This company has been marked as potentially delisted and may not be actively trading. OptiNose (OPTN) Short Interest Ratio & Short Volume Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsEarningsFDA EventsHeadlinesInsider TradesOwnershipShort InterestSustainabilityTrendsBuy This Stock OptiNose Short Interest DataOptiNose (OPTN) has a short interest of 132,700 shares, representing 1.68% of the float (the number of shares available for trading by the public). This marks a -6.68% decrease in short interest from the previous month. The short interest ratio (days to cover) is 1.5, indicating that it would take 1.5 days of the average trading volume of 63,682 shares to cover all short positions.Current Short Interest132,700 sharesPrevious Short Interest142,200 sharesChange Vs. Previous Month-6.68%Dollar Volume Sold Short$1.24 millionShort Interest Ratio1.5 Days to CoverLast Record DateApril 30, 2025Outstanding Shares10,127,000 sharesFloat Size7,910,000 sharesShort Percent of Float1.68%Today's Trading Volume0 sharesAverage Trading Volume63,682 sharesToday's Volume Vs. Average0% Short Selling OptiNose? Sign up to receive the latest short interest report for OptiNose and its competitors with MarketBeat's FREE newsletter. Email Address Get Report View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartOPTN Short Interest Over TimeOPTN Days to Cover Over TimeOPTN Percentage of Float Shorted Over Time OptiNose Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 4/30/2025132,700 shares $1.24 million -6.7%1.7%1.5 $9.32 4/15/2025142,200 shares $1.31 million -25.8%1.8%1.5 $9.19 3/31/2025191,700 shares $1.76 million -29.5%2.4%2.1 $9.17 3/15/2025271,800 shares $1.46 million +11.8%3.4%3.5 $5.36 2/28/2025243,100 shares $1.41 million +0.9%3.1%6 $5.81 2/15/2025241,000 shares $1.45 million -2.7%3.0%5 $6.00 1/31/2025247,800 shares $1.47 million +16.2%3.1%3.8 $5.92 1/15/2025213,300 shares $1.28 million -30.0%2.7%3.3 $6.00 12/31/2024304,600 shares $2.03 million -90.5%3.8%5.5 $6.68 12/15/20243,190,000 shares $1.50 million -56.7%N/A4.2 $0.47 Get the Latest News and Ratings for OPTN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for OptiNose and its competitors with MarketBeat's FREE daily newsletter. 11/30/20247,360,000 shares $3.68 million -18.9%N/A9.7 $0.50 11/15/20249,070,000 shares $3.95 million +5.8%N/A13.8 $0.44 10/31/20248,570,000 shares $5.91 million -1.4%N/A25.5 $0.69 10/15/20248,690,000 shares $6.11 million +3.1%N/A20.8 $0.70 9/30/20248,430,000 shares $5.65 million +21.1%N/A16.2 $0.67 9/15/20246,960,000 shares $6.30 million -0.7%N/A9.6 $0.91 8/31/20247,010,000 shares $7.29 million +0.7%N/A9.7 $1.04 8/15/20246,960,000 shares $6.40 million +8.1%N/A9.4 $0.92 7/31/20246,440,000 shares $6.76 million +13.0%N/A7.8 $1.05 7/15/20245,700,000 shares $7.24 million -26.2%N/A4.5 $1.27 6/30/20247,720,000 shares $8.03 million +35.4%N/A6.3 $1.04 6/15/20245,700,000 shares $6.58 million -19.4%N/A5.3 $1.16 5/31/20247,070,000 shares $7.64 million -3.0%N/A6 $1.08 5/15/20247,290,000 shares $8.64 million +23.1%N/A6.1 $1.19 4/30/20245,920,000 shares $4.86 million +84.4%N/A5.2 $0.82 4/15/20243,210,000 shares $3.82 million +3.2%N/A5.3 $1.19 3/31/20243,110,000 shares $4.54 million -2.8%N/A5.7 $1.46 3/15/20243,200,000 shares $5.98 million -0.3%N/A5.9 $1.87 2/29/20243,210,000 shares $5.71 million -10.8%N/A8.5 $1.78 2/15/20243,600,000 shares $4.86 million +5.9%N/A10.1 $1.35 1/31/20243,400,000 shares $4.28 million -2.9%N/A10.8 $1.26 1/15/20243,500,000 shares $4.45 million -4.6%N/A11.4 $1.27 12/31/20233,670,000 shares $4.73 million -1.1%N/A11.5 $1.29 12/15/20233,710,000 shares $4.30 million +1.1%N/A11.9 $1.16 11/30/20233,670,000 shares $4.59 million -1.9%N/A11.6 $1.25 11/15/20233,740,000 shares $4.64 million -1.8%N/A14 $1.24 10/31/20233,810,000 shares $4.31 million +1.1%N/A12.6 $1.13 10/15/20233,770,000 shares $4.67 million -2.3%N/A12 $1.24 9/30/20233,860,000 shares $4.75 million -15.2%N/A10.8 $1.23 9/15/20234,550,000 shares $6.23 million +23.3%N/A11.4 $1.37REVEALED FREE: Our top 3 stocks to own in 2025 and beyond (Ad)Every time Weiss Ratings flashed green like this, the average gain on each and every stock has been 303% (including the losers!). Click here for the names of our three top stocks to own this year (no purchase necessary). 