TransMedics Group (TMDX) Short Interest Ratio & Short Volume $92.01 -0.42 (-0.45%) As of 04/30/2025 04:00 PM Eastern Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock TransMedics Group Short Interest DataTransMedics Group (TMDX) has a short interest of 8.78 million shares, representing 28.13% of the float (the number of shares available for trading by the public). This marks a -7.38% decrease in short interest from the previous month. The short interest ratio (days to cover) is 7.1, indicating that it would take 7.1 days of the average trading volume of 1.34 million shares to cover all short positions.Current Short Interest8,780,000 sharesPrevious Short Interest9,480,000 sharesChange Vs. Previous Month-7.38%Dollar Volume Sold Short$765.44 millionShort Interest Ratio7.1 Days to CoverLast Record DateApril 15, 2025Outstanding Shares33,824,000 sharesShort Percent of Float28.13%Today's Trading Volume747,092 sharesAverage Trading Volume1,343,709 sharesToday's Volume Vs. Average56% Short Selling TransMedics Group? Sign up to receive the latest short interest report for TransMedics Group and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartTMDX Short Interest Over TimeTMDX Days to Cover Over TimeTMDX Percentage of Float Shorted Over Time TransMedics Group Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 4/15/20258,780,000 shares $765.44 million -7.4%28.1%7.1 $87.18 3/31/20259,480,000 shares $637.81 million -0.7%30.4%5.7 $67.28 3/15/20259,550,000 shares $654.46 million +2.4%30.6%5.5 $68.53 2/28/20259,330,000 shares $712.07 million -13.3%29.9%5 $76.32 2/15/202510,760,000 shares $776.66 million -3.3%34.5%5.5 $72.18 1/31/202511,130,000 shares $751.83 million +23.8%N/A5.6 $67.55 1/15/20258,990,000 shares $543.36 million -1.8%N/A4 $60.44 12/31/20249,150,000 shares $570.50 million +5.9%N/A4.6 $62.35 12/15/20248,640,000 shares $555.21 million -7.0%N/A4.7 $64.26 11/30/20249,290,000 shares $805.54 million +3.5%N/A5.3 $86.71 Get the Latest News and Ratings for TMDX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for TransMedics Group and its competitors with MarketBeat's FREE daily newsletter. 11/15/20248,980,000 shares $722.71 million +6.5%N/A5.7 $80.48 10/31/20248,430,000 shares $691.01 million +30.9%N/A6.1 $81.97 10/15/20246,440,000 shares $849.05 million +7.0%N/A6.1 $131.84 9/30/20246,020,000 shares $945.14 million +9.5%N/A6.1 $157.00 9/15/20245,500,000 shares $832.81 million -6.3%N/A6.9 $151.42 8/31/20245,870,000 shares $986.51 million -3.1%N/A7.5 $168.06 8/15/20246,060,000 shares $1.03 billion +5.4%N/A8.1 $169.95 7/31/20245,750,000 shares $818.00 million -2.0%N/A7.5 $142.26 7/15/20245,870,000 shares $847.33 million -2.2%N/A7.4 $144.35 6/30/20246,000,000 shares $903.72 million +0.3%N/A7 $150.62 6/15/20245,981,200 shares $849.39 million +3.8%N/A6.8 $142.01 5/31/20245,760,000 shares $785.66 million +8.7%N/A6.6 $136.40 5/15/20245,300,000 shares $721.54 million -2.2%N/A5.6 $136.14 4/30/20245,420,000 shares $510.18 million -14.4%N/A6.1 $94.13 4/15/20246,330,000 shares $581.22 million +5.7%N/A8.7 $91.82 3/31/20245,990,000 shares $442.90 million +10.7%N/A8.9 $73.94 3/15/20245,410,000 shares $410.84 million +8.6%N/A9 $75.94 2/29/20244,980,000 shares $406.37 million +1.0%N/A8.8 $81.60 2/15/20244,930,000 shares $441.04 million -9.0%N/A9.4 $89.46 1/31/20245,420,000 shares $464.87 million No ChangeN/A8.2 $85.77 