Pulmatrix (PULM) Short Interest Ratio & Short Volume $6.66 -0.11 (-1.61%) As of 04/25/2025 04:00 PM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisChartCompetitorsEarningsHeadlinesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Pulmatrix Short Interest DataPulmatrix (PULM) has a short interest of 25,200 shares, representing 0.69% of the float (the number of shares available for trading by the public). This marks a -31.71% decrease in short interest from the previous month. The short interest ratio (days to cover) is 0.9, indicating that it would take 0.9 days of the average trading volume of 133,118 shares to cover all short positions.Current Short Interest25,200 sharesPrevious Short Interest36,900 sharesChange Vs. Previous Month-31.71%Dollar Volume Sold Short$136,080.00Short Interest Ratio0.9 Days to CoverLast Record DateApril 15, 2025Outstanding Shares3,650,000 sharesFloat Size3,650,000 sharesShort Percent of Float0.69%Today's Trading Volume8,398 sharesAverage Trading Volume133,118 sharesToday's Volume Vs. Average6% Short Selling Pulmatrix? Sign up to receive the latest short interest report for Pulmatrix and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartPULM Short Interest Over TimePULM Days to Cover Over TimePULM Percentage of Float Shorted Over Time Pulmatrix Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 4/15/202525,200 shares $136,080.00 -31.7%0.7%0.9 $5.40 3/31/202536,900 shares $245,754.00 -2.6%1.0%1.2 $6.66 3/15/202537,900 shares $320,634.00 +9.5%1.0%1.1 $8.46 2/28/202534,600 shares $279,568.00 -10.4%1.0%0.7 $8.08 2/15/202538,600 shares $298,378.00 -27.0%1.1%0.5 $7.73 1/31/202552,900 shares $407,330.00 +10.9%1.5%0.1 $7.70 1/15/202547,700 shares $283,338.00 +20.8%1.3%0.1 $5.94 12/31/202439,500 shares $275,710.00 -47.3%1.1%0.1 $6.98 12/15/202474,900 shares $430,675.00 +27.8%2.1%0.2 $5.75 11/30/202458,600 shares $389,104.00 -85.8%1.6%0.1 $6.64 Get the Latest News and Ratings for PULM and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Pulmatrix and its competitors with MarketBeat's FREE daily newsletter. 11/15/2024411,600 shares $2.70 million +5,697.2%11.3%1 $6.56 10/31/20247,100 shares $15,620.00 +9.2%0.2%0.6 $2.20 10/15/20246,500 shares $13,585.00 +27.5%0.2%0.6 $2.09 9/30/20245,100 shares $10,914.00 -20.3%0.1%0.5 $2.14 9/15/20246,400 shares $12,864.00 +25.5%0.2%0.5 $2.01 8/31/20245,100 shares $10,557.00 -37.0%0.1%0.5 $2.07 8/15/20248,100 shares $17,241.66 -31.4%0.2%0.7 $2.13 7/31/202411,800 shares $25,606.00 +126.9%0.3%1.1 $2.17 7/15/20245,200 shares $10,680.80 +372.7%0.1%0.5 $2.05 6/30/20241,100 shares $2,123.00 +120.0%0.0%0.1 $1.93 6/15/2024500 shares $958.85 -77.3%0.0%0 $1.92 5/31/20242,200 shares $4,114.00 +450.0%0.1%0.2 $1.87 5/15/2024400 shares $732.00 -86.2%0.0%0 $1.83 4/30/20242,900 shares $5,510.29 -74.8%0.1%0.2 $1.90 4/15/202411,500 shares $24,035.00 +325.9%0.3%0.7 $2.09 3/31/20242,700 shares $4,725.00 +575.0%0.1%0.2 $1.75 3/15/2024400 shares $672.00 -97.4%0.0%0 $1.68 2/29/202415,300 shares $30,447.00 +91.3%0.4%0.9 $1.99 2/15/20248,000 shares $14,720.00 +27.0%0.2%0.4 $1.84 