8/31/20233,690,000 shares $4.39 million -3.2%N/A6.3 $1.19 8/15/20233,810,000 shares $4.72 million No ChangeN/A5.7 $1.24 7/31/20233,810,000 shares $4.59 million -16.6%N/A5.6 $1.21 7/15/20234,570,000 shares $4.34 million +24.9%N/A7.1 $0.95 6/30/20233,660,000 shares $4.50 million +53.8%N/A6.3 $1.23 6/15/20232,380,000 shares $2.69 million -0.4%N/A4.5 $1.13 5/31/20232,390,000 shares $2.99 million -0.8%N/A7.8 $1.25 5/15/20232,410,000 shares $4.70 million -1.2%N/A10.3 $1.95 4/30/20232,440,000 shares $4.17 million -3.6%N/A16.2 $1.71 4/15/20232,530,000 shares $4.81 million -2.3%N/A16 $1.90 3/31/20232,590,000 shares $5.00 million +4.9%N/A16.6 $1.93 3/15/20232,470,000 shares $4.47 million -2.8%N/A16.3 $1.81 2/28/20232,540,000 shares $4.57 million +0.8%4.9%12.9 $1.80 2/15/20232,520,000 shares $4.33 million -4.2%4.9%12.2 $1.72 1/31/20232,630,000 shares $4.71 million -4.7%N/A11.4 $1.79 1/15/20232,760,000 shares $4.97 million +6.2%N/A13.2 $1.80 12/30/20222,600,000 shares $4.81 million -5.8%N/A12.5 $1.85 12/15/20222,760,000 shares $4.83 million +16.0%N/A13.4 $1.75 11/30/20222,380,000 shares $4.21 million -4.8%N/A11.9 $1.77 11/15/20222,500,000 shares $4.63 million -5.7%N/A17.1 $1.85 10/31/20222,650,000 shares $9.25 million +1.9%5.3%23.2 $3.49 10/15/20222,600,000 shares $8.63 million +2.0%5.2%19.8 $3.32 9/30/20222,550,000 shares $9.33 million +23.2%5.1%19.2 $3.66 9/15/20222,070,000 shares $7.35 million -0.5%4.1%13.5 $3.55 8/31/20222,080,000 shares $7.59 million +1.0%4.2%8.6 $3.65 8/15/20222,060,000 shares $8.05 million -1.0%4.1%8.5 $3.91 7/31/20222,080,000 shares $7.53 million No Change4.2%8.7 $3.62 7/15/20222,080,000 shares $7.47 million -3.3%4.7%9 $3.59 6/30/20222,150,000 shares $7.87 million +2.4%4.8%9.1 $3.66 6/15/20222,100,000 shares $7.31 million +6.1%4.7%9.1 $3.48 5/31/20221,980,000 shares $4.08 million -1.0%4.5%9 $2.06 5/15/20222,000,000 shares $3.62 million -19.0%4.5%7.4 $1.81 4/30/20222,470,000 shares $5.98 million +0.4%5.6%8.3 $2.42 4/15/20222,460,000 shares $6.25 million -3.5%5.5%7.5 $2.54 3/31/20222,550,000 shares $6.30 million +16.4%5.9%6.8 $2.47 3/15/20222,190,000 shares $4.60 million +21.0%5.1%5.5 $2.10 2/28/20221,810,000 shares $5.30 million -14.2%4.4%4.9 $2.93 2/15/20222,110,000 shares $5.68 million +1.9%5.1%5.7 $2.69 1/31/20222,070,000 shares $4.76 million -6.8%5.0%4 $2.30 1/15/20222,220,000 shares $4.64 million -4.3%5.0%4.6 $2.09 12/31/20212,320,000 shares $3.76 million -7.2%5.2%5.3 $1.62 12/15/20212,500,000 shares $4.18 million -1.6%5.6%6 $1.67 11/30/20212,540,000 shares $4.04 million -10.9%8.7%6.6 $1.59 11/15/20212,850,000 shares $6.81 million +0.4%6.0%8 $2.39 10/29/20212,840,000 shares $7.53 million +3.7%8.8%13.4 $2.65 10/15/20212,740,000 shares $8.22 million -10.2%8.5%11.5 $3.00 9/30/20213,050,000 shares $9.15 million -3.2%9.5%10.8 $3.00 9/15/20213,150,000 shares $8.79 million +5.7%9.8%8.1 $2.79 8/31/20212,980,000 shares $8.67 million -24.8%9.1%7.5 $2.91 8/13/20213,960,000 shares $10.41 million -7.5%12.1%10.1 $2.63REVEALED FREE: Our top 3 stocks to own in 2025 and beyond (Ad)Every time Weiss Ratings flashed green like this, the average gain on each and every stock has been 303% (including the losers!). Click here for the names of our three top stocks to own this year (no purchase necessary). 7/30/20214,280,000 shares $12.16 million +2.6%13.1%11.4 $2.84 7/15/20214,170,000 shares $12.51 million +2.2%13.6%11 $3.00 6/30/20214,080,000 shares $12.69 million -19.8%13.3%11.3 $3.11 6/15/20215,090,000 shares $19.09 million -2.3%16.6%17.9 $3.75 5/28/20215,210,000 shares $16.62 million +3.2%17.0%17.2 $3.19 5/14/20215,050,000 shares $15.76 million +5.4%16.4%13.5 $3.12 4/30/20214,790,000 shares $17.82 million +7.4%15.6%11.2 $3.72 4/15/20214,460,000 shares $15.92 million +4.2%15.1%10 $3.57 3/31/20214,280,000 shares $15.02 million -0.5%14.5%9.4 $3.51 3/15/20214,300,000 shares $16.51 million -10.0%14.8%8.5 $3.84 2/26/20214,780,000 shares $19.22 million +1.3%16.2%9.5 $4.02 2/12/20214,720,000 shares $21.95 million +33.3%16.3%9.9 $4.65 1/29/20213,540,000 shares $14.37 million -34.6%12.2%7.6 $4.06 1/15/20215,410,000 