Armata Pharmaceuticals (ARMP) Short Interest Ratio & Short Volume $1.99 +0.11 (+5.85%) Closing price 06/25/2025 04:10 PM EasternExtended Trading$1.98 -0.01 (-0.50%) As of 06/25/2025 05:17 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 ForecastsChartEarningsHeadlinesOwnershipSEC FilingsShort InterestBuy This Stock Armata Pharmaceuticals Short Interest DataArmata Pharmaceuticals (ARMP) has a short interest of 178,800 shares, representing 1.66% of the float (the number of shares available for trading by the public). This marks a 4,157.14% increase in short interest from the previous month. The short interest ratio (days to cover) is 0.7, indicating that it would take 0.7 days of the average trading volume of 69,934 shares to cover all short positions.Current Short Interest178,800 sharesPrevious Short Interest4,200 sharesChange Vs. Previous Month+4,157.14%Dollar Volume Sold Short$339.72 thousandShort Interest Ratio0.7 Days to CoverLast Record DateMay 31, 2025Outstanding Shares36,190,000 sharesFloat Size10,790,000 sharesShort Percent of Float1.66%Today's Trading Volume31,794 sharesAverage Trading Volume69,934 sharesToday's Volume Vs. Average45% Short Selling Armata Pharmaceuticals? Sign up to receive the latest short interest report for Armata 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 ChartARMP Short Interest Over TimeARMP Days to Cover Over TimeARMP Percentage of Float Shorted Over Time Armata 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 5/31/2025178,800 shares $339.72 thousand +4,157.1%1.7%0.7 $1.90 5/15/20254,200 shares $5.88 thousand -44.0%0.0%0 $1.40 4/30/20257,500 shares $11.93 thousand +19.1%0.1%0.4 $1.59 4/15/20256,300 shares $7.25 thousand +75.0%0.1%0.4 $1.15 3/31/20253,600 shares $5.26 thousand -53.3%0.0%0.2 $1.46 3/15/20257,700 shares $15.02 thousand +28.3%0.1%0.6 $1.95 2/28/20256,000 shares $0.00 -15.5%0.1%0.5 $0.00 2/15/20257,100 shares $0.00 -61.8%0.1%0.6 $0.00 1/31/202518,600 shares $0.00 +7.5%0.2%1.7 $0.00 1/15/202517,300 shares $0.00 -6.5%0.2%1.5 $0.00 Get the Latest News and Ratings for ARMP and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Armata Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 12/31/202418,500 shares $0.00 +203.3%0.2%1.7 $0.00 12/15/20246,100 shares $0.00 +125.9%0.1%0.7 $0.00 11/30/20242,700 shares $0.00 -66.3%0.0%0.4 $0.00 11/15/20248,000 shares $0.00 +77.8%0.1%1.1 $0.00 10/31/20244,500 shares $0.00 -23.7%0.0%0.6 $0.00 10/15/20245,900 shares $0.00 +73.5%0.1%0.8 $0.00 9/30/20243,400 shares $0.00 -35.9%0.0%0.4 $0.00 9/15/20245,300 shares $0.00 -24.3%0.1%0.6 $0.00 8/31/20247,000 shares $0.00 +11.1%0.1%0.8 $0.00 8/15/20246,300 shares $0.00 +133.3%0.1%0.6 $0.00 7/31/20242,700 shares $0.00 -12.9%0.0%0.2 $0.00 7/15/20243,100 shares $0.00 -44.6%0.0%0.3 $0.00 6/30/20245,600 shares $0.00 +522.2%0.1%0.5 $0.00 6/15/2024900 shares $0.00 -60.9%0.0%0.1 $0.00 5/31/20242,300 shares $0.00 +187.5%0.0%0.2 $0.00 5/15/2024800 shares $0.00 -92.5%0.0%0 $0.00 4/30/202410,700 shares $0.00 +8.1%0.1%0.7 $0.00 4/15/20249,900 shares $0.00 -30.3%0.1%0.6 $0.00 3/31/202414,200 shares $0.00 +6.8%0.1%0.8 $0.00 3/15/202413,300 shares $0.00 -55.1%0.1%0.6 $0.00 2/29/202429,600 shares $0.00 -32.0%0.3%1.5 $0.00 2/15/202443,500 shares $0.00 -5.2%0.4%2.4 $0.00 1/31/202445,900 shares $0.00 -17.9%0.4%2.6 $0.00 1/15/202455,900 shares $0.00 -31.1%0.5%3.2 $0.00 12/31/202381,100 shares $0.00 -18.2%0.8%5 $0.00 12/15/202399,100 shares $0.00 +9.4%0.9%7.1 $0.00 11/30/202390,600 shares $0.00 -8.3%0.8%5.1 $0.00 11/15/202398,800 shares $0.00 -0.9%0.9%4.4 $0.00 10/31/202399,700 shares $0.00 -25.4%0.9%2.6 $0.00 10/15/2023133,700 shares $0.00 -19.6%1.2%1 $0.00Is Elon's empire crumbling? 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Click here to see the Tesla shock that could blindside everyone. 