE daily newsletter. 1/15/20255,060,000 shares $9.72 million -1.2%N/A43 $1.92 12/31/20245,120,000 shares $11.11 million No ChangeN/A43.4 $2.17 12/15/20245,120,000 shares $11.16 million +0.8%N/A43.5 $2.18 11/30/20245,080,000 shares $10.31 million -1.0%N/A44.7 $2.03 11/15/20245,130,000 shares $10.52 million +2.4%N/A44.9 $2.05 10/31/20245,010,000 shares $9.09 million +0.8%N/A45.2 $1.82 10/15/20244,970,000 shares $10.24 million +4.2%N/A38.2 $2.06 9/30/20244,770,000 shares $10.54 million -0.6%N/A17.5 $2.21 9/15/20244,800,000 shares $12.67 million -0.6%N/A14.4 $2.64 8/31/20244,830,000 shares $12.70 million -2.2%N/A14.2 $2.63 8/15/20244,940,000 shares $10.72 million +4.4%N/A13.6 $2.17 7/31/20244,730,000 shares $10.22 million -10.1%N/A12.7 $2.16 7/15/20245,260,000 shares $10.73 million +18.5%N/A12.4 $2.04 6/30/20244,440,000 shares $8.92 million +6.2%N/A15 $2.01 6/15/20244,180,000 shares $11.33 million +6.6%N/A16.9 $2.71 5/31/20243,920,000 shares $11.68 million +5.1%N/A16.7 $2.98 5/15/20243,730,000 shares $10.52 million +38.7%N/A16.4 $2.82 4/30/20242,690,000 shares $7.24 million +84.3%N/A13.1 $2.69 4/15/20241,460,000 shares $3.37 million +15.9%N/A9.2 $2.31 3/31/20241,260,000 shares $2.94 million +10.5%N/A8.9 $2.33 3/15/20241,140,000 shares $2.72 million +5.6%N/A8.7 $2.39 2/29/20241,080,000 shares $2.53 million -0.9%N/A6.8 $2.34 2/15/20241,090,000 shares $2.51 million +25.3%N/A8 $2.30 1/31/2024869,600 shares $1.89 million +53.4%N/A6.1 $2.17 1/15/2024566,800 shares $1.46 million +4.9%N/A3.2 $2.58 12/31/2023540,200 shares $1.30 million +51.4%N/A3 $2.40 12/15/2023356,700 shares $888.18 thousand +3.5%N/A2.1 $2.49 11/30/2023344,700 shares $685.95 thousand -8.1%N/A2.4 $1.99 11/15/2023375,200 shares $690.37 thousand -7.1%N/A2.5 $1.84 10/31/2023403,900 shares $763.37 thousand -11.9%N/A2.8 $1.89How to Collect Up To $5,917/mo From Trump’s Made In USA Boom (Ad)How to Collect Up To $5,917/mo From Trump's Made In USA Boom Thanks to President Trump's America-First policies, a historic wave of investment is flooding back into the United States: Apple committing a colossal $500 billion to build new U.S. factories. Microsoft injecting $80 billion into domestic manufacturing. Nvidia moving critical chip production back to America. But here's the hidden opportunity: There's now a groundbreaking way for you to start collecting monthly checks from these very same companies— checks that could reach as high as $5,917 each month. Don't miss your chance to participate directly in America's industrial comeback. Watch Now to Learn How to Get Your First Check in 30 Days 10/15/2023458,300 shares $843.27 thousand -3.5%N/A3 $1.84 9/30/2023474,800 shares $902.12 thousand -2.1%N/A3.5 $1.90 9/15/2023485,200 shares $980.10 thousand +2.0%N/A3 $2.02 8/31/2023475,600 shares $903.64 thousand +10.9%N/A2.6 $1.90 8/15/2023428,800 shares $861.89 thousand +12.5%N/A1.4 $2.01 7/31/2023381,100 shares $823.18 thousand +29.6%N/A0.2 $2.16 7/15/2023294,000 shares $640.92 thousand -40.0%N/A0.2 $2.18 6/30/2023490,300 shares $1.03 million -26.4%N/A0.3 $2.11 6/15/2023666,200 shares $1.42 million +1.9%N/A0.4 $2.13 5/31/2023653,800 shares $1.31 million -16.1%N/A0.4 $2.01 5/15/2023779,500 shares $1.20 million -0.4%N/A0.5 $1.54 4/30/2023782,600 shares $1.28 million -15.3%N/A9 $1.64 4/15/2023923,400 shares $1.47 million +16.4%N/A10.6 $1.59 3/31/2023793,500 shares $1.33 million -3.0%N/A10 $1.68 3/15/2023818,000 shares $1.42 million -0.6%N/A6 $1.73 2/28/2023822,900 shares $1.34 million +1.3%N/A5.6 $1.63 2/15/2023812,600 shares $1.44 million +5.0%N/A5 $1.77 1/31/2023773,800 shares $1.51 million +65.0%N/A4.4 $1.95 1/15/2023469,100 shares $942.89 thousand +8.1%N/A2.7 $2.01 12/30/2022434,000 shares $759.50 thousand +112.2%N/A2.6 $1.75 12/15/2022204,500 shares $384.46 thousand +9.1%N/A1.3 $1.88 11/30/2022187,400 shares $449.76 thousand -4.8%N/A2.1 $2.40 11/15/2022196,800 shares $429.02 thousand +4.7%N/A2.7 $2.18 10/31/2022188,000 shares $336.52 thousand -18.9%N/A2.8 $1.79 10/15/2022231,700 shares $443.71 thousand +32.5%N/A4 $1.92 9/30/2022174,900 shares $272.84 thousand +34.4%N/A3 $1.56 9/15/2022130,100 shares $243.29 thousand -12.3%N/A2.3 $1.87 8/31/2022148,400 shares $299.77 thousand +2.5%N/A2.1 $2.02 8/15/2022144,800 shares $327.25 thousand -6.9%N/A1.4 $2.26 7/31/2022155,500 shares $351.43 thousand -15.5%N/A1.5 $2.26 7/15/2022184,100 shares $386.61 thousand -13.1%N/A1.6 $2.10 6/30/2022211,800 shares $429.95 thousand -17.0%N/A1.8 $2.03 6/15/2022255,200 shares $548.68 thousand +12.9%N/A2 $2.15 5/31/2022226,100 shares $671.52 thousand +9.5%N/A1.6 $2.97 5/15/2022206,400 shares $497.42 thousand -10.6%N/A1.6 $2.41 4/30/2022230,800 shares $528.53 thousand +16.6%N/A1.7 $2.29 4/15/2022198,000 shares $504.90 thousand -6.7%N/A1.2 $2.55 3/31/2022212,100 shares $581.15 thousand -2.7%N/A1.2 $2.74 3/15/2022217,900 shares $542.57 thousand +20.5%N/A1.2 $2.49 2/28/2022180,900 shares $437.78 thousand +0.7%N/A0.9 $2.42 2/15/2022179,600 shares $470.55 thousand +18.8%N/A0.9 $2.62 1/31/2022151,200 shares $415.80 thousand +0.6%N/A0.5 $2.75 1/15/2022150,300 shares $486.97 thousand +13.4%N/A0 $3.24 12/31/2021132,600 shares $434.93 thousand +140.2%N/A0.4 $3.28 12/15/202155,200 shares $185.47 thousand -53.6%N/A0.2 $3.36 11/30/2021118,900 shares $407.83 thousand -44.3%N/A0.3 $3.43 11/15/2021213,300 shares $908.66 thousand +110.4%N/A0.6 $4.26 10/29/2021101,400 shares $433.99 thousand +83.0%N/A0.3 $4.28 10/15/202155,400 shares $218.83 thousand -97.9%N/A0.2 $3.95 9/30/20212,640,000 shares $10.22 million +3.9%N/A9.1 $3.87How to Collect Up To $5,917/mo From Trump’s Made In USA Boom (Ad)How to Collect Up To $5,917/mo From Trump's Made In USA Boom Thanks to President Trump's America-First policies, a historic wave of investment is flooding back into the United States: Apple committing a colossal $500 billion to build new U.S. factories. Microsoft injecting $80 billion into domestic manufacturing. Nvidia moving critical chip production back to America. But here's the hidden opportunity: There's now a groundbreaking way for you to start collecting monthly checks from these very same companies— checks that could reach as high as $5,917 each month. Don't miss your chance to participate directly in America's industrial comeback. Watch Now to Learn How to Get Your First Check in 30 Days 9/15/20212,540,000 shares $9.75 million -3.1%N/A7.8 $3.84 8/31/20212,620,000 shares $11.11 million +13.4%N/A7.7 $4.24 8/13/20212,310,000 shares $8.22 million +17.9%N/A5.3 $3.56 7/30/20211,960,000 shares $6.70 million +44.1%N/A3.1 $3.42 7/15/20211,360,000 shares $4.80 million +155.9%N/A2 $3.53 6/30/2021531,400 shares $2.06 million +573.5%N/A0.8 $3.87 6/15/202178,900 shares $362.94 thousand -83.8%N/A0 $4.60 5/28/2021485,800 shares $2.45 million +89.4%N/A0.2 $5.04 5/14/2021256,500 shares $884.93 thousand +11.5%N/A0.1 $3.45 4/30/2021230,100 shares $796.15 thousand +93.7%N/A0.1 $3.46 4/15/2021118,800 shares $413.42 thousand -64.7%N/A0 $3.48 3/31/2021336,200 shares $968.26 thousand +122.4%N/A0.1 $2.88 3/15/2021151,200 shares $408.24 thousand +132.6%N/A0.2 $2.70 2/26/202165,000 shares $174.85 thousand +3.2%N/A0 $2.69 2/12/202163,000 shares $212.31 thousand +12.1%N/A0 $3.37 1/29/202156,200 shares $174.22 thousand -72.6%N/A0 $3.10 1/15/2021204,800 shares $716.80 thousand +558.5%N/A0 $3.50 12/31/202031,100 shares $96.10 thousand -96.9%N/A0 $3.09 12/15/2020996,400 shares $2.98 million +301.5%N/A0.2 $2.99 11/30/2020248,200 shares $471.58 thousand -20.7%N/A0.9 $1.90 11/15/2020313,100 shares $670.03 thousand +3.2%N/A1 $2.14 10/30/2020303,500 shares $543.27 thousand -14.1%N/A1 $1.79 10/15/2020353,100 shares $607.33 thousand -11.6%N/A0.9 $1.72 9/30/2020399,300 shares $690.79 thousand -5.8%N/A0.3 $1.73 9/15/2020423,900 shares $682.48 thousand +35.9%N/A0.3 $1.61 8/31/2020311,900 shares $414.83 thousand -36.7%N/A0.2 $1.33 8/14/2020492,800 shares $625.86 thousand +18.9%N/A0.3 $1.27 7/31/2020414,400 shares $555.30 thousand +430.6%N/A0.3 $1.34 7/15/202078,100 shares $85.91 thousand -0.1%N/A0 $1.10 IMMP Short Interest - Frequently Asked Questions What is Prima BioMed's current short interest? Short interest is the volume of Prima BioMed shares that have been sold short but have not yet been covered or closed out. As of June 15th, investors have sold 4,190,000 shares of IMMP short. 