NovaBay Pharmaceuticals (NBY) Short Interest Ratio & Short Volume $1.78 +0.13 (+7.88%) Closing price 08/29/2025 04:10 PM EasternExtended Trading$1.76 -0.02 (-0.84%) As of 08/29/2025 07:59 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 AnalysisChartDividendInsider TradesSEC FilingsShort InterestBuy This Stock NovaBay Pharmaceuticals Short Interest DataNovaBay Pharmaceuticals (NBY) has a short interest of 34,200 shares, representing 0.59% of the float (the number of shares available for trading by the public). This marks a -10.70% 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 18.29 million shares to cover all short positions.Current Short Interest34,200 sharesPrevious Short Interest38,300 sharesChange Vs. Previous Month-10.70%Dollar Volume Sold Short$19.87 thousandShort Interest Ratio0.9 Days to CoverLast Record DateJuly 31, 2025Outstanding Shares5,820,000 sharesShort Percent of Float0.59%Today's Trading Volume8,334,089 sharesAverage Trading Volume18,287,706 sharesToday's Volume Vs. Average46% Short Selling NovaBay Pharmaceuticals? Sign up to receive the latest short interest report for NovaBay Pharmaceuticals 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. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartNBY Short Interest Over TimeNBY Days to Cover Over TimeNBY Percentage of Float Shorted Over Time NovaBay 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 7/31/202534,200 shares $19.87 thousand -10.7%0.6%0.9 $0.58 7/15/202538,300 shares $25.66 thousand -7.7%N/A1 $0.67 6/30/202541,500 shares $24.07 thousand +4.5%0.7%1 $0.58 6/15/202539,700 shares $23.82 thousand -28.0%0.7%0.8 $0.60 5/31/202555,100 shares $30.17 thousand +28.7%1.3%1.1 $0.55 5/15/202542,800 shares $24.82 thousand -55.6%1.0%0.8 $0.58 4/30/202596,300 shares $55.85 thousand -30.1%N/A1.6 $0.58 4/15/2025137,800 shares $81.30 thousand +321.4%3.3%1.6 $0.59 3/31/202532,700 shares $19.13 thousand -70.8%0.8%0.2 $0.59 3/15/2025112,100 shares $70.63 thousand +26.0%2.7%0.5 $0.63 Get the Latest News and Ratings for NBY and Related StocksEnter your email address below to receive the latest news and analysts' ratings for NovaBay Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 2/28/202589,000 shares $0.00 -19.2%2.1%0.4 $0.00 2/15/2025110,200 shares $0.00 +35.1%2.6%0.5 $0.00 1/31/202581,600 shares $0.00 -77.9%N/A0.3 $0.00 1/15/2025369,700 shares $0.00 +487.8%N/A0.7 $0.00 12/31/202462,900 shares $0.00 +63.8%N/A0.1 $0.00 12/15/202438,400 shares $0.00 -47.5%N/A0.1 $0.00 11/30/202473,200 shares $0.00 -60.9%N/A0 $0.00 11/15/2024187,000 shares $0.00 -75.5%N/A0.1 $0.00 10/31/2024764,300 shares $0.00 +4,169.8%N/A0.3 $0.00 10/15/202417,900 shares $0.00 -96.0%N/A0 $0.00 9/30/2024451,700 shares $0.00 +256.5%N/A0.2 $0.00 9/15/2024126,700 shares $0.00 -6.8%N/A0 $0.00 8/31/2024135,900 shares $0.00 -29.3%N/A0.5 $0.00 8/15/2024192,200 shares $0.00 +495.1%N/A0.6 $0.00 7/31/202432,300 shares $0.00 -66.0%N/A0.1 $0.00 7/15/202494,900 shares $0.00 +27.0%N/A0.3 $0.00 6/30/202474,700 shares $0.00 +54.0%N/A0.2 $0.00 6/15/202448,500 shares $0.00 -92.5%N/A0.2 $0.00 5/31/2024647,600 shares $0.00 +2,023.3%84.7%2.3 $0.00 5/15/202430,500 shares $0.00 -77.7%0.1%0 $0.00 4/30/2024137,000 shares $0.00 -34.2%0.4%0.1 $0.00 4/15/2024208,100 shares $0.00 -71.1%0.6%0.1 $0.00 3/31/2024718,800 shares $0.00 +519.1%2.5%0.2 $0.00 3/15/2024116,100 shares $0.00 -57.3%0.4%0 $0.00 2/29/2024271,700 shares $0.00 -10.2%4.3%0.1 $0.00 2/15/2024302,400 shares $0.00 -47.6%4.8%0.1 $0.00 1/31/2024576,600 shares $0.00 +33.4%9.1%0.2 $0.00 1/15/2024432,400 shares $0.00 +1,226.4%6.8%0.6 $0.00 12/31/202332,600 shares $0.00 +136.2%0.5%0.1 $0.00 12/15/202313,800 shares $0.00 -58.7%0.2%0.1 $0.00$100 Trillion “AI Metal” Found in American Ghost Town (Ad)Jeff Brown recently traveled to a ghost town in the middle of an American desert… To investigate what could be the biggest technology story of this decade. In short, he believes what he's holding in his hand is the key to the $100 trillion AI boom… And only one company here in the U.S. can mine this obscure metal.Click here to get the details on this virtual monopoly. 11/30/202333,400 shares $0.00 -40.8%0.5%0 $0.00 11/15/202356,400 shares $0.00 -39.1%0.9%0.1 $0.00 10/31/202392,600 shares $0.00 +21.5%2.3%0.1 $0.00 10/15/202376,200 shares $0.00 No Change1.9%0.1 $0.00 9/30/202376,200 shares $0.00 -73.0%1.9%0.1 $0.00 9/15/2023281,700 shares $0.00 +54.6%6.9%0.2 $0.00 8/31/2023182,200 shares $0.00 +0.9%4.5%0.2 $0.00 8/15/2023180,600 shares $0.00 +10.9%4.5%0.8 $0.00 7/31/2023162,900 shares $114.08 thousand -43.4%4.0%0.3 $0.70 7/15/2023287,600 shares $0.00 -6.0%7.1%0.5 $0.00 6/30/2023305,900 shares $230.10 thousand +9.8%7.6%0.6 $0.75 6/15/2023278,600 shares $186.08 thousand +22.1%7.0%0.5 $0.67 5/31/2023228,100 shares $148.24 thousand +53.6%9.1%0.5 $0.65 5/15/2023148,500 shares $0.00 -6.1%6.3%0.4 $0.00 4/30/2023158,100 shares $0.00 +81.7%8.3%1.7 $0.00 4/15/202387,000 shares $156.60 thousand -2.9%5.0%1 $1.80 3/31/202389,600 shares $0.00 +3.9%5.2%3.3 $0.00 3/15/202386,200 shares $0.00 -10.2%5.0%1.9 $0.00 2/28/202396,000 shares $0.00 -3.1%5.5%1.9 $0.00 2/15/202399,100 shares $0.00 +0.1%5.7%1.7 $0.00 1/31/202399,000 shares $245.17 thousand +3.0%5.7%1.4 $2.48 1/15/202396,100 shares $0.00 +115.5%5.6%1.4 $0.00 12/30/202244,600 shares $86.97 thousand +8.0%2.8%0.6 $1.95 12/15/202241,300 shares $0.00 +7.8%N/A0.7 $0.00 11/30/202238,300 shares $0.00 +2.7%N/A0.6 $0.00 11/15/202237,300 shares $0.00 -96.6%N/A0.7 $0.00 10/31/20221,100,000 shares $0.00 -19.7%N/A0.8 $0.00 10/15/20221,370,000 shares $0.00 +88.0%N/A1 $0.00 9/30/2022728,800 shares $0.00 -17.4%N/A0.7 $0.00 9/15/2022881,900 shares $0.00 -48.1%N/A1.1 $0.00 8/31/20221,700,000 shares $0.00 -5.6%N/A2.8 $0.00 8/15/20221,800,000 shares $0.00 +30.4%N/A2.5 $0.00 7/31/20221,380,000 shares $0.00 +11.3%26.8%1.8 $0.00 7/15/20221,240,000 shares $0.00 -1.6%24.1%2 $0.00 6/30/20221,260,000 shares $0.00 -9.4%24.5%2 $0.00 6/15/20221,390,000 shares $0.00 +7.8%27.0%2.3 $0.00 5/31/20221,290,000 shares $0.00 +41.6%N/A2.2 $0.00 5/15/2022910,800 shares $0.00 -1.5%N/A2.1 $0.00 4/30/2022924,900 shares $0.00 +11.6%2.2%2.3 $0.00 4/15/2022828,800 shares $0.00 -9.8%2.0%2.1 $0.00 3/31/2022918,800 shares $272.24 thousand -10.8%2.2%2.1 $0.30 3/15/20221,030,000 shares $0.00 +15.7%2.6%1.7 $0.00 2/28/2022890,200 shares $0.00 -7.1%2.3%1.3 $0.00 2/15/2022957,800 shares $0.00 -14.5%2.5%1.2 $0.00 1/31/20221,120,000 shares $0.00 -22.2%3.2%1.3 $0.00 1/15/20221,440,000 shares $0.00 -13.3%4.1%1.5 $0.00 12/31/20211,660,000 shares $0.00 -20.2%4.7%1.8 $0.00 12/15/20212,080,000 shares $0.00 -10.3%5.9%2.1 $0.00 11/30/20212,320,000 shares $0.00 +19.6%6.5%2.3 $0.00 11/15/20211,940,000 shares $0.00 +22.0%5.4%2.3 $0.00$100 Trillion “AI Metal” Found in American Ghost Town (Ad)Jeff Brown recently traveled to a ghost town in the middle of an American desert… To investigate what could be the biggest technology story of this decade. In short, he believes what he's holding in his hand is the key to the $100 trillion AI boom… And only one company here in the U.S. can mine this obscure metal.Click here to get the details on this virtual monopoly. 10/29/20211,590,000 shares $842.70 thousand -25.7%N/A1.8 $0.53 10/15/20212,140,000 shares $0.00 +5.9%6.0%1.3 $0.00 9/30/20212,020,000 shares $0.00 +4.7%5.7%1 $0.00 9/15/20211,930,000 shares $0.00 -6.8%5.4%1.1 $0.00 8/31/20212,070,000 shares $0.00 -5.1%5.9%1 $0.00 8/13/20212,180,000 shares $0.00 +29.8%6.2%1 $0.00 7/30/20211,680,000 shares $0.00 +44.8%5.2%0.8 $0.00 7/15/20211,160,000 shares $0.00 +8.4%3.6%1 $0.00 6/30/20211,070,000 shares $0.00 +29.3%3.3%1.3 $0.00 6/15/2021827,400 shares $0.00 -20.4%2.5%0.8 $0.00 5/28/20211,040,000 shares $0.00 +2.0%3.2%0.9 $0.00 5/14/20211,020,000 shares $0.00 -8.9%N/A0.6 $0.00 4/30/20211,120,000 shares $0.00 -9.7%N/A0.3 $0.00 4/15/20211,240,000 shares $954.80 thousand +6.9%N/A0.3 $0.77 3/31/20211,160,000 shares $928 thousand +13.7%N/A0.2 $0.80 3/15/20211,020,000 shares $856.80 thousand +53.1%N/A0.2 $0.84 2/26/2021666,400 shares $673.06 thousand -22.6%N/A0.1 $1.01 2/12/2021861,400 shares $783.87 thousand -22.4%N/A0.2 $0.91 1/29/20211,110,000 shares $1.38 million +6.7%N/A0.4 $1.24 1/15/20211,040,000 shares $1.25 million +2.0%N/A0.4 $1.20 12/31/20201,020,000 shares $740.42 thousand -22.7%N/A0.6 $0.73 12/15/20201,320,000 shares $918.59 thousand +10.0%N/A0.9 $0.70 11/30/20201,200,000 shares $762 thousand +26.3%N/A0.9 $0.64 11/15/2020950,500 shares $577.33 thousand -1.8%N/A0.8 $0.61 10/30/2020968,000 shares $599.87 thousand +18.0%N/A0.4 $0.62 10/15/2020820,100 shares $627.38 thousand +106.3%N/A0.3 $0.77 9/30/2020397,500 shares $290.18 thousand -22.8%N/A0.1 $0.73 9/15/2020515,100 shares $370.87 thousand +0.8%N/A0.1 $0.72 8/31/2020511,200 shares $388.51 thousand -6.4%N/A0.1 $0.76 NBY Short Interest - Frequently Asked Questions What is NovaBay Pharmaceuticals' current short interest? Short interest is the volume of NovaBay Pharmaceuticals shares that have been sold short but have not yet been closed out or covered. As of July 31st, traders have sold 34,200 shares of NBY short. 