9/30/2023166,200 shares $0.00 -4.3%1.5%0.9 $0.00 9/15/2023173,700 shares $0.00 -6.8%1.6%1 $0.00 8/31/2023186,300 shares $0.00 -11.8%1.7%1.1 $0.00 8/15/2023211,100 shares $0.00 -21.5%1.9%1.3 $0.00 7/31/2023268,800 shares $0.00 +688.3%2.5%1.8 $0.00 7/15/202334,100 shares $0.00 +14.8%0.3%0.7 $0.00 6/30/202329,700 shares $0.00 +13.4%0.3%4 $0.00 6/15/202326,200 shares $0.00 +19.6%0.2%3.4 $0.00 5/31/202321,900 shares $0.00 No Change0.2%2.3 $0.00 5/15/202321,900 shares $0.00 -41.8%0.2%1.7 $0.00 4/30/202337,600 shares $0.00 +15.7%0.3%2.9 $0.00 4/15/202332,500 shares $0.00 +18.6%0.3%2.1 $0.00 3/31/202327,400 shares $0.00 -21.5%0.3%1.6 $0.00 3/15/202334,900 shares $0.00 +52.4%0.3%1.6 $0.00 2/28/202322,900 shares $0.00 -3.0%0.2%1 $0.00 2/15/202323,600 shares $0.00 -9.2%0.2%1.1 $0.00 1/31/202326,000 shares $0.00 -31.8%0.2%1.2 $0.00 1/15/202338,100 shares $0.00 +45.4%0.4%1.9 $0.00 12/30/202226,200 shares $0.00 -51.1%0.2%1.5 $0.00 12/15/202253,600 shares $0.00 +31.1%0.5%3.7 $0.00 11/30/202240,900 shares $0.00 -14.6%0.4%4.4 $0.00 11/15/202247,900 shares $0.00 -14.2%0.4%7.5 $0.00 10/31/202255,800 shares $0.00 -12.4%0.5%10.3 $0.00 10/15/202263,700 shares $0.00 -3.0%0.6%15.2 $0.00 9/30/202265,700 shares $0.00 -17.2%0.6%16.4 $0.00 9/15/202279,300 shares $0.00 +7.0%0.7%20.9 $0.00 8/31/202274,100 shares $0.00 +1.7%0.7%19 $0.00 8/15/202272,900 shares $0.00 +0.6%0.7%18.7 $0.00 7/31/202272,500 shares $0.00 -1.0%0.7%15.4 $0.00 7/15/202273,200 shares $0.00 -0.5%0.7%14.4 $0.00 6/30/202273,600 shares $286.30 thousand -20.6%0.7%12.1 $3.89 6/15/202292,700 shares $0.00 -18.8%0.9%13.8 $0.00 5/31/2022114,100 shares $0.00 -9.7%1.8%13.6 $0.00 5/15/2022126,400 shares $0.00 -9.8%2.0%13 $0.00 4/30/2022140,100 shares $0.00 -6.5%2.6%11.9 $0.00 4/15/2022149,800 shares $0.00 +6.4%2.8%10.2 $0.00 3/31/2022140,800 shares $0.00 +0.2%7.1%7.9 $0.00 3/15/2022140,500 shares $0.00 +2.6%1.7%6.8 $0.00 2/28/2022136,900 shares $0.00 +1.9%1.9%6 $0.00 2/15/2022134,400 shares $0.00 +4.4%1.9%4.2 $0.00 1/31/2022128,800 shares $0.00 -6.8%1.2%3.4 $0.00 1/15/2022138,200 shares $0.00 +15.6%1.3%2.9 $0.00 12/31/2021119,600 shares $0.00 +68.5%1.1%2.6 $0.00 12/15/202171,000 shares $0.00 -17.7%0.7%1.6 $0.00 11/30/202186,300 shares $0.00 +992.4%0.9%2.3 $0.00 11/15/20217,900 shares $0.00 +113.5%0.1%0.2 $0.00 10/29/20213,700 shares $11.84 thousand -75.8%0.0%0.2 $3.20 10/15/202115,300 shares $0.00 -52.0%0.2%2.6 $0.00 9/30/202131,900 shares $0.00 -12.1%0.3%5.1 $0.00 9/15/202136,300 shares $0.00 -6.9%0.4%4.9 $0.00Is Elon's empire crumbling? 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Click here to see the Tesla shock that could blindside everyone. 8/31/202139,000 shares $0.00 +2.1%0.4%4.9 $0.00 8/13/202138,200 shares $0.00 -3.1%0.4%5.1 $0.00 7/30/202139,400 shares $0.00 -15.1%0.4%4.7 $0.00 7/15/202146,400 shares $0.00 +8.2%0.5%5.3 $0.00 6/30/202142,900 shares $0.00 -9.5%0.4%4.7 $0.00 6/15/202147,400 shares $0.00 -2.3%0.5%4.3 $0.00 5/28/202148,500 shares $0.00 +3.9%0.5%3.4 $0.00 5/14/202146,700 shares $0.00 -3.9%N/A2.4 $0.00 4/30/202148,600 shares $0.00 +2.1%N/A2.1 $0.00 4/15/202147,600 shares $195.16 thousand -5.0%N/A1 $4.10 3/31/202150,100 shares $218.44 thousand -7.1%N/A1 $4.36 3/15/202153,900 shares $232.31 thousand -8.0%1.0%1 $4.31 2/26/202158,600 shares $322.30 thousand +5.2%N/A1.1 $5.50 2/12/202155,700 shares $291.87 thousand -44.1%N/A1.1 $5.24 1/29/202199,600 shares $572.70 thousand -4.4%1.3%1.9 $5.75 1/15/2021104,200 shares $650.21 thousand -6.0%1.2%4 $6.24 12/31/2020110,800 shares $325.75 thousand +106.7%1.3%4.4 $2.94 12/15/202053,600 shares $150.08 thousand +215.3%0.6%2.4 $2.80 11/30/202017,000 shares $53.89 thousand -57.2%0.2%1 $3.17 11/15/202039,700 shares $144.91 thousand +31.0%0.5%2.7 $3.65 10/30/202030,300 shares $97.26 thousand -5.6%0.4%2.4 $3.21 10/15/202032,100 shares $103.20 thousand +13.0%0.4%2.1 $3.22 9/30/202028,400 shares $90.60 thousand -11.0%N/A1.8 $3.19 9/15/202031,900 shares $115.48 thousand -25.8%N/A1.9 $3.62 8/31/202043,000 shares $139.32 thousand -1.2%N/A2 $3.24 8/14/202043,500 shares $150.51 thousand -19.4%N/A1.9 $3.46 7/31/202054,000 shares $200.88 thousand +10.0%N/A2.3 $3.72 7/15/202049,100 shares $190.02 thousand -16.6%N/A2.3 $3.87 6/30/202058,900 shares $238.55 thousand +90.0%N/A2.8 $4.05 ARMP Short Interest - Frequently Asked Questions What is Armata Pharmaceuticals' current short interest? Short interest is the volume of Armata Pharmaceuticals shares that have been sold short but have not yet been closed out or covered. As of May 31st, traders have sold 178,800 shares of ARMP short. 1.66% of Armata Pharmaceuticals' shares are currently sold short. Learn More on Armata Pharmaceuticals' current short interest. What is a good short interest ratio for Armata Pharmaceuticals? 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. ARMP shares currently have a short interest ratio of 1.0. Learn More on Armata Pharmaceuticals's short interest ratio. What is a good short interest percentage for Armata 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. 1.66% of Armata Pharmaceuticals' floating shares are currently sold short. Is Armata Pharmaceuticals' short interest increasing or decreasing? Armata Pharmaceuticals saw a increase in short interest during the month of May. As of May 31st, there was short interest totaling 178,800 shares, an increase of 4,157.1% from the previous total of 4,200 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 Armata Pharmaceuticals' float size? Armata Pharmaceuticals currently has issued a total of 36,190,000 shares. Some of Armata 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. Armata Pharmaceuticals currently has a public float of 10,790,000 shares. How does Armata Pharmaceuticals' short interest compare to its competitors? 1.66% of Armata Pharmaceuticals' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Armata Pharmaceuticals: Cartesian Therapeutics, Inc. (30.69%), Atea Pharmaceuticals, Inc. (4.40%), 2seventy bio, Inc. (5.37%), Inozyme Pharma, Inc. (8.49%), Candel Therapeutics, Inc. (16.16%), Prima BioMed Ltd (2.93%), Sagimet Biosciences Inc. (15.50%), Cardiff Oncology, Inc. (37.39%), Nanobiotix S.A. Sponsored ADR (0.01%), DBV Technologies S.A. (0.08%), 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 Armata Pharmaceuticals stock? Short selling ARMP is an investing strategy that aims to generate trading profit from Armata Pharmaceuticals as its price is falling. ARMP shares are trading up $0.07 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 Armata Pharmaceuticals? A short squeeze for Armata Pharmaceuticals 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 ARMP, which in turn drives the price of the stock up even further. How often is Armata 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 ARMP, twice per month. The most recent reporting period available is May, 31 2025. More Short Interest Resources from MarketBeat Related Companies Cartesian Therapeutics Short Squeeze Atea Pharmaceuticals Short Squeeze 2seventy bio Short Squeeze Inozyme Pharma Short Squeeze Candel Therapeutics Short Squeeze Prima BioMed Short Squeeze Sagimet Biosciences Short Squeeze Cardiff Oncology Short Squeeze Nanobiotix Short Squeeze DBV Technologies Short Squeeze Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NYSEAMERICAN:ARMP) was last updated on 6/26/2025 by MarketBeat.com Staff From Our PartnersThe Trump Dump is starting; Get out of stocks now?The first 365 days of the Trump presidency… Will be the best time to get rich in American history.Paradigm Press | SponsoredTrump set to Boost Social Security Checks by 400%?If you're collecting or planning to collect social security... 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