CarMax (KMX) Short Interest Ratio & Short Volume $68.42 +1.22 (+1.82%) Closing price 03:59 PM EasternExtended Trading$68.83 +0.41 (+0.60%) As of 06:12 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 AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock CarMax Short Interest DataCarMax (KMX) has a short interest of 12.41 million shares, representing 8.19% of the float (the number of shares available for trading by the public). This marks a 12.10% increase in short interest from the previous month. The short interest ratio (days to cover) is 3.9, indicating that it would take 3.9 days of the average trading volume of 2.27 million shares to cover all short positions.Current Short Interest12,410,000 sharesPrevious Short Interest11,070,000 sharesChange Vs. Previous Month+12.10%Dollar Volume Sold Short$841.89 millionShort Interest Ratio3.9 Days to CoverLast Record DateMay 15, 2025Outstanding Shares152,684,000 sharesFloat Size151,580,000 sharesShort Percent of Float8.19%Today's Trading Volume4,349,230 sharesAverage Trading Volume2,272,704 sharesToday's Volume Vs. Average191% Short Selling CarMax? Sign up to receive the latest short interest report for CarMax and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartKMX Short Interest Over TimeKMX Days to Cover Over TimeKMX Percentage of Float Shorted Over Time CarMax Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 5/15/202512,410,000 shares $841.89 million +12.1%8.2%3.9 $67.84 4/30/202511,070,000 shares $715.79 million +2.1%7.3%3.8 $64.66 4/15/202510,840,000 shares $733.34 million -10.7%7.1%4 $67.65 3/31/202512,140,000 shares $947.85 million +2.5%7.9%5.5 $78.08 3/15/202511,840,000 shares $827.46 million +4.7%7.7%6.3 $69.89 2/28/202511,310,000 shares $938.16 million -3.5%7.4%6.1 $82.95 2/15/202511,720,000 shares $1.04 billion -2.8%7.7%6.4 $88.91 1/31/202512,060,000 shares $1.03 billion -7.0%7.9%6.4 $85.64 1/15/202512,970,000 shares $1.04 billion -1.5%8.5%7 $80.29 12/31/202413,170,000 shares $1.08 billion -0.8%8.6%7.1 $81.76 Get the Latest News and Ratings for KMX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for CarMax and its competitors with MarketBeat's FREE daily newsletter. 12/15/202413,280,000 shares $1.15 billion -11.8%8.6%6.6 $86.26 11/30/202415,050,000 shares $1.26 billion -3.4%9.8%7.7 $83.97 11/15/202415,580,000 shares $1.22 billion +0.6%10.1%8.5 $78.03 10/31/202415,490,000 shares $1.12 billion -11.4%10.0%9.1 $72.38 10/15/202417,490,000 shares $1.29 billion +1.8%11.3%9.9 $73.67 9/30/202417,180,000 shares $1.33 billion +8.1%11.1%9.3 $77.38 9/15/202415,890,000 shares $1.25 billion -5.8%10.2%9.1 $78.78 8/31/202416,870,000 shares $1.43 billion -2.0%10.9%9.3 $84.55 8/15/202417,220,000 shares $1.37 billion -4.7%11.1%9.5 $79.84 7/31/202418,060,000 shares $1.52 billion -3.1%11.6%9.4 $84.44 7/15/202418,630,000 shares $1.53 billion +3.1%12.0%9.3 $82.00 6/30/202418,070,000 shares $1.33 billion -7.6%11.6%7.8 $73.34 6/15/202419,560,000 shares $1.37 billion -0.1%12.5%8.5 $69.91 5/31/202419,580,000 shares $1.38 billion -0.3%12.5%9.3 $70.28 5/15/202419,640,000 shares $1.46 billion -0.3%12.5%9.5 $74.35 4/30/202419,690,000 shares $1.34 billion -6.6%12.6%9.6 $67.97 4/15/202421,090,000 shares $1.46 billion +10.3%13.5%10.5 $69.46 3/31/202419,120,000 shares $1.67 billion +4.1%12.2%11.1 $87.11 3/15/202418,360,000 shares $1.48 billion -3.7%11.7%10.3 $80.74 2/29/202419,060,000 shares $1.51 billion +4.5%12.1%9.7 $79.00 2/15/202418,240,000 shares $1.36 billion -3.1%11.6%9.1 $74.33 1/31/202418,830,000 shares $1.34 billion +2.2%12.0%9.1 $71.18 1/15/202418,420,000 shares $1.28 billion +0.1%11.7%8.9 $69.59 12/31/202318,410,000 shares $1.41 billion -0.2%11.7%8.9 $76.74 12/15/202318,450,000 shares $1.38 billion -4.1%11.7%7.5 $74.71 11/30/202319,240,000 shares $1.23 billion +9.4%12.2%9 $63.92 11/15/202317,590,000 shares $1.19 billion +6.3%11.1%8.5 $67.93 10/31/202316,550,000 shares $1.01 billion -0.6%10.5%8.3 $61.09 10/15/202316,650,000 shares $1.14 billion -1.7%10.5%9 $68.23 9/30/202316,940,000 shares $1.20 billion -6.3%10.7%9.8 $70.73Trump set to Boost Social Security Checks by 400%? (Ad)If you're collecting or planning to collect social security... You should see this presentation about President Trump's Executive Order #14196. Legendary investor Louis Navellier believes it could soon not only save Social Security from collapse... But BOOST benefits for millions of retirees by up to 400%. No wonder the financial times called this new initiative...Click here to see the details because the stakes couldn't be any higher. 9/15/202318,070,000 shares $1.50 billion -1.2%11.5%12.9 $83.24 8/31/202318,290,000 shares $1.49 billion +4.6%11.6%11.4 $81.68 8/15/202317,490,000 shares $1.49 billion -3.3%11.1%10.5 $85.19 7/31/202318,090,000 shares $1.49 billion +0.8%11.5%10.8 $82.61 7/15/202317,950,000 shares $1.50 billion -4.9%11.4%10.1 $83.40 6/30/202318,880,000 shares $1.58 billion -12.2%12.0%8.9 $83.70 6/15/202321,510,000 shares $1.74 billion -4.9%13.7%10 $80.85 5/31/202322,620,000 shares $1.63 billion +2.4%14.4%10.4 $72.21 5/15/202322,100,000 shares $1.58 billion -2.9%14.0%10.2 $71.70 4/30/202322,770,000 shares $1.59 billion -1.3%14.5%10.4 $70.03 4/15/202323,070,000 shares $1.60 billion -0.1%14.7%9.9 $69.46 3/31/202323,090,000 shares $1.48 billion +0.1%14.7%9.2 $64.28 3/15/202323,070,000 shares $1.36 billion -1.7%14.7%8.3 $59.13 2/28/202323,470,000 shares $1.62 billion +6.0%14.9%8.9 $69.04 2/15/202322,140,000 shares $1.67 billion -2.6%14.1%8.5 $75.55 1/31/202322,720,000 shares $1.60 billion +4.1%14.5%8.2 $70.45 1/15/202321,820,000 shares $1.42 billion +4.4%13.9%7.9 $65.00 12/30/202220,910,000 shares $1.27 billion +13.2%13.3%7.6 $60.89 12/15/202218,480,000 shares $1.21 billion +5.9%11.8%6.1 $65.39 11/30/202217,450,000 shares $1.21 billion +10.0%11.1%7.3 $69.36 11/15/202215,870,000 shares $1.15 billion +18.3%10.1%6.8 $72.66 10/31/202213,420,000 shares $845.59 million -4.7%8.5%6.1 $63.01 10/15/202214,080,000 shares $847.62 million +8.8%9.0%7.1 $60.20 9/30/202212,940,000 shares $854.30 million -2.8%8.2%7.7 $66.02 9/15/202213,310,000 shares $1.13 billion +0.7%8.4%10.4 $84.98 8/31/202213,220,000 shares $1.17 billion +2.8%8.4%9.9 $88.44 8/15/202212,860,000 shares $1.30 billion +1.7%8.1%9.4 $101.42 7/31/202212,650,000 shares $1.26 billion -5.7%8.0%8.1 $99.54 7/15/202213,410,000 shares $1.23 billion +8.8%8.5%7.8 $91.55 6/30/202212,330,000 shares $1.12 billion +9.1%7.8%6.2 $90.48 6/15/202211,300,000 shares $1.03 billion +1.5%7.1%5.5 $91.54 5/31/202211,130,000 shares $1.10 billion -15.5%7.0%5.8 $99.27 5/15/202213,170,000 shares $1.21 billion -1.9%8.2%6.8 $91.66 4/30/202213,430,000 shares $1.15 billion -5.4%8.4%7.4 $85.78 4/15/202214,200,000 shares $1.30 billion +5.4%8.9%7.9 $91.79 3/31/202213,470,000 shares $1.30 billion +22.7%8.4%8.4 $96.48 3/15/202210,980,000 shares $1.11 billion +8.2%6.8%7 $100.92 2/28/202210,150,000 shares $1.11 billion +7.4%6.3%6.8 $109.33 2/15/20229,450,000 shares $1.07 billion +25.2%5.9%6.7 $113.32 1/31/20227,550,000 shares $839.33 million +25.8%4.7%5.7 $111.17 1/15/20226,000,000 shares $680.40 million +14.3%3.7%4.7 $113.40 12/31/20215,250,000 shares $683.71 million +3.6%3.3%4.9 $130.23 12/15/20215,070,000 shares $719.89 million +4.1%3.1%4.3 $141.99 11/30/20214,870,000 shares $687.89 million +0.6%3.0%4.5 $141.25 11/15/20214,840,000 shares $724.16 