0.59% of NovaBay Pharmaceuticals' shares are currently sold short. Learn More on NovaBay Pharmaceuticals' current short interest. What is a good short interest ratio for NovaBay 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. NBY shares currently have a short interest ratio of 1.0. Learn More on NovaBay Pharmaceuticals's short interest ratio. What is a good short interest percentage for NovaBay 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. 0.59% of NovaBay Pharmaceuticals' floating shares are currently sold short. Is NovaBay Pharmaceuticals' short interest increasing or decreasing? NovaBay Pharmaceuticals saw a decrease in short interest in the month of July. As of July 31st, there was short interest totaling 34,200 shares, a decrease of 10.7% from the previous total of 38,300 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 NovaBay Pharmaceuticals' short interest compare to its competitors? 0.59% of NovaBay Pharmaceuticals' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to NovaBay Pharmaceuticals: FibroBiologics Inc. (3.47%), Q32 Bio Inc. (9.28%), BioAtla, Inc. (7.56%), NanoViricides, Inc. (0.57%), Elevation Oncology, Inc. (3.92%), Lisata Therapeutics, Inc. (0.70%), Oncotelic Therapeutics, Inc. (0.03%), Cingulate Inc. (4.54%), Relmada Therapeutics, Inc. (1.52%), Finch Therapeutics Group, Inc. (0.01%), 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 ($70.87 billion), Invesco QQQ ($30.12 billion), iShares Russell 2000 ETF ($19.85 billion), iShares 20+ Year Treasury Bond ETF ($10.34 billion), Strategy Inc ($8.98 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.61 billion), SPDR S&P Biotech ETF ($6.81 billion), Invesco S&P 500 Equal Weight ETF ($6.14 billion), Palo Alto Networks, Inc. ($5.97 billion), and Super Micro Computer, Inc. ($5.28 billion). View all of the most shorted stocks. What does it mean to sell short NovaBay Pharmaceuticals stock? Short selling NBY is an investing strategy that aims to generate trading profit from NovaBay Pharmaceuticals as its price is falling. NBY shares are trading up $0.13 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 NovaBay Pharmaceuticals? A short squeeze for NovaBay Pharmaceuticals 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 NBY, which in turn drives the price of the stock up even further. How often is NovaBay 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 NBY, twice per month. The most recent reporting period available is July, 31 2025. More Short Interest Resources from MarketBeat Related Companies FBLG Short Interest Data QTTB Short Interest Data BCAB Short Interest Data NNVC Short Interest Data ELEV Short Interest Data LSTA Short Interest Data OTLC Short Interest Data CING Short Interest Data RLMD Short Interest Data FNCH 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 (NYSEAMERICAN:NBY) was last updated on 8/30/2025 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 | SponsoredEveryone’s watching Nvidia right now. 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