Harvard Bioscience (HBIO) Short Interest Ratio & Short Volume $0.39 -0.01 (-1.27%) As of 04:00 PM Eastern Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Harvard Bioscience Short Interest DataHarvard Bioscience (HBIO) has a short interest of 1.05 million shares, representing 2.76% of the float (the number of shares available for trading by the public). This marks a 0.00% change in short interest from the previous month. The short interest ratio (days to cover) is 3.1, indicating that it would take 3.1 days of the average trading volume of 193,484 shares to cover all short positions.Current Short Interest1,050,000 sharesPrevious Short Interest1,050,000 sharesChange Vs. Previous MonthNo ChangeDollar Volume Sold Short$594,300.00Short Interest Ratio3.1 Days to CoverLast Record DateMarch 31, 2025Outstanding Shares44,074,000 sharesFloat Size38,010,000 sharesShort Percent of Float2.76%Today's Trading Volume232,740 sharesAverage Trading Volume193,484 sharesToday's Volume Vs. Average120% Short Selling Harvard Bioscience? Sign up to receive the latest short interest report for Harvard Bioscience and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartHBIO Short Interest Over TimeHBIO Days to Cover Over TimeHBIO Percentage of Float Shorted Over Time Remove Ads Harvard Bioscience Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 3/31/20251,050,000 shares $594,300.00 No Change2.8%3.1 $0.57 3/15/20251,050,000 shares $680,295.00 +8.9%2.8%3.5 $0.65 2/28/2025964,400 shares $813,471.40 +6.4%2.6%3.9 $0.84 2/15/2025906,600 shares $1.22 million +19.5%2.4%3.8 $1.35 1/31/2025758,600 shares $1.30 million -3.4%N/A3.5 $1.71 1/15/2025785,100 shares $1.55 million +20.0%N/A4 $1.98 12/31/2024654,400 shares $1.38 million +22.8%N/A3.9 $2.11 12/15/2024533,100 shares $1.15 million +18.4%N/A3.5 $2.16 11/30/2024450,100 shares $990,220.00 +20.3%N/A3.1 $2.20 11/15/2024374,100 shares $800,574.00 -6.2%N/A2.7 $2.14 Get the Latest News and Ratings for HBIO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Harvard Bioscience and its competitors with MarketBeat's FREE daily newsletter. 10/31/2024398,900 shares $937,415.00 +13.8%N/A3.4 $2.35 10/15/2024350,600 shares $858,970.00 +11.4%N/A3.2 $2.45 9/30/2024314,700 shares $846,543.00 -26.7%N/A2.8 $2.69 9/15/2024429,100 shares $1.24 million +0.6%N/A3.3 $2.88 8/31/2024426,600 shares $1.23 million -0.1%1.1%2.9 $2.88 8/15/2024426,800 shares $1.22 million -4.4%1.1%2.8 $2.86 7/31/2024446,500 shares $1.43 million +3.7%1.1%3 $3.20 7/15/2024430,700 shares $1.43 million -19.4%1.1%2.8 $3.32 6/30/2024534,400 shares $1.52 million +38.4%1.3%3.6 $2.85 6/15/2024386,200 shares $1.12 million -16.3%1.0%3.1 $2.90 5/31/2024461,500 shares $1.46 million -25.6%N/A3.9 $3.17 5/15/2024620,100 shares $2.14 million -9.0%N/A6.5 $3.45 4/30/2024681,200 shares $2.60 million +1.2%N/A7.5 $3.82 4/15/2024673,000 shares $2.99 million +5.7%N/A7.7 $4.44 3/31/2024636,700 shares $2.70 million -11.2%N/A7.6 $4.24 3/15/2024716,600 shares $2.90 million +0.5%N/A8.5 $4.05 2/29/2024712,900 shares $3.09 million -3.4%1.8%8.4 $4.33 2/15/2024738,300 shares $3.59 million -6.5%1.9%8.5 $4.86 1/31/2024789,400 shares $3.47 million -8.8%2.0%9.1 $4.40 1/15/2024865,500 shares $4.24 million -4.8%2.2%9.9 $4.90 12/31/2023909,500 shares $4.87 million +3.1%2.3%10.6 $5.35 12/15/2023881,900 