Certara (CERT) Short Interest Ratio & Short Volume $10.66 -0.18 (-1.66%) Closing price 09/2/2025 04:00 PM EasternExtended Trading$10.48 -0.18 (-1.68%) As of 04:03 AM 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 AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Certara Short Interest DataCertara (CERT) has a short interest of 12.60 million shares, representing 10.82% of the float (the number of shares available for trading by the public). This marks a 12.60% increase in short interest from the previous month. The short interest ratio (days to cover) is 7.8, indicating that it would take 7.8 days of the average trading volume of 1.23 million shares to cover all short positions.Current Short Interest12,600,000 sharesPrevious Short Interest11,190,000 sharesChange Vs. Previous Month+12.60%Dollar Volume Sold Short$138.85 millionShort Interest Ratio7.8 Days to CoverLast Record DateAugust 15, 2025Outstanding Shares160,620,000 sharesFloat Size116,470,000 sharesShort Percent of Float10.82%Today's Trading Volume1,406,944 sharesAverage Trading Volume1,232,055 sharesToday's Volume Vs. Average114% Short Selling Certara? Sign up to receive the latest short interest report for Certara and its competitors with MarketBeat's FREE newsletter. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartCERT Short Interest Over TimeCERT Days to Cover Over TimeCERT Percentage of Float Shorted Over Time Certara Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 8/15/202512,600,000 shares $138.85 million +12.6%10.8%7.8 $11.02 7/31/202511,190,000 shares $110.11 million +13.8%9.5%6.5 $9.84 7/15/20259,830,000 shares $102.33 million +3.7%8.2%5.4 $10.41 6/30/20259,480,000 shares $110.92 million +5.8%7.9%4.5 $11.70 6/15/20258,960,000 shares $98.65 million +7.7%7.5%4.3 $11.01 5/31/20258,320,000 shares $94.76 million -2.2%7.0%4.3 $11.39 5/15/20258,510,000 shares $98.89 million -9.7%7.1%4.3 $11.62 4/30/20259,420,000 shares $130.56 million +3.9%7.7%4.9 $13.86 4/15/20259,070,000 shares $125.89 million +46.8%7.5%5 $13.88 3/31/20256,180,000 shares $61.18 million +4.6%5.1%4.3 $9.90 Get the Latest News and Ratings for CERT and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Certara and its competitors with MarketBeat's FREE daily newsletter. 3/15/20255,910,000 shares $64.54 million +10.1%4.9%4.5 $10.92 2/28/20255,370,000 shares $64.33 million -13.0%4.4%4 $11.98 2/15/20256,170,000 shares $87.55 million +17.3%5.1%4.8 $14.19 1/31/20255,260,000 shares $74.85 million +18.7%4.7%4.2 $14.23 1/15/20254,430,000 shares $52.98 million +5.7%4.0%3.6 $11.96 12/31/20244,190,000 shares $44.62 million -1.6%3.8%3.6 $10.65 12/15/20244,260,000 shares $48.86 million -13.9%3.8%3.5 $11.47 11/30/20244,950,000 shares $55.49 million -0.2%4.5%3.7 $11.21 11/15/20244,960,000 shares $49.40 million -7.5%4.5%3.8 $9.96 10/31/20245,360,000 shares $54.67 million +31.4%4.8%4.2 $10.20 10/15/20244,080,000 shares $45.74 million +4.1%3.7%3.4 $11.21 9/30/20243,920,000 shares $45.90 million -9.5%3.5%3.5 $11.71 9/15/20244,330,000 shares $47.41 million -18.2%3.9%4.2 $10.95 8/31/20245,290,000 shares $64.80 million -4.9%4.8%6.3 $12.25 8/15/20245,560,000 shares $67.61 million +11.2%5.0%7.8 $12.16 7/31/20245,000,000 shares $78.05 million +0.2%4.5%7.7 $15.61 7/15/20244,990,000 shares $78.09 million -0.8%4.5%8.3 $15.65 6/30/20245,030,000 