Pulse Biosciences (PLSE) Short Interest Ratio & Short Volume $14.72 -0.62 (-4.04%) Closing price 08/7/2025 04:00 PM EasternExtended Trading$14.79 +0.07 (+0.47%) As of 04:15 AM 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 ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Pulse Biosciences Short Interest DataPulse Biosciences (PLSE) has a short interest of 2.44 million shares, representing 19.37% of the float (the number of shares available for trading by the public). This marks a -2.40% decrease in short interest from the previous month. The short interest ratio (days to cover) is 14.2, indicating that it would take 14.2 days of the average trading volume of 139,499 shares to cover all short positions.Current Short Interest2,440,000 sharesPrevious Short Interest2,500,000 sharesChange Vs. Previous Month-2.40%Dollar Volume Sold Short$37.14 millionShort Interest Ratio14.2 Days to CoverLast Record DateJuly 15, 2025Outstanding Shares67,270,000 sharesFloat Size12,600,000 sharesShort Percent of Float19.37%Today's Trading Volume169,924 sharesAverage Trading Volume139,499 sharesToday's Volume Vs. Average122% Short Selling Pulse Biosciences? Sign up to receive the latest short interest report for Pulse Biosciences and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartPLSE Short Interest Over TimePLSE Days to Cover Over TimePLSE Percentage of Float Shorted Over Time Pulse Biosciences Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 7/15/20252,440,000 shares $37.14 million -2.4%19.4%14.2 $15.22 6/30/20252,500,000 shares $37.73 million +2.0%19.8%14.3 $15.09 6/15/20252,450,000 shares $38.64 million +2.1%19.4%12.9 $15.77 5/31/20252,400,000 shares $41.90 million -2.4%19.1%13 $17.46 5/15/20252,460,000 shares $40.57 million +3.4%19.6%13.3 $16.49 4/30/20252,380,000 shares $40.51 million +1.3%19.0%12.8 $17.02 4/15/20252,350,000 shares $40.02 million -4.5%18.7%12.6 $17.03 3/31/20252,460,000 shares $39.58 million +6.0%19.6%13.6 $16.09 3/15/20252,320,000 shares $39.23 million +2.7%20.2%14.6 $16.91 2/28/20252,260,000 shares $41.38 million +2.7%19.7%14.1 $18.31 Get the Latest News and Ratings for PLSE and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Pulse Biosciences and its competitors with MarketBeat's FREE daily newsletter. 2/15/20252,200,000 shares $46.18 million +3.8%19.2%13.8 $20.99 1/31/20252,120,000 shares $44.37 million -0.5%18.4%12.1 $20.93 1/15/20252,130,000 shares $37.89 million +1.4%18.4%12.7 $17.79 12/31/20242,100,000 shares $36.56 million -3.2%18.2%12.8 $17.41 12/15/20242,170,000 shares $38.30 million +2.4%18.8%13.3 $17.65 11/30/20242,120,000 shares $45.37 million +1.9%12.4%12.9 $21.40 11/15/20242,080,000 shares $34.61 million -18.1%12.2%12.2 $16.64 10/31/20242,540,000 shares $44.27 million -7.6%14.9%15.9 $17.43 10/15/20242,750,000 shares $45.07 million -0.7%16.2%17.2 $16.39 9/30/20242,770,000 shares $48.59 million +0.7%16.3%14.8 $17.54 9/15/20242,750,000 shares $50.90 million -1.8%16.1%11.8 $18.51 8/31/20242,800,000 shares $52.19 million -4.8%16.5%12.2 $18.64 8/15/20242,940,000 shares $56.12 million +1.0%17.3%11.3 $19.09 7/31/20242,910,000 shares $43.53 million +3.9%23.9%10.8 $14.96 7/15/20242,800,000 shares $54.63 million +12.0%23.0%10.5 $19.51 6/30/20242,500,000 shares $27.98 million +2.9%15.3%9.9 $11.19 6/15/20242,430,000 shares $29.23 million -14.4%14.9%11 $12.03 5/31/20242,840,000 shares $32.80 million -3.1%17.4%13.2 $11.55 5/15/20242,930,000 shares $21.27 million +3.9%17.9%15.8 $7.26 4/30/20242,820,000 shares $20.78 million -3.1%17.4%16.9 $7.37 4/15/20242,910,000 shares $22.76 million +10.7%18.0%17 $7.82 3/31/20242,630,000 shares $22.91 million +5.2%16.2%14.6 $8.71 3/15/20242,500,000 shares $25.78 million -2.7%15.5%13 $10.31 2/29/20242,570,000 shares $25.39 million -1.2%15.9%10.3 $9.88 2/15/20242,600,000 shares $23.92 million -1.1%16.1%9.1 $9.20 1/31/20242,630,000 shares $23.35 million +6.5%16.3%9 $8.88 1/15/20242,470,000 shares $19.83 million +5.1%15.3%8.5 $8.03 12/31/20232,350,000 shares $28.76 million -8.2%14.5%8.7 $12.24 12/15/20232,560,000 shares $25.19 million +7.1%N/A10.2 $9.84 11/30/20232,390,000 shares $21.58 million +2.6%N/A12.2 $9.03Protect Your Bank Account with THESE 4 Simple Steps (Ad)Starting as soon as a few months from now, the United States government will make a sweeping change to bank accounts nationwide. It will give them unprecedented powers to control your bank account.Learn these 4 simple steps and protect your savings before it’s too late. 11/15/20232,330,000 shares $14.87 million +8.4%N/A12.8 $6.38 10/31/20232,150,000 shares $9.72 million +3.9%N/A11.5 $4.52 10/15/20232,070,000 shares $8.40 million -2.8%N/A11.2 $4.06 9/30/20232,130,000 shares $8.58 million +4.9%N/A11.6 $4.03 9/15/20232,030,000 shares $9.50 million +8.0%N/A11.5 $4.68 8/31/20231,880,000 shares $8.85 million +9.9%N/A9.2 $4.71 8/15/20231,710,000 shares $13.54 million +0.6%N/A10.8 $7.92 7/31/20231,700,000 shares $13.43 million -5.0%N/A12.3 $7.90 7/15/20231,790,000 shares $12.53 million -4.3%N/A12.7 $7.00 6/30/20231,870,000 shares $13.45 million +17.6%N/A12.3 $7.19 6/15/20231,590,000 shares $10.35 million +3.3%N/A10 $6.51 5/31/20231,540,000 shares $9.55 million -8.3%25.8%13.6 $6.20 5/15/20231,680,000 shares $13.46 million -6.2%28.1%16.3 $8.01 4/30/20231,790,000 shares $11.53 million -5.3%11.4%20.4 $6.44 4/15/20231,890,000 shares $10.92 million -4.1%12.0%27 $5.78 3/31/20231,970,000 shares $6.62 million -5.7%12.5%30.2 $3.36 3/15/20232,090,000 shares $6.60 million +4.5%13.4%38 $3.16 2/28/20232,000,000 shares $5.46 million -5.7%12.8%26.5 $2.73 2/15/20232,120,000 shares $6.21 million -3.2%13.6%26.9 $2.93 1/31/20232,190,000 shares $6.85 million -1.8%14.0%26.2 $3.13 1/15/20232,230,000 shares $8.65 million +4.2%14.3%25.5 $3.88 12/30/20222,140,000 shares $5.93 million -5.3%13.7%23.8 $2.77 12/15/20222,260,000 shares $5.70 million -6.6%14.5%10 $2.52 11/30/20222,420,000 shares $4.84 million -1.2%15.6%10.5 $2.00 11/15/20222,450,000 shares $5.07 million +7.9%15.8%11.3 $2.07 10/31/20222,270,000 shares $4.79 million +1.3%14.7%10.1 $2.11 10/15/20222,240,000 shares $5.06 million +9.8%14.5%9.8 $2.26 9/30/20222,040,000 shares $4.69 million +6.3%13.2%8.9 $2.30 9/15/20221,920,000 shares $2.86 million +1.1%12.4%10.4 $1.49 8/31/20221,900,000 shares $2.41 million +2.7%12.3%15.8 $1.27 8/15/20221,850,000 shares $3.27 million +1.1%11.9%14.1 $1.77 7/31/20221,830,000 shares $2.85 million -3.7%11.8%11.6 $1.56 7/15/20221,900,000 shares $3.80 million No Change13.3%10.1 $2.00 6/30/20221,900,000 