shares $4.32 million -7.6%2.2%10.1 $4.90 11/30/2023954,600 shares $4.07 million -10.8%2.4%10.7 $4.26 11/15/20231,070,000 shares $4.55 million +5.9%2.7%11.8 $4.25 10/31/20231,010,000 shares $4.43 million -2.9%2.6%9.6 $4.39 10/15/20231,040,000 shares $4.31 million -1.0%2.6%8.4 $4.14 9/30/20231,050,000 shares $4.52 million +13.0%2.7%7.7 $4.30 9/15/2023928,900 shares $4.23 million -3.7%2.3%5.8 $4.55 8/31/2023964,800 shares $4.25 million -1.9%2.4%3.7 $4.41 8/15/2023983,800 shares $4.17 million +0.6%2.5%3.5 $4.24Warning: “DOGE Collapse” imminent (Ad)Elon Strikes Back You may already sense that the tide is turning against Elon Musk and DOGE. Just this week, President Trump promised to buy a Tesla to help support Musk in the face of a boycott against his company. But according to one research group, with connections to the Pentagon and the U.S. government, Elon's preparing to strike back in a much bigger way in the days ahead.Click here to see what they’re predicting now. 7/31/2023978,300 shares $4.55 million -4.1%2.5%3.3 $4.65 7/15/20231,020,000 shares $5.57 million -1.9%2.6%3.3 $5.46 6/30/20231,040,000 shares $5.71 million +221.3%2.7%3.2 $5.49 6/15/2023323,700 shares $1.76 million -16.5%0.8%1 $5.44 5/31/2023387,500 shares $2.17 million +0.2%1.0%1.8 $5.59 5/15/2023386,700 shares $2.06 million +10.9%1.0%2.2 $5.34 4/30/2023348,800 shares $2.00 million +28.1%1.0%2.3 $5.72 4/15/2023272,200 shares $1.34 million -7.6%0.8%2.5 $4.93 3/31/2023294,700 shares $1.24 million +14.9%0.8%3.1 $4.20 3/15/2023256,400 shares $676,896.00 -1.8%0.7%2.4 $2.64 2/28/2023261,100 shares $738,913.00 -1.3%0.7%2.3 $2.83 2/15/2023264,500 shares $812,015.00 +1.7%0.7%2.3 $3.07 1/31/2023260,000 shares $774,800.00 -2.1%0.7%1.9 $2.98 1/15/2023265,600 shares $778,208.00 -32.6%0.7%1.9 $2.93 12/30/2022394,100 shares $1.09 million +22.9%1.1%2.8 $2.77 12/15/2022320,600 shares $769,440.00 +9.4%0.9%2.1 $2.40 11/30/2022293,200 shares $750,592.00 +5.6%0.8%2.6 $2.56 11/15/2022277,700 shares $666,480.00 +8.1%0.8%2.6 $2.40 10/31/2022256,800 shares $690,792.00 -6.3%0.7%2.4 $2.69 10/15/2022274,100 shares $619,466.00 +2.5%0.8%2.3 $2.26 9/30/2022267,400 shares $684,544.00 +3.6%0.7%2.1 $2.56 9/15/2022258,200 shares $800,420.00 -5.6%0.7%1.3 $3.10 8/31/2022273,500 shares $902,550.00 -5.8%0.8%1.2 $3.30 8/15/2022290,300 shares $937,669.00 -8.0%0.8%1.1 $3.23 7/31/2022315,400 shares $1.19 million -13.8%0.9%1.1 $3.76 7/15/2022365,700 shares $1.33 million -21.2%1.0%1.2 $3.65 6/30/2022464,000 shares $1.67 million -72.1%1.4%1.5 $3.60 6/15/20221,660,000 shares $6.09 million +5.7%5.1%5.3 $3.67 5/31/20221,570,000 shares $5.75 million -1.3%4.3%7.1 $3.66 5/15/20221,590,000 shares $6.01 million +30.3%4.4%8.1 $3.78 4/30/20221,220,000 shares $6.37 million +11.9%3.3%6.7 $5.22 4/15/20221,090,000 shares $6.41 million +1.9%3.0%7.1 $5.88 3/31/20221,070,000 shares $6.64 million +7.0%2.9%7 $6.21 3/15/2022999,600 shares $5.89 million +24.6%2.7%6.6 $5.89 2/28/2022802,600 shares $4.33 million +2.7%2.2%5 $5.40 2/15/2022781,500 shares $4.29 million +20.1%2.1%4.9 $5.49 1/31/2022650,700 shares $3.79 million +9.4%1.8%4.2 $5.82 1/15/2022594,700 shares $3.60 million -2.1%N/A0 $6.06 12/31/2021607,700 shares $4.28 million +19.5%1.7%3.8 $7.05 12/15/2021508,500 shares $3.53 million -0.3%1.4%3 $6.94 11/30/2021509,900 shares $3.41 million +0.5%1.4%3.2 $6.69 11/15/2021507,200 shares $3.94 million -16.4%1.4%3.1 $7.77 10/29/2021606,400 shares $4.57 million +5.6%1.7%3.4 $7.53 10/15/2021574,000 shares $3.93 million -10.9%1.6%3.2 $6.84 9/30/2021644,000 shares $4.50 million -5.1%1.8%3.5 $6.98 9/15/2021678,300 shares $5.32 million +0.6%1.9%3.2 $7.84 8/31/2021674,400 shares $5.57 million +1.7%1.9%3.1 $8.26 8/13/2021663,300 shares $5.61 million +2.7%1.8%2.9 $8.46 7/30/2021646,200 shares $5.10 million -9.6%1.8%2.7 $7.89 7/15/2021715,100 shares $5.44 million +7.4%2.0%2.8 $7.61Warning: “DOGE Collapse” imminent (Ad)Elon Strikes Back You may already sense that the tide is turning against Elon Musk and DOGE. Just this week, President Trump promised to buy a Tesla to help support Musk in the face of a boycott against his company. But according to one research group, with connections to the Pentagon and the U.S. government, Elon's preparing to strike back in a much bigger way in the days ahead.Click here to see what they’re predicting now. 6/30/2021665,800 shares $5.55 million -3.2%1.9%2.5 $8.33 6/15/2021688,000 shares $5.19 million -16.9%1.9%2.8 $7.55 5/28/2021828,000 shares $5.80 million -4.1%2.3%2.8 $7.00 5/14/2021863,600 shares $5.98 million +8.2%2.4%3.1 $6.92 4/30/2021798,200 shares $5.75 million -16.3%2.2%3.1 $7.20 4/15/2021953,700 shares $6.33 million +16.8%2.7%4.2 $6.64 3/31/2021816,500 shares $4.44 million +21.9%2.3%3.7 $5.44 3/15/2021669,800 shares $4.30 million +0.7%1.9%3.4 $6.42 2/26/2021665,100 shares $2.88 million +4.6%2.0%5.2 $4.33 2/12/2021636,100 shares $2.98 million -1.8%1.8%5.3 $4.69 1/29/2021647,900 shares $2.93 million +5.5%1.9%5 $4.52 1/15/2021614,300 shares $2.55 million -0.1%1.8%4.7 $4.15 12/31/2020615,000 shares $2.63 million +5.2%1.8%5.2 $4.27 12/15/2020584,400 shares $2.48 million -7.7%1.7%4.9 $4.24 11/30/2020632,900 shares $2.45 million -11.1%1.8%5.3 $3.87 11/15/2020711,600 shares $2.88 million -44.8%2.1%5.9 $4.05 10/30/20201,290,000 shares $4.26 million -5.2%3.8%11.9 $3.30 10/15/20201,360,000 shares $4.43 million No Change4.0%11.8 $3.26 9/30/20201,360,000 shares $4.09 million -3.6%4.0%0 $3.01 9/15/20201,410,000 shares $4.53 million -0.7%4.1%5.4 $3.21 8/31/20201,420,000 shares $4.76 million -4.1%4.1%4.7 $3.35 8/14/20201,480,000 shares $5.42 million No Change4.3%4.7 $3.66 7/31/20201,480,000 shares $4.60 million +2.1%4.4%4.5 $3.11 7/15/20201,450,000 shares $4.89 million -40.8%4.3%4.2 $3.37 6/30/20202,450,000 shares $7.60 million +64.4%7.2%6.9 $3.10 6/15/20201,490,000 shares $4.05 million +41.9%4.4%6.4 $2.72 5/29/20201,050,000 shares $2.77 million +5.0%3.1%5.1 $2.64 5/15/20201,000,000 shares $2.58 million -9.1%2.9%4.6 $2.58 4/30/20201,100,000 shares $3.03 million +79.1%3.2%5.5 $2.75 HBIO Short Interest - Frequently Asked Questions What is Harvard Bioscience's current short interest? Short interest is the volume of Harvard Bioscience shares that have been sold short but have not yet been closed out or covered. As of March 31st, traders have sold 1,050,000 shares of HBIO short. 2.76% of Harvard Bioscience's shares are currently sold short. Learn More on Harvard Bioscience's current short interest. What is a good short interest ratio for Harvard Bioscience? 