2.96% of Prima BioMed's shares are currently sold short. Learn More on Prima BioMed's current short interest. What is a good short interest ratio for Prima BioMed? 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. IMMP shares currently have a short interest ratio of 15.0. Learn More on Prima BioMed's short interest ratio. Which institutional investors are shorting Prima BioMed? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Prima BioMed: Simplex Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Prima BioMed? 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. 2.96% of Prima BioMed's floating shares are currently sold short. Is Prima BioMed's short interest increasing or decreasing? Prima BioMed saw a increase in short interest in June. As of June 15th, there was short interest totaling 4,190,000 shares, an increase of 1.2% from the previous total of 4,140,000 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 Prima BioMed's short interest compare to its competitors? 2.96% of Prima BioMed's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Prima BioMed: Spyre Therapeutics, Inc. (24.53%), Mineralys Therapeutics, Inc. (15.19%), Avadel Pharmaceuticals PLC. (11.58%), Pharvaris N.V. (4.50%), Nurix Therapeutics, Inc. (20.45%), Ardelyx, Inc. (11.98%), Oric Pharmaceuticals, Inc. (16.01%), Praxis Precision Medicines, Inc. (9.55%), Zymeworks Inc. (10.16%), LENZ Therapeutics, Inc. (15.60%), 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 ($69.26 billion), Invesco QQQ ($25.22 billion), iShares Russell 2000 ETF ($20.33 billion), iShares 20+ Year Treasury Bond ETF ($9.99 billion), MicroStrategy Incorporated ($9.12 billion), Canadian Natural Resources Limited ($6.73 billion), SPDR S&P Biotech ETF ($6.52 billion), Invesco S&P 500 Equal Weight ETF ($5.60 billion), Financial Select Sector SPDR Fund ($4.64 billion), and iShares iBoxx $ Investment Grade Corporate Bond ETF ($4.59 billion). View all of the most shorted stocks. What does it mean to sell short Prima BioMed stock? Short selling IMMP is an investing strategy that aims to generate trading profit from Prima BioMed as its price is falling. IMMP shares are trading up $0.05 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 Prima BioMed? A short squeeze for Prima BioMed 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 IMMP, which in turn drives the price of the stock up even further. How often is Prima BioMed'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 IMMP, twice per month. The most recent reporting period available is June, 15 2025. More Short Interest Resources from MarketBeat Related Companies Spyre Therapeutics Short Interest Mineralys Therapeutics Short Interest Avadel Pharmaceuticals Short Interest Pharvaris Short Interest Nurix Therapeutics Short Interest Ardelyx Short Interest Oric Pharmaceuticals Short Interest Praxis Precision Medicines Short Interest Zymeworks Short Interest LENZ Therapeutics Short Interest Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:IMMP) was last updated on 7/3/2025 by MarketBeat.com Staff From Our PartnersTrump’s New Order Could Boost Social Security Benefits by 400%If you collect—or plan to collect—Social Security, you need to see this. A new initiative tied to President...InvestorPlace | SponsoredThe $15 Gold Fund That Pays Up to $1,152/MonthGold prices are breaking records. 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