shares $2.91 million -21.2%21.8%7.9 $1.53 6/15/20222,410,000 shares $4.94 million -15.4%34.5%9.5 $2.05 5/31/20222,850,000 shares $6.36 million -0.7%22.0%12.1 $2.23 5/15/20222,870,000 shares $4.88 million +2.9%22.2%11.4 $1.70 4/30/20222,790,000 shares $6.98 million +12.5%21.8%10.9 $2.50 4/15/20222,480,000 shares $8.61 million -4.3%19.3%9.7 $3.47 3/31/20222,590,000 shares $12.59 million +2.0%20.3%13.6 $4.86 3/15/20222,540,000 shares $11.84 million +7.2%19.9%15.4 $4.66 2/28/20222,370,000 shares $12.04 million +13.4%18.6%15.5 $5.08 2/15/20222,090,000 shares $13.73 million +13.0%16.4%15.2 $6.57 1/31/20221,850,000 shares $22.50 million +7.6%14.5%17.2 $12.16 1/15/20221,720,000 shares $21.38 million +4.9%13.5%24.4 $12.43 12/31/20211,640,000 shares $24.29 million +4.5%12.9%30.3 $14.81 12/15/20211,570,000 shares $26.71 million +6.1%12.3%31.6 $17.01 11/30/20211,480,000 shares $30.04 million +1.4%11.6%30.2 $20.30 11/15/20211,460,000 shares $31.65 million No Change11.5%31.1 $21.68 10/29/20211,460,000 shares $30.79 million +1.4%11.5%28.1 $21.09Protect Your Bank Account with THESE 4 Simple Steps (Ad)Starting as soon as a few months from now, the United States government will make a sweeping change to bank accounts nationwide. It will give them unprecedented powers to control your bank account.Learn these 4 simple steps and protect your savings before it’s too late. 10/15/20211,440,000 shares $31.18 million -2.0%11.3%25.6 $21.65 9/30/20211,470,000 shares $31.75 million -6.4%11.5%23.3 $21.60 9/15/20211,570,000 shares $32.26 million -1.9%12.3%14.2 $20.55 8/31/20211,600,000 shares $41.44 million +0.6%12.6%15 $25.90 8/13/20211,590,000 shares $35.66 million +3.9%14.8%15.5 $22.43 7/30/20211,530,000 shares $31.37 million +7.0%16.0%14.4 $20.50 7/15/20211,430,000 shares $25.93 million +7.5%14.9%13.6 $18.13 6/30/20211,330,000 shares $21.81 million -5.0%13.9%12.6 $16.40 6/15/20211,400,000 shares $24.15 million +3.7%11.1%20.8 $17.25 5/28/20211,350,000 shares $24.35 million -2.9%10.7%17.2 $18.04 5/14/20211,390,000 shares $23.84 million +12.1%11.0%15.2 $17.15 4/30/20211,240,000 shares $25.11 million +1.6%9.9%11.2 $20.25 4/15/20211,220,000 shares $26.24 million -6.2%9.8%9.3 $21.51 3/31/20211,300,000 shares $29.51 million +0.8%10.3%8.9 $22.70 3/15/20211,290,000 shares $39.82 million +6.6%10.2%8.3 $30.87 2/26/20211,210,000 shares $35.08 million +8.0%9.6%8 $28.99 2/12/20211,120,000 shares $40.36 million -10.4%9.5%7.7 $36.04 1/29/20211,250,000 shares $43.04 million -22.4%9.9%9.3 $34.43 1/15/20211,610,000 shares $40.02 million -16.6%12.7%14.1 $24.86 12/31/20201,930,000 shares $47.29 million -9.8%15.2%20.9 $24.50 12/15/20202,140,000 shares $40.23 million -7.8%16.4%22.2 $18.80 11/30/20202,320,000 shares $34.10 million -0.4%17.8%24 $14.70 11/15/20202,330,000 shares $34.62 million No Change18.0%24.2 $14.86 10/30/20202,330,000 shares $28.10 million +0.9%18.0%24.8 $12.06 10/15/20202,310,000 shares $35.14 million -2.1%17.9%25.2 $15.21 9/30/20202,360,000 shares $27.82 million -2.1%18.3%25.4 $11.79 9/15/20202,410,000 shares $28.12 million -0.8%18.7%29.4 $11.67 8/31/20202,430,000 shares $24.03 million -5.5%18.8%26.9 $9.89 8/14/20202,570,000 shares $26.99 million -0.8%20.0%27.8 $10.50 PLSE Short Interest - Frequently Asked Questions What is Pulse Biosciences' current short interest? Short interest is the volume of Pulse Biosciences shares that have been sold short but have not yet been covered or closed out. As of July 15th, investors have sold 2,440,000 shares of PLSE short. 