shares $69.67 million +14.3%4.6%8.8 $13.85 6/15/20244,400,000 shares $65.52 million -15.7%4.0%7.6 $14.89 5/31/20245,220,000 shares $88.48 million -7.9%4.8%9.7 $16.95 5/15/20245,670,000 shares $90.27 million -0.5%5.2%10.4 $15.92 4/30/20245,700,000 shares $97.53 million -0.2%5.2%10.7 $17.11 4/15/20245,710,000 shares $99.58 million +0.7%5.2%10.3 $17.44 3/31/20245,670,000 shares $101.38 million +7.4%5.2%10.3 $17.88 3/15/20245,280,000 shares $97.47 million +12.6%4.8%10 $18.46 2/29/20244,690,000 shares $79.17 million -0.9%4.3%8.1 $16.88 2/15/20244,730,000 shares $85.80 million +3.1%4.3%8.6 $18.14 1/31/20244,590,000 shares $74.17 million +7.8%4.2%7.5 $16.16 1/15/20244,260,000 shares $69.61 million -10.7%3.9%6.9 $16.34 12/31/20234,770,000 shares $83.90 million -7.7%4.4%7.4 $17.59"I'm risking my reputation on this" (Ad)A massive supply shock is building in the crypto market that could send Bitcoin to $300,000 this year. That's why we've rushed to update our book "Crypto Revolution" – to show you exactly how to position yourself for this historic opportunity.Click here to claim your FREE copy now! 12/15/20235,170,000 shares $87.89 million +11.7%4.7%7.7 $17.00 11/30/20234,630,000 shares $66.72 million -1.3%4.2%6.8 $14.41 11/15/20234,690,000 shares $69.08 million -11.0%4.3%6.9 $14.73 10/31/20235,270,000 shares $64.24 million -18.7%4.8%7.4 $12.19 10/15/20236,480,000 shares $89.04 million +4.9%6.0%9.4 $13.74 9/30/20236,180,000 shares $89.86 million +3.0%5.7%9.2 $14.54 9/15/20236,000,000 shares $84.60 million -8.0%5.5%8.1 $14.10 8/31/20236,520,000 shares $105.36 million -5.5%6.0%7.3 $16.16 8/15/20236,900,000 shares $116.61 million -3.5%6.4%6.6 $16.90 7/31/20237,150,000 shares $139.21 million +3.5%6.6%6.5 $19.47 7/15/20236,910,000 shares $133.02 million -11.0%6.4%5.9 $19.25 6/30/20237,760,000 shares $141.31 million -13.1%7.2%6.4 $18.21 6/15/20238,930,000 shares $158.86 million -14.0%11.4%7.3 $17.79 5/31/202310,380,000 shares $215.70 million +26.9%13.3%6.1 $20.78 5/15/20238,180,000 shares $166.71 million +1.9%10.5%5.2 $20.38 4/30/20238,030,000 shares $194.09 million +11.5%10.3%5.5 $24.17 4/15/20237,200,000 shares $173.45 million -3.1%9.3%5.3 $24.09 3/31/20237,430,000 shares $179.14 million +164.4%10.4%5.6 $24.11 3/15/20232,810,000 shares $57.77 million -8.5%3.9%2.3 $20.56 2/28/20233,070,000 shares $55.63 million +4.1%4.3%4.8 $18.12 2/15/20232,950,000 shares $57.35 million +2.1%4.1%4.6 $19.44 1/31/20232,890,000 shares $56.07 million +5.5%4.1%3.9 $19.40 1/15/20232,740,000 shares $47.65 million +0.7%3.8%3.6 $17.39 12/30/20222,720,000 shares $43.71 million -8.1%3.8%3.6 $16.07 12/15/20222,960,000 shares $48.54 million -3.3%4.1%3.9 $16.40 11/30/20223,060,000 shares $51.96 million +5.2%3.0%3.8 $16.98 11/15/20222,910,000 shares $45.34 million +32.3%2.9%3.7 $15.58 10/31/20222,200,000 shares $26.91 million +15.2%2.2%2.4 $12.23 10/15/20221,910,000 shares $22.23 million +11.1%1.9%2.3 $11.64 9/30/20221,720,000 shares $22.84 million +5.5%1.7%2.2 $13.28 9/15/20221,630,000 shares $24.38 million -30.6%1.6%2.1 $14.96 8/31/20222,350,000 shares $36.82 million -7.5%2.3%3.2 $15.67 8/15/20222,540,000 shares $45.44 million -1.2%2.3%3.6 $17.89 7/31/20222,570,000 shares $59.08 million -4.1%2.5%5 $22.99 7/15/20222,680,000 shares $59.74 million -5.6%2.6%5 $22.29 6/30/20222,840,000 shares $60.95 million -9.0%2.8%5.1 $21.46 6/15/20223,120,000 shares $58.91 million -15.7%3.1%5.9 $18.88 5/31/20223,700,000 shares $75.18 million +16.7%3.7%6.4 $20.32 5/15/20223,170,000 shares $60.55 million -7.6%3.2%5 $19.10 4/30/20223,430,000 shares $62.94 million +7.2%3.4%5.5 $18.35 4/15/20223,200,000 shares $67.36 million +12.7%3.2%5 $21.05 3/31/20222,840,000 shares $61.00 million -4.7%2.8%4.1 $21.48 3/15/20222,980,000 shares $56.71 million +7.2%3.0%4.1 $19.03 2/28/20222,780,000 shares $70.45 million -5.4%2.8%3.6 $25.34 2/15/20222,940,000 shares $78.38 million -3.3%2.9%3.7 $26.66 1/31/20223,040,000 shares $81.26 million -5.0%3.0%2.9 $26.73 1/15/20223,200,000 shares $88.93 million -3.6%3.2%3.1 $27.79 12/31/20213,320,000 shares $94.35 million +9.9%3.3%3.4 $28.42 12/15/20213,020,000 shares $83.32 million +69.7%3.0%3.1 $27.59 11/30/20211,780,000 shares $47.94 million -33.8%1.8%1.5 $26.93Why Trump’s “Smart Dollar” could rewrite the rules (Ad)MUST SEE: Donald Trump's Radical Overhaul of the U.S. Dollar Congress just approved President Trump's latest plans for the dollar – and they're so bold that one central bank chair says we haven't seen anything like it in almost a century. Our Wall Street insider says it's the start of a once-in-a-lifetime investing opportunity, IF you act now.Get the three steps to take this month to put yourself on the right side of this $30 trillion money 11/15/20212,690,000 shares $102.33 million +6.8%3.0%2.3 $38.04 10/29/20212,520,000 shares $104.10 million -18.7%2.9%2.7 $41.31 10/15/20213,100,000 shares $117.30 million +12.3%3.5%3.4 $37.84 9/30/20212,760,000 shares $91.36 million +29.6%3.2%3.1 $33.10 9/15/20212,130,000 shares $74.76 million +6.5%2.5%2.5 $35.10 8/31/20212,000,000 shares $67.18 million +30.7%3.2%3 $33.59 8/13/20211,530,000 shares $44.23 million -12.6%2.5%3.4 $28.91 7/30/20211,750,000 shares $47.62 million -1.7%2.8%3.8 $27.21 7/15/20211,780,000 shares $43.54 million -1.1%3.3%3.8 $24.46 6/30/20211,800,000 shares $50.99 million -14.3%3.3%3.8 $28.33 6/15/20212,100,000 shares $56.07 million -7.9%3.9%3.5 $26.70 5/28/20212,280,000 shares $59.99 million +2.7%4.2%3.4 $26.31 5/14/20212,220,000 shares $56.90 million +5.7%4.1%3.1 $25.63 4/30/20212,100,000 shares $69.95 million +10.5%3.9%3 $33.31 4/15/20211,900,000 shares $53.26 million -31.7%3.5%2.9 $28.03 3/31/20212,780,000 shares $73.39 million +79.4%5.1%4.2 $26.40 3/15/20211,550,000 shares $42.53 million -7.7%3.4%2.5 $27.44 2/26/20211,680,000 shares $55.39 million +19.2%4.1%1.7 $32.97 2/12/20211,410,000 shares $54.99 million -3.4%3.4%1.4 $39.00 1/29/20211,460,000 shares $50.43 million -4.6%4.8%1.2 $34.54 1/15/20211,530,000 shares $52.52 million No Change5.0%1.1 $34.33 CERT Short Interest - Frequently Asked Questions What is Certara's current short interest? Short interest is the volume of Certara shares that have been sold short but have not yet been closed out or covered. As of August 15th, investors have sold 12,600,000 shares of CERT short. 10.82% of Certara's shares are currently sold short. Learn More on Certara's current short interest. What is a good short interest ratio for Certara? 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. CERT shares currently have a short interest ratio of 8.0. Learn More on Certara's short interest ratio. Which institutional investors are shorting Certara? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Certara: Group One Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Certara? 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. 10.82% of Certara's floating shares are currently sold short. Is Certara's short interest increasing or decreasing? Certara saw a increase in short interest in August. As of August 15th, there was short interest totaling 12,600,000 shares, an increase of 12.6% from the previous total of 11,190,000 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. What is Certara's float size? Certara currently has issued a total of 160,620,000 shares. Some of Certara'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. Certara currently has a public float of 116,470,000 shares. How does Certara's short interest compare to its competitors? 10.82% of Certara's shares are currently sold short. Here is how the short interest of companies in the industry of "computer software" compare to Certara: Kyndryl Holdings, Inc. (6.54%), Varonis Systems, Inc. (8.55%), GDS Holdings (4.47%), CCC Intelligent Solutions Holdings Inc. (7.13%), Waystar Holding Corp. (4.40%), Confluent, Inc. (7.27%), Clearwater Analytics Holdings, Inc. (4.43%), UiPath, Inc. (13.45%), Global-e Online Ltd. (5.49%), SentinelOne, Inc. (4.98%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Lucid Group, Inc. ($8.00 billion), Spotify Technology ($5.48 billion), AppLovin Corporation ($5.11 billion), Reddit Inc. ($5.02 billion), Coinbase Global, Inc. ($3.99 billion), Charter Communications, Inc. ($3.89 billion), Live Nation Entertainment, Inc. ($3.18 billion), Seagate Technology Holdings PLC ($2.59 billion), ResMed Inc. ($2.55 billion), and Rocket Lab Corporation ($2.52 billion). View all of the most shorted stocks. What does it mean to sell short Certara stock? Short selling CERT is an investing strategy that aims to generate trading profit from Certara as its price is falling. CERT shares are trading down $0.18 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 Certara? A short squeeze for Certara 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 CERT, which in turn drives the price of the stock up even further. How often is Certara'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 CERT, twice per month. The most recent reporting period available is August, 15 2025. More Short Interest Resources from MarketBeat Related Companies KD Short Interest Data VRNS Short Interest Data GDS Short Interest Data CCCS Short Interest Data WAY Short Interest Data CFLT Short Interest Data CWAN Short Interest Data PATH Short Interest Data GLBE Short Interest Data S 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:CERT) was last updated on 9/3/2025 by MarketBeat.com Staff From Our PartnersHow “Trump’s New Dollar” Could Impact Your WealthPresident Trump just signed a game-changing law… That could soon upgrade the U.S. dollar in your checking a...Brownstone Research | SponsoredForget Tesla — This Tiny AI Stock Is Musk’s Real PlayWhile Wall Street focused on Tesla’s earnings, Elon Musk was quietly building a supercomputer so powerful it c...Behind the Markets | SponsoredWarren Buffett Issues Cryptic Warning on U.S. DollarImagine a bull market so powerful, every single investor became a millionaire. 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