shares $22.94 million +1.1%18.0%11.8 $4.24 12/31/20205,350,000 shares $22.36 million -23.6%17.8%12.8 $4.18 12/15/20207,000,000 shares $30.38 million +2.8%23.2%16.7 $4.34 11/30/20206,810,000 shares $29.08 million +23.4%22.5%17.9 $4.27 11/15/20205,520,000 shares $21.97 million -19.1%18.2%14.6 $3.98 10/30/20206,820,000 shares $22.85 million +1.8%22.4%16.6 $3.35 10/15/20206,700,000 shares $25.73 million -3.3%22.1%15.9 $3.84 9/30/20206,930,000 shares $27.03 million -7.7%22.8%14.3 $3.90 9/15/20207,510,000 shares $34.02 million -1.7%24.7%10.7 $4.53 8/31/20207,640,000 shares $34.76 million +15.1%25.1%11.3 $4.55 OPTN Short Interest - Frequently Asked Questions What is OptiNose's current short interest? Short interest is the volume of OptiNose shares that have been sold short but have not yet been closed out or covered. As of April 30th, investors have sold 132,700 shares of OPTN short. 1.68% of OptiNose's shares are currently sold short. Learn More on OptiNose's current short interest. What is a good short interest ratio for OptiNose? 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. OPTN shares currently have a short interest ratio of 2.0. Learn More on OptiNose's short interest ratio. What is a good short interest percentage for OptiNose? 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. 1.68% of OptiNose's floating shares are currently sold short. Is OptiNose's short interest increasing or decreasing? OptiNose saw a decline in short interest during the month of April. As of April 30th, there was short interest totaling 132,700 shares, a decline of 6.7% from the previous total of 142,200 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 OptiNose's float size? OptiNose currently has issued a total of 10,127,000 shares. Some of OptiNose'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. OptiNose currently has a public float of 7,910,000 shares. How does OptiNose's short interest compare to its competitors? 1.68% of OptiNose's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to OptiNose: Y-mAbs Therapeutics, Inc. (6.58%), Astria Therapeutics, Inc. (6.41%), Vigil Neuroscience, Inc. (1.40%), Nanobiotix S.A. Sponsored ADR (0.04%), Olema Pharmaceuticals, Inc. (13.35%), Fulcrum Therapeutics, Inc. (9.98%), Abeona Therapeutics Inc. (18.51%), Capricor Therapeutics, Inc. (27.18%), ADC Therapeutics SA (6.05%), Benitec Biopharma Limited (5.52%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Spotify Technology ($4.67 billion), Charter Communications, Inc. ($4.58 billion), Capital One Financial Corporation ($4.47 billion), The Kroger Co. ($2.56 billion), Reddit Inc. ($2.23 billion), Rivian Automotive, Inc. ($2.16 billion), Live Nation Entertainment, Inc. ($1.90 billion), SoFi Technologies, Inc. ($1.85 billion), Zscaler, Inc. ($1.75 billion), and Omnicom Group Inc. ($1.75 billion). View all of the most shorted stocks. What does it mean to sell short OptiNose stock? Short selling OPTN is an investing strategy that aims to generate trading profit from OptiNose as its price is falling. 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 OptiNose? A short squeeze for OptiNose 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 OPTN, which in turn drives the price of the stock up even further. How often is OptiNose'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 OPTN, twice per month. The most recent reporting period available is April, 30 2025. More Short Interest Resources from MarketBeat Related Companies Y-mAbs Therapeutics Short Interest Astria Therapeutics Short Interest Vigil Neuroscience Short Interest Nanobiotix Short Interest Olema Pharmaceuticals Short Interest Fulcrum Therapeutics Short Interest Abeona Therapeutics Short Interest Capricor Therapeutics Short Interest ADC Therapeutics Short Interest Benitec Biopharma 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:OPTN) was last updated on 8/31/2025 by MarketBeat.com Staff From Our PartnersINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredBONUS GUIDE - Ben Stein Prepares For the Next Financial CrisisWith inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. 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