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. HBIO shares currently have a short interest ratio of 3.0. Learn More on Harvard Bioscience's short interest ratio. Which institutional investors are shorting Harvard Bioscience? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Harvard Bioscience: Group One Trading LLC, Citadel Advisors LLC, and 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 Harvard Bioscience? 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. 2.76% of Harvard Bioscience's floating shares are currently sold short. What is Harvard Bioscience's float size? Harvard Bioscience currently has issued a total of 44,074,000 shares. Some of Harvard Bioscience'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. Harvard Bioscience currently has a public float of 38,010,000 shares. How does Harvard Bioscience's short interest compare to its competitors? 2.76% of Harvard Bioscience's shares are currently sold short. Here is how the short interest of companies compare to Harvard Bioscience: Thermo Fisher Scientific Inc. (1.05%), Agilent Technologies, Inc. (1.27%), Mettler-Toledo International Inc. (1.81%), Waters Co. (2.45%), Illumina, Inc. (3.58%), Bio-Techne Co. (3.98%), Charles River Laboratories International, Inc. (5.48%), Bio-Rad Laboratories, Inc. (3.70%), Bruker Co. (8.28%), Pacific Biosciences of California, Inc. (20.43%), 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 ($21.93 billion), iShares 20+ Year Treasury Bond ETF ($9.31 billion), Strategy Incorporated ($8.42 billion), Charter Communications, Inc. ($4.52 billion), Apollo Global Management, Inc. ($4.26 billion), Super Micro Computer, Inc. ($3.98 billion), Capital One Financial Co. ($3.79 billion), TC Energy Co. ($3.43 billion), AppLovin Co. ($2.91 billion), and Schlumberger Limited ($2.89 billion). View all of the most shorted stocks. What does it mean to sell short Harvard Bioscience stock? Short selling HBIO is an investing strategy that aims to generate trading profit from Harvard Bioscience as its price is falling. HBIO 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 Harvard Bioscience? A short squeeze for Harvard Bioscience 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 HBIO, which in turn drives the price of the stock up even further. How often is Harvard Bioscience'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 HBIO, twice per month. The most recent reporting period available is March, 31 2025. More Short Interest Resources from MarketBeat Related Companies Thermo Fisher Scientific Short Interest Data Agilent Technologies Short Interest Data Mettler-Toledo International Short Interest Data Waters Short Interest Data Illumina Short Interest Data Bio-Techne Short Interest Data Charles River Laboratories International Short Interest Data Bio-Rad Laboratories Short Interest Data Bruker Short Interest Data Pacific Biosciences of California 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:HBIO) was last updated on 4/16/2025 by MarketBeat.com Staff From Our PartnersThis Crypto Is Set to Explode in JanuaryThe crypto summit Wall Street wants to stop Learn how to structure your portfolio like the top hedge funds...Crypto 101 Media | Sponsored[Action Required] Claim Your FREE IRS Loophole GuideThis shouldn't surprise anyone who's been paying attention, but... 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