million -4.7%3.0%4.6 $149.62 10/29/20215,080,000 shares $695.55 million +5.2%3.2%4.8 $136.92 10/15/20214,830,000 shares $660.70 million +9.8%3.0%4.9 $136.79 9/30/20214,400,000 shares $563.02 million -15.7%2.7%4.4 $127.96 9/15/20215,220,000 shares $714.15 million -3.9%3.2%5.3 $136.81 8/31/20215,430,000 shares $679.89 million +2.3%3.4%5.4 $125.21Trump set to Boost Social Security Checks by 400%? (Ad)If you're collecting or planning to collect social security... You should see this presentation about President Trump's Executive Order #14196. Legendary investor Louis Navellier believes it could soon not only save Social Security from collapse... But BOOST benefits for millions of retirees by up to 400%. No wonder the financial times called this new initiative...Click here to see the details because the stakes couldn't be any higher. 8/13/20215,310,000 shares $680.16 million +5.4%3.3%5.1 $128.09 7/30/20215,040,000 shares $675.11 million -13.4%3.1%4.5 $133.95 7/15/20215,820,000 shares $763.93 million -9.1%3.6%5.1 $131.26 6/30/20216,400,000 shares $826.56 million +25.5%3.9%5.6 $129.15 6/15/20215,100,000 shares $606.03 million +20.3%3.1%4.5 $118.83 5/28/20214,240,000 shares $488.41 million +19.1%2.6%3.9 $115.19 5/14/20213,560,000 shares $431.15 million -5.6%2.2%3.1 $121.11 4/30/20213,770,000 shares $502.13 million -5.8%2.3%3.4 $133.19 4/15/20214,000,000 shares $518.48 million -1.5%2.5%3.4 $129.62 3/31/20214,060,000 shares $551.47 million -20.7%2.5%3.1 $135.83 3/15/20215,120,000 shares $684.85 million -9.2%3.2%3.4 $133.76 2/26/20215,640,000 shares $670.71 million -2.1%3.5%3.7 $118.92 2/12/20215,760,000 shares $730.60 million -17.7%3.6%3.9 $126.84 1/29/20217,000,000 shares $849.03 million -26.1%4.3%4.6 $121.29 1/15/20219,470,000 shares $1.01 billion -3.2%5.9%6.1 $106.35 12/31/20209,780,000 shares $925.38 million -0.2%6.0%6.7 $94.62 12/15/20209,800,000 shares $906.89 million +3.5%6.0%5.9 $92.54 11/30/20209,470,000 shares $903.15 million +2.7%5.8%6.4 $95.37 11/15/20209,220,000 shares $880.33 million -2.4%5.6%6.3 $95.48 10/30/20209,450,000 shares $833.58 million -1.3%5.8%6.6 $88.21 10/15/20209,570,000 shares $876.42 million -4.4%5.9%6.7 $91.58 9/30/202010,010,000 shares $920.02 million -8.2%6.1%7.3 $91.91 9/15/202010,900,000 shares $1.14 billion -8.0%6.7%8.7 $105.01 8/31/202011,850,000 shares $1.27 billion -7.2%7.3%9.2 $106.93 8/14/202012,770,000 shares $1.33 billion +1.2%7.9%9.1 $104.35 7/31/202012,620,000 shares $1.22 billion -5.6%7.8%8.5 $96.97 7/15/202013,370,000 shares $1.27 billion -3.3%8.2%8 $95.04 6/30/202013,820,000 shares $1.24 billion -4.0%8.5%7.2 $89.55 6/15/202014,400,000 shares $1.34 billion -5.3%8.9%6.6 $92.83 KMX Short Interest - Frequently Asked Questions What is CarMax's current short interest? Short interest is the volume of CarMax shares that have been sold short but have not yet been covered or closed out. As of May 15th, traders have sold 12,410,000 shares of KMX short. 8.19% of CarMax's shares are currently sold short. Learn More on CarMax's current short interest. What is a good short interest ratio for CarMax? 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. KMX shares currently have a short interest ratio of 4.0. Learn More on CarMax's short interest ratio. Which institutional investors are shorting CarMax? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of CarMax: Quaker Wealth Management LLC, Jane Street Group LLC, Parallax Volatility Advisers L.P., Millennium Management LLC, Cubist Systematic Strategies LLC, Twin Tree Management LP, PEAK6 LLC, Walleye Trading LLC, Walleye Capital LLC, Compound Planning Inc., Arrowpoint Investment Partners Singapore Pte. Ltd., Portman Square Capital LLP, and Wealth Enhancement Advisory Services LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for CarMax? 