1/15/20245,420,000 shares $441.46 million -2.9%N/A7.5 $81.45 12/31/20235,580,000 shares $440.43 million -0.2%N/A7 $78.93 12/15/20235,590,000 shares $433.23 million -5.3%N/A6.8 $77.50 11/30/20235,900,000 shares $446.51 million -5.1%N/A6.7 $75.68 11/15/20236,220,000 shares $407.97 million -4.5%N/A6.9 $65.59 10/31/20236,510,000 shares $243.99 million +11.3%N/A7.1 $37.48 10/15/20235,850,000 shares $250.09 million +12.7%N/A7.3 $42.75 9/30/20235,190,000 shares $284.15 million +8.8%N/A7 $54.75 9/15/20234,770,000 shares $284.01 million +14.9%N/A7 $59.54 8/31/20234,150,000 shares $272.36 million +13.1%N/A6.2 $65.63Watch This Robotics Demo Before July 23rd (Ad)Jeff Brown, the tech legend who picked shares of Nvidia in 2016 before they jumped by more than 22,000%... Just did a demo of what Nvidia’s CEO said will be "the first multitrillion-dollar robotics industry." Click here to watch the demo… 8/15/20233,670,000 shares $231.17 million +3.4%N/A5.9 $62.99 7/31/20233,550,000 shares $330.79 million -8.3%N/A5.4 $93.18 7/15/20233,870,000 shares $354.14 million -2.0%N/A6.2 $91.51 6/30/20233,950,000 shares $331.72 million +3.7%N/A6.4 $83.98 6/15/20233,810,000 shares $303.43 million +9.2%N/A6.2 $79.64 5/31/20233,490,000 shares $253.58 million +5.8%N/A5.6 $72.66 5/15/20233,300,000 shares $247.37 million +35.3%N/A5.2 $74.96 4/30/20232,440,000 shares $193.00 million +13.0%N/A4.1 $79.10 4/15/20232,160,000 shares $143.06 million +16.8%N/A4.3 $66.23 3/31/20231,850,000 shares $140.10 million +14.2%N/A4.2 $75.73 3/15/20231,620,000 shares $121.06 million +8.0%N/A3.9 $74.73 2/28/20231,500,000 shares $120.11 million +11.9%N/A3.8 $80.07 2/15/20231,340,000 shares $90.24 million +1.5%N/A3.6 $67.34 1/31/20231,320,000 shares $83.19 million -12.6%N/A3.9 $63.02 1/15/20231,510,000 shares $91.96 million -1.3%N/A4.2 $60.90 12/30/20221,530,000 shares $94.43 million No ChangeN/A4.5 $61.72 12/15/20221,530,000 shares $90.93 million -19.9%N/A4.3 $59.43 11/30/20221,910,000 shares $118.17 million -9.9%N/A4.9 $61.87 11/15/20222,120,000 shares $121.96 million -7.4%N/A5.2 $57.53 10/31/20222,290,000 shares $110.42 million -1.7%N/A5.4 $48.22 10/15/20222,330,000 shares $91.06 million +13.7%N/A5 $39.08 9/30/20222,050,000 shares $85.57 million +45.4%N/A4.4 $41.74 9/15/20221,410,000 shares $73.94 million -7.8%N/A3.1 $52.44 8/31/20221,530,000 shares $79.61 million -1.3%N/A3.7 $52.03 8/15/20221,550,000 shares $73.78 million -1.9%N/A4.2 $47.60 7/31/20221,580,000 shares $63.80 million +5.3%N/A4.6 $40.38 7/15/20221,500,000 shares $50.10 million -11.8%5.8%5 $33.40 6/30/20221,700,000 shares $53.47 million +4.9%6.6%6 $31.45 6/15/20221,620,000 shares $45.68 million +3.2%6.3%6.1 $28.20 5/31/20221,570,000 shares $45.80 million -9.3%6.1%5.6 $29.17 5/15/20221,730,000 shares $50.53 million +55.9%6.7%5.8 $29.21 4/30/20221,110,000 shares $23.27 million -0.9%4.3%4 $20.96 4/15/20221,120,000 shares $26.30 million No Change4.4%5.3 $23.48 3/31/20221,120,000 shares $30.17 million -33.7%4.4%5.4 $26.94 3/15/20221,690,000 shares $30.01 million +10.5%6.6%8.3 $17.76 2/28/20221,530,000 shares $28.34 million +25.4%6.0%8.3 $18.52 2/15/20221,220,000 shares $19.04 million +8.9%4.8%6.5 $15.61 1/31/20221,120,000 shares $17.77 million +1.8%4.9%5.7 $15.87 1/15/20221,100,000 shares $18.16 million +0.9%4.8%5.6 $16.51 12/31/20211,090,000 shares $20.88 million -18.7%4.7%5.4 $19.16 12/15/20211,340,000 