1/31/20246,300 shares $10,899.00 +350.0%0.2%0.4 $1.73 1/15/20241,400 shares $2,741.20 -68.2%0.0%0.1 $1.96 12/31/20234,400 shares $8,184.00 -44.3%0.1%0.3 $1.86 12/15/20237,900 shares $14,931.00 +27.4%0.2%0.6 $1.89 11/30/20236,200 shares $12,772.00 +195.2%0.2%0.6 $2.06 11/15/20232,100 shares $3,780.00 -38.2%0.1%0.2 $1.80 10/31/20233,400 shares $6,426.00 -12.8%0.1%0.3 $1.89 10/15/20233,900 shares $7,927.92 -20.4%0.1%0.3 $2.03 9/30/20234,900 shares $9,947.00 +14.0%0.1%0.4 $2.03 9/15/20234,300 shares $9,847.00 +59.3%0.1%0.3 $2.29 8/31/20232,700 shares $6,345.00 -20.6%0.1%0.2 $2.35The most powerful man in D.C. (Ad)Is there anybody more powerful than Donald Trump right now? In a single tariff announcement, he wiped out nearly $5 trillion in wealth from the S&P 500 and $6.4 trillion from the Dow Jones… Not to mention the countless trillions of dollars lost in every market around the world… leaving the major political powers scrambling in fear of Trump’s next move.Whether you take some of that wealth for yourself depends on if you watch this controversial exposé 8/15/20233,400 shares $8,551.00 +88.9%0.1%0.2 $2.52 7/31/20231,800 shares $4,770.00 -45.5%0.1%0.1 $2.65 7/15/20233,300 shares $8,943.00 -41.1%0.1%0.2 $2.71 6/30/20235,600 shares $15,008.00 -47.2%0.2%0.4 $2.68 6/15/202310,600 shares $29,362.00 +120.8%0.3%0.7 $2.77 5/31/20234,800 shares $13,102.56 +29.7%0.1%0.3 $2.73 5/15/20233,700 shares $9,953.00 +184.6%0.1%0.2 $2.69 4/30/20231,300 shares $3,821.22 -55.2%0.0%0.1 $2.94 4/15/20232,900 shares $8,613.00 No Change0.1%0.1 $2.97 3/31/20232,900 shares $8,468.00 -64.2%0.1%0.1 $2.92 3/15/20238,100 shares $25,272.00 -13.8%0.2%0.2 $3.12 2/28/20239,400 shares $32,427.18 -36.5%0.3%0.2 $3.45 2/15/202314,800 shares $55,500.00 -56.7%0.4%0.4 $3.75 1/31/202334,200 shares $137,826.00 -24.7%0.9%0.9 $4.03 1/15/202345,400 shares $196,582.00 +17.0%1.3%1.2 $4.33 12/30/202238,800 shares $150,544.00 -7.2%1.1%1 $3.88 12/15/202241,800 shares $156,332.00 +3.0%1.2%2 $3.74 11/30/202240,600 shares $151,844.00 -21.2%1.1%1.7 $3.74 11/15/202251,500 shares $201,880.00 -1.9%1.4%0.6 $3.92 10/31/202252,500 shares $180,600.00 -19.9%1.6%0.6 $3.44 10/15/202265,500 shares $235,145.00 -24.2%1.9%0.5 $3.59 9/30/202286,400 shares $308,448.00 -17.2%2.6%0.7 $3.57 9/15/2022104,400 shares $463,536.00 -28.4%3.1%0.8 $4.44 8/31/2022145,700 shares $643,994.00 +840.0%4.3%1.2 $4.42 8/15/202215,500 shares $73,625.00 -1.3%0.5%0.2 $4.75 7/31/202215,700 shares $69,080.00 +36.5%0.5%0.3 $4.40 7/15/202211,500 shares $52,440.00 +6.5%0.3%0.7 $4.56 6/30/202210,800 shares $49,572.00 -44.0%0.3%0.7 $4.59 6/15/202219,300 shares $85,692.00 +10.3%0.6%1 $4.44 5/31/202217,500 shares $94,500.00 -23.3%0.5%0.6 $5.40 5/15/202222,800 shares $117,192.00 -17.7%0.7%0.5 $5.14 4/30/202227,700 shares $141,547.00 -74.4%0.8%0.6 $5.11 4/15/2022108,000 shares $640,440.00 -20.0%3.3%2.1 $5.93 3/31/2022135,000 shares $922,050.00 +40.5%4.1%2.5 $6.83 3/15/202296,100 shares $580,444.00 +359.8%3.0%1.4 $6.04 2/28/202220,900 shares $129,162.00 -92.1%0.6%0.3 $6.18 2/15/2022265,900 shares $96,787.60 -20.7%N/A0.2 $0.36 