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. 8.19% of CarMax's floating shares are currently sold short. Is CarMax's short interest increasing or decreasing? CarMax saw a increase in short interest in the month of May. As of May 15th, there was short interest totaling 12,410,000 shares, an increase of 12.1% from the previous total of 11,070,000 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 CarMax's float size? CarMax currently has issued a total of 152,684,000 shares. Some of CarMax'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. CarMax currently has a public float of 151,580,000 shares. How does CarMax's short interest compare to its competitors? 8.19% of CarMax's shares are currently sold short. Here is how the short interest of companies compare to CarMax: Penske Automotive Group, Inc. (6.64%), Lithia Motors, Inc. (5.75%), AutoNation, Inc. (5.58%), Group 1 Automotive, Inc. (7.79%), Asbury Automotive Group, Inc. (5.18%), Advance Auto Parts, Inc. (18.36%), Sonic Automotive, Inc. (12.66%), Monro, Inc. (15.25%), America's Car-Mart, Inc. (15.83%), O'Reilly Automotive, Inc. (1.55%), 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 ($29.20 billion), Strategy Incorporated ($10.88 billion), iShares 20+ Year Treasury Bond ETF ($10.04 billion), Capital One Financial Co. ($5.51 billion), Charter Communications, Inc. ($5.00 billion), Super Micro Computer, Inc. ($4.43 billion), Apollo Global Management, Inc. ($4.02 billion), Hims & Hers Health, Inc. ($3.65 billion), VanEck Semiconductor ETF ($3.27 billion), and Coinbase Global, Inc. ($3.10 billion). View all of the most shorted stocks. What does it mean to sell short CarMax stock? Short selling KMX is an investing strategy that aims to generate trading profit from CarMax as its price is falling. KMX shares are trading up $1.22 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 CarMax? A short squeeze for CarMax 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 KMX, which in turn drives the price of the stock up even further. How often is CarMax'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 KMX, twice per month. The most recent reporting period available is May, 15 2025. More Short Interest Resources from MarketBeat Related Companies PAG Short Interest Data LAD Short Interest Data AN Short Interest Data GPI Short Interest Data ABG Short Interest Data AAP Short Interest Data SAH Short Interest Data MNRO Short Interest Data CRMT Short Interest Data ORLY 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 (NYSE:KMX) was last updated on 6/10/2025 by MarketBeat.com Staff From Our PartnersTrump’s Exec Order #14154 could be a “Millionaire-Maker”Former Presidential Advisor, Jim Rickards, says Trump could “rewire our economy and hand millions of Americans...Paradigm Press | SponsoredBanks aren’t ready for this altcoin—are you?While everyone's distracted by Bitcoin's moves, a stealth revolution is underway. One altcoin is quietly po...Crypto 101 Media | SponsoredElon’s NEXT Big IPO?Cancel your internet TODAY!? 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But did you know his successor ha...Altimetry | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added five stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding CarMax, Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share CarMax With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. Advanced Stock Screeners and Research Tools Use our seven stock screeners to find suitable stocks. 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