shares $29.25 million +4.7%5.8%6.2 $21.83 11/30/20211,280,000 shares $28.21 million -3.8%5.2%6.1 $22.04 11/15/20211,330,000 shares $34.22 million +50.1%5.4%5.9 $25.73 10/29/2021886,200 shares $24.31 million -5.9%3.6%4.4 $27.43 10/15/2021942,000 shares $25.01 million +0.5%3.8%4.3 $26.55 9/30/2021936,900 shares $31.00 million -8.2%3.8%3.5 $33.09 9/15/20211,020,000 shares $32.29 million -5.6%4.1%3.4 $31.66 8/31/20211,080,000 shares $35.29 million -12.2%4.4%3.3 $32.68 8/13/20211,230,000 shares $35.74 million -12.8%5.0%3.8 $29.06 7/30/20211,410,000 shares $40.21 million +6.8%5.7%4.1 $28.52Watch This Robotics Demo Before July 23rd (Ad)Jeff Brown, the tech legend who picked shares of Nvidia in 2016 before they jumped by more than 22,000%... Just did a demo of what Nvidia’s CEO said will be "the first multitrillion-dollar robotics industry." Click here to watch the demo… 7/15/20211,320,000 shares $40.97 million -14.3%5.3%3.4 $31.04 6/30/20211,540,000 shares $51.10 million +10.0%6.2%3.8 $33.18 6/15/20211,400,000 shares $39.91 million +11.1%5.7%2.7 $28.51 5/28/20211,260,000 shares $32.31 million +23.5%5.1%2.1 $25.64 5/14/20211,020,000 shares $22.06 million +2.4%N/A1.4 $21.63 4/30/2021996,100 shares $28.71 million +13.0%N/A1 $28.82 4/15/2021881,700 shares $25.68 million -9.4%N/A1 $29.13 3/31/2021973,300 shares $39.69 million +30.8%N/A1.1 $40.78 3/15/2021744,400 shares $26.96 million -35.3%N/A1.1 $36.22 2/26/20211,150,000 shares $42.41 million +33.8%N/A2.1 $36.88 2/12/2021859,300 shares $25.74 million -4.2%N/A2.1 $29.95 1/29/2021896,700 shares $20.96 million +3.3%N/A6 $23.38 1/15/2021868,200 shares $16.58 million +2.1%N/A8.9 $19.10 12/31/2020850,400 shares $16.13 million +1.3%N/A10.5 $18.97 12/15/2020839,400 shares $12.92 million -10.4%N/A7 $15.39 11/30/2020937,200 shares $13.86 million -2.9%N/A6.3 $14.79 11/15/2020965,200 shares $13.83 million +10.6%N/A6 $14.33 10/30/2020873,100 shares $10.82 million -9.1%N/A5.1 $12.39 10/15/2020960,900 shares $12.51 million -39.9%N/A5.3 $13.02 9/30/20201,600,000 shares $22.05 million +15.1%N/A8.4 $13.78 9/15/20201,390,000 shares $23.96 million +18.8%N/A7.7 $17.24 8/31/20201,170,000 shares $20.86 million -0.9%N/A7.2 $17.83 8/14/20201,180,000 shares $21.71 million -9.2%N/A5.7 $18.40 7/31/20201,300,000 shares $23.48 million -10.3%N/A6.6 $18.06 7/15/20201,450,000 shares $24.11 million +10.7%N/A7.7 $16.63 6/30/20201,310,000 shares $23.48 million +21.3%6.5%7.1 $17.92 6/15/20201,080,000 shares $16.19 million -46.5%5.4%6.5 $14.99 5/29/20202,020,000 shares $26.68 million +49.6%10.0%12.4 $13.21 5/15/20201,350,000 shares $20.70 million +3.1%8.5%8.8 $15.33 TMDX Short Interest - Frequently Asked Questions What is TransMedics Group's current short interest? Short interest is the volume of TransMedics Group shares that have been sold short but have not yet been covered or closed out. As of April 15th, traders have sold 8,780,000 shares of TMDX short. 28.13% of TransMedics Group's shares are currently sold short. Learn More on TransMedics Group's current short interest. What is a good short interest ratio for TransMedics Group? 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. TMDX shares currently have a short interest ratio of 7.0. Learn More on TransMedics Group's short interest ratio. Which institutional investors are shorting TransMedics Group? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of TransMedics Group: IMC Chicago LLC, Arrowpoint Investment Partners Singapore Pte. Ltd., Wolverine Trading LLC, Millennium Management LLC, Group One Trading LLC, Cubist Systematic Strategies LLC, Citadel Advisors LLC, Jane Street Group LLC, Tudor Investment Corp ET AL, Susquehanna International Group LLP, Concourse Financial Group Securities Inc., Walleye Trading LLC, Walleye Capital LLC, Simplex Trading LLC, and Wolverine Asset Management LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for TransMedics Group? 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. 28.13% of TransMedics Group's floating shares are currently sold short. Is TransMedics Group's short interest increasing or decreasing? TransMedics Group saw a decrease in short interest during the month of April. As of April 15th, there was short interest totaling 8,780,000 shares, a decrease of 7.4% from the previous total of 9,480,000 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. How does TransMedics Group's short interest compare to its competitors? 28.13% of TransMedics Group's shares are currently sold short. Here is how the short interest of companies in the industry of "medical equipment" compare to TransMedics Group: Smith & Nephew plc (0.26%), Penumbra, Inc. (4.29%), Solventum Co. (3.17%), Stevanato Group S.p.A. (6.27%), Glaukos Co. (6.14%), Bausch + Lomb Co. (5.48%), Inari Medical, Inc. (4.24%), Inspire Medical Systems, Inc. (9.31%), Soleno Therapeutics, Inc. (12.65%), iRhythm Technologies, Inc. (10.04%), 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 ($21.71 billion), iShares 20+ Year Treasury Bond ETF ($9.48 billion), Strategy Incorporated ($8.92 billion), Charter Communications, Inc. ($3.86 billion), Apollo Global Management, Inc. ($3.86 billion), Capital One Financial Co. ($3.72 billion), Super Micro Computer, Inc. ($3.47 billion), AppLovin Co. ($2.64 billion), VanEck Semiconductor ETF ($2.46 billion), and The Kroger Co. ($2.33 billion). View all of the most shorted stocks. What does it mean to sell short TransMedics Group stock? Short selling TMDX is an investing strategy that aims to generate trading profit from TransMedics Group as its price is falling. TMDX shares are trading down $0.42 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 TransMedics Group? A short squeeze for TransMedics Group 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 TMDX, which in turn drives the price of the stock up even further. How often is TransMedics Group'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 TMDX, twice per month. The most recent reporting period available is April, 15 2025. More Short Interest Resources from MarketBeat Related Companies SNN Short Squeeze PEN Short Squeeze SOLV Short Squeeze STVN Short Squeeze GKOS Short Squeeze BLCO Short Squeeze NARI Short Squeeze INSP Short Squeeze SLNO Short Squeeze IRTC Short Squeeze Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:TMDX) was last updated on 5/1/2025 by MarketBeat.com Staff From Our PartnersHow to invest in Elon Musk’s Optimus before its launchElon Musk is set to completely take over the AI industry with Optimus… A breakthrough AI-powered robot that El...InvestorPlace | SponsoredIs he more powerful than Trump? Is there anybody more powerful than Donald Trump right now? 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