19.37% of Pulse Biosciences' shares are currently sold short. Learn More on Pulse Biosciences' current short interest. What is a good short interest ratio for Pulse Biosciences? 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. PLSE shares currently have a short interest ratio of 14.0. Learn More on Pulse Biosciences's short interest ratio. Which institutional investors are shorting Pulse Biosciences? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Pulse Biosciences: 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 Pulse Biosciences? 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. 19.37% of Pulse Biosciences' floating shares are currently sold short. Is Pulse Biosciences' short interest increasing or decreasing? Pulse Biosciences saw a decrease in short interest in the month of July. As of July 15th, there was short interest totaling 2,440,000 shares, a decrease of 2.4% from the previous total of 2,500,000 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. What is Pulse Biosciences' float size? Pulse Biosciences currently has issued a total of 67,270,000 shares. Some of Pulse Biosciences' 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. Pulse Biosciences currently has a public float of 12,600,000 shares. How does Pulse Biosciences' short interest compare to its competitors? 19.37% of Pulse Biosciences' shares are currently sold short. Here is how the short interest of companies in the industry of "medical equipment" compare to Pulse Biosciences: Inspire Medical Systems, Inc. (11.13%), Envista Holdings Corporation (6.61%), PROCEPT BioRobotics Corporation (12.97%), Warby Parker Inc. (9.27%), LivaNova PLC (3.98%), National Vision Holdings, Inc. (9.56%), LeMaitre Vascular, Inc. (6.11%), CONMED Corporation (6.82%), Liquidia Technologies, Inc. (26.20%), Enovis Corporation (13.29%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Coinbase Global, Inc. ($5.11 billion), Charter Communications, Inc. ($4.76 billion), Reddit Inc. ($2.84 billion), SoFi Technologies, Inc. ($2.79 billion), Seagate Technology Holdings PLC ($2.79 billion), Live Nation Entertainment, Inc. ($2.67 billion), Rocket Lab Corporation ($2.49 billion), AST SpaceMobile, Inc. ($2.12 billion), Moderna, Inc. ($2.09 billion), and Omnicom Group Inc. ($2.04 billion). View all of the most shorted stocks. What does it mean to sell short Pulse Biosciences stock? Short selling PLSE is an investing strategy that aims to generate trading profit from Pulse Biosciences as its price is falling. PLSE shares are trading down $0.62 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 Pulse Biosciences? A short squeeze for Pulse Biosciences 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 PLSE, which in turn drives the price of the stock up even further. How often is Pulse Biosciences' 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 PLSE, twice per month. The most recent reporting period available is July, 15 2025. 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