1/31/2022335,400 shares $132,483.00 -23.1%N/A0.3 $0.40 1/15/2022436,400 shares $174,123.60 -80.6%0.8%0.4 $0.40 12/31/20212,250,000 shares $985,500.00 +162.2%4.1%2 $0.44 12/15/2021858,100 shares $416,178.50 -16.7%1.6%0.9 $0.49 11/30/20211,030,000 shares $687,010.00 -20.2%1.9%1.9 $0.67 11/15/20211,290,000 shares $1.05 million +1.6%2.3%2.5 $0.81 10/29/20211,270,000 shares $1.10 million +9.5%2.3%2.7 $0.87 10/15/20211,160,000 shares $842,160.00 -4.9%2.1%4.3 $0.73 9/30/20211,220,000 shares $976,000.00 +6.1%2.2%4 $0.80 9/15/20211,150,000 shares $888,950.00 +9.5%2.1%3.5 $0.77 8/31/20211,050,000 shares $860,895.00 +13.8%1.9%2.8 $0.82 8/13/2021922,900 shares $719,862.00 +13.7%1.7%2 $0.78 7/30/2021811,900 shares $685,893.12 +28.4%1.5%1.5 $0.84The most powerful man in D.C. (Ad)Is there anybody more powerful than Donald Trump right now? In a single tariff announcement, he wiped out nearly $5 trillion in wealth from the S&P 500 and $6.4 trillion from the Dow Jones… Not to mention the countless trillions of dollars lost in every market around the world… leaving the major political powers scrambling in fear of Trump’s next move.Whether you take some of that wealth for yourself depends on if you watch this controversial exposé 7/15/2021632,500 shares $548,567.25 -14.3%1.1%1 $0.87 6/30/2021737,600 shares $767,104.00 -2.1%1.3%0.9 $1.04 6/15/2021753,400 shares $768,468.00 -9.3%1.4%0.9 $1.02 5/28/2021830,600 shares $772,873.30 -17.8%1.5%0.8 $0.93 5/14/20211,010,000 shares $839,108.00 -8.2%N/A0.7 $0.83 4/30/20211,100,000 shares $1.11 million +39.4%N/A0.4 $1.01 4/15/2021788,900 shares $812,567.00 -37.9%N/A0.3 $1.03 3/31/20211,270,000 shares $1.65 million -8.6%N/A0.5 $1.30 3/15/20211,390,000 shares $2.10 million +3.7%N/A0.5 $1.51 2/26/20211,340,000 shares $2.18 million +28.9%N/A0.6 $1.63 2/12/20211,040,000 shares $2.09 million +1,014.7%N/A0.5 $2.01 1/29/202193,300 shares $137,151.00 +148.1%N/A0.1 $1.47 1/15/202137,600 shares $47,752.00 -83.7%N/A0.1 $1.27 12/31/2020230,900 shares $277,080.00 +162.4%N/A0.4 $1.20 12/15/202088,000 shares $116,160.00 -66.3%N/A0.2 $1.32 11/30/2020261,400 shares $334,592.00 +187.9%N/A0.6 $1.28 11/15/202090,800 shares $103,512.00 -73.9%N/A0.2 $1.14 10/30/2020348,100 shares $362,024.00 +56.7%N/A0.8 $1.04 10/15/2020222,100 shares $257,636.00 +87.7%N/A0.4 $1.16 9/30/2020118,300 shares $140,777.00 +20.8%N/A0.2 $1.19 9/15/202097,900 shares $116,501.00 -6.1%N/A0.1 $1.19 8/31/2020104,300 shares $111,601.00 -53.7%N/A0.1 $1.07 8/14/2020225,100 shares $263,367.00 -59.7%N/A0.3 $1.17 7/31/2020558,800 shares $737,616.00 +61.7%N/A0.6 $1.32 7/15/2020345,600 shares $463,104.00 -79.4%N/A0.3 $1.34 6/30/20201,680,000 shares $2.89 million +22.6%N/A1.4 $1.72 6/15/20201,370,000 shares $2.11 million -8.7%N/A1.2 $1.54 5/29/20201,500,000 shares $2.57 million -20.6%N/A1.4 $1.71 5/15/20201,890,000 shares $2.87 million +43.2%N/A1.7 $1.52 4/30/20201,320,000 shares $1.82 million -19.0%7.1%1.3 $1.38 PULM Short Interest - Frequently Asked Questions What is Pulmatrix's current short interest? Short interest is the volume of Pulmatrix shares that have been sold short but have not yet been closed out or covered. As of April 15th, investors have sold 25,200 shares of PULM short. 