NovaBay Pharmaceuticals (NBY) Short Interest Ratio & Short Volume $0.61 -0.01 (-1.61%) As of 01:43 PM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisChartEarningsHeadlinesInsider TradesSEC FilingsShort InterestBuy This Stock NovaBay Pharmaceuticals Short Interest DataNovaBay Pharmaceuticals (NBY) has a short interest of 41,500 shares, representing 0.71% of the float (the number of shares available for trading by the public). This marks a 4.53% increase in short interest from the previous month. The short interest ratio (days to cover) is 1.0, indicating that it would take 1.0 days of the average trading volume of 112,211 shares to cover all short positions.Current Short Interest41,500 sharesPrevious Short Interest39,700 sharesChange Vs. Previous Month+4.53%Dollar Volume Sold Short$24.07 thousandShort Interest Ratio1.0 Days to CoverLast Record DateJune 30, 2025Outstanding Shares5,820,000 sharesShort Percent of Float0.71%Today's Trading Volume16,994 sharesAverage Trading Volume112,211 sharesToday's Volume Vs. Average15% 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 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 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 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 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. 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 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 $0.00A grave, grave error. (Ad)I thought what happened 25 years ago was a once- in-a-lifetime event… but how wrong I was. Because here we are, a quarter of a century later, almost to the exact day, and it’s happening again. Here’s the full story for you. 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 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 $0.00A grave, grave error. (Ad)I thought what happened 25 years ago was a once- in-a-lifetime event… but how wrong I was. Because here we are, a quarter of a century later, almost to the exact day, and it’s happening again. Here’s the full story for you. 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 8/14/2020546,200 shares $475.19 thousand +12.0%N/A0.1 $0.87 7/31/2020487,900 shares $473.26 thousand -60.7%N/A0.1 $0.97 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 June 30th, traders have sold 41,500 shares of NBY short. 0.71% 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. 0.71% of NovaBay Pharmaceuticals' floating shares are currently sold short. Is NovaBay Pharmaceuticals' short interest increasing or decreasing? NovaBay Pharmaceuticals saw a increase in short interest in the month of June. As of June 30th, there was short interest totaling 41,500 shares, an increase of 4.5% from the previous total of 39,700 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? 0.71% 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: BioVie Inc. (7.52%), Leap Therapeutics, Inc. (9.27%), Flora Growth Corp. (1.57%), Sonnet BioTherapeutics Holdings, Inc. (1.32%), Bullfrog AI Holdings Inc. (5.43%), Equillium, Inc. (8.82%), 180 Life Sciences Corp. (2.23%), TherapeuticsMD, Inc. (14.02%), NextCure, Inc. (1.40%), Minerva Neurosciences, Inc (0.50%), 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 ($72.10 billion), Invesco QQQ ($26.89 billion), iShares Russell 2000 ETF ($19.61 billion), MicroStrategy Incorporated ($9.52 billion), iShares 20+ Year Treasury Bond ETF ($8.70 billion), WD-40 Company ($7.66 billion), Technology Select Sector SPDR Fund ($6.10 billion), Invesco S&P 500 Equal Weight ETF ($5.80 billion), Invesco S&P 500 Top 50 ETF ($5.53 billion), and Vanguard Large-Cap ETF ($5.35 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 down $0.01 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 appreciates 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 June, 30 2025. 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