0.69% of Pulmatrix's shares are currently sold short. Learn More on Pulmatrix's current short interest. What is a good short interest ratio for Pulmatrix? 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. PULM shares currently have a short interest ratio of 1.0. Learn More on Pulmatrix's short interest ratio. Which institutional investors are shorting Pulmatrix? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Pulmatrix: 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 Pulmatrix? 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. 0.69% of Pulmatrix's floating shares are currently sold short. Is Pulmatrix's short interest increasing or decreasing? Pulmatrix saw a drop in short interest during the month of April. As of April 15th, there was short interest totaling 25,200 shares, a drop of 31.7% from the previous total of 36,900 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 Pulmatrix's float size? Pulmatrix currently has issued a total of 3,650,000 shares. Some of Pulmatrix'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. Pulmatrix currently has a public float of 3,650,000 shares. How does Pulmatrix's short interest compare to its competitors? 0.69% of Pulmatrix's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Pulmatrix: Janone Inc. (2.53%), MacroGenics, Inc. (9.21%), Galectin Therapeutics Inc. (19.17%), Anixa Biosciences, Inc. (1.21%), TScan Therapeutics, Inc. (4.21%), Kyverna Therapeutics, Inc. (13.50%), Black Diamond Therapeutics, Inc. (18.69%), Entera Bio Ltd. (0.23%), HilleVax, Inc. (6.68%), Vigil Neuroscience, Inc. (1.87%), 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 Pulmatrix stock? Short selling PULM is an investing strategy that aims to generate trading profit from Pulmatrix as its price is falling. PULM shares are trading down $0.06 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 Pulmatrix? A short squeeze for Pulmatrix 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 PULM, which in turn drives the price of the stock up even further. How often is Pulmatrix'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 PULM, twice per month. The most recent reporting period available is April, 15 2025. More Short Interest Resources from MarketBeat Related Companies ALTS Short Interest Data MGNX Short Interest Data GALT Short Interest Data ANIX Short Interest Data TCRX Short Interest Data KYTX Short Interest Data BDTX Short Interest Data ENTX Short Interest Data HLVX Short Interest Data VIGL 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:PULM) was last updated on 4/26/2025 by MarketBeat.com Staff From Our PartnersTrump Orders 'National Digital Asset Stockpile'‘Digital Asset Reserve’ for THIS Coin??? Get all the details before this story gains even more tractionCrypto 101 Media | SponsoredTrump’s tariffs just split the AI market in twoTrump’s tariff just split the AI market – among others – in two. 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