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CarMax (KMX) Short Interest Ratio & Short Volume

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$46.09 +2.16 (+4.92%)
Closing price 06/3/2026 03:58 PM Eastern
Extended Trading
$46.40 +0.31 (+0.67%)
As of 05:46 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 Massive. Learn more.
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CarMax Short Interest Overview

As of May 15, 2026, CarMax (KMX) had a short interest of 17.11 million shares sold short, representing 12.27% of the public float. This marks a 13.90% increase in short interest since the prior report. The short interest ratio (days to cover) is 6.4, meaning it would take 6.4 days of the average trading volume of 2.74 million shares to cover all short positions.

Current Short Interest
17,105,933 shares
Previous Short Interest
15,018,095 shares
Change Vs. Previous Month
13.90%
Dollar Volume Sold Short
$632.73 million
Short Interest Ratio
6.4 Days to Cover
Last Record Date
May 15, 2026
Outstanding Shares
141,820,000 shares
Short Percent of Float
12.27%
Today's Trading Volume
5,093,008 shares
Average Trading Volume
2,735,389 shares
Today's Volume Vs. Average
186%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

KMX Short Interest Over Time

KMX Days to Cover Over Time

KMX Percentage of Float Shorted Over Time

CarMax Tesla Short Interest History & Recent Changes

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Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
5/15/202617,105,933 shares $632.73 million +13.9%12.3%6.44 $36.99
4/30/202615,018,095 shares $589.79 million +5.3%10.8%4.9 $39.27
4/15/202614,261,257 shares $576.64 million -5.5%10.2%3.14 $40.43
3/31/202615,085,743 shares $627.88 million -10.8%10.8%4.9 $41.62
3/13/202616,912,585 shares $707.99 million +12.6%12.1%5.26 $41.86
2/27/202615,016,886 shares $647.05 million +3.6%10.8%4.26 $43.09
2/13/202614,488,831 shares $599.52 million +1.1%10.4%4.43 $41.38
1/30/202614,338,051 shares $638.16 million -13.9%10.3%4.5 $44.51
1/15/202616,653,471 shares $809.97 million +6.5%11.9%3.94 $48.64
12/31/202515,631,463 shares $603.84 million +18.0%11.2%3.19 $38.63
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12/15/202513,249,828 shares $542.39 million -12.4%9.2%3.99 $40.94
11/28/202515,132,799 shares $579.51 million +3.1%10.5%3.47 $38.30
11/14/202514,675,372 shares $504.50 million -11.8%10.2%1.83 $34.38
10/31/202516,629,871 shares $698.07 million +14.9%11.5%2.51 $41.98
10/15/202514,470,000 shares $641.98 million +1.1%9.9%3.8 $44.37
9/30/202514,310,000 shares $642.23 million -4.2%9.8%3.9 $44.88
9/15/202514,940,000 shares $902.30 million +0.7%10.0%5 $60.40
8/31/202514,840,000 shares $910.18 million -2.1%9.9%4.6 $61.33
8/15/202515,160,000 shares $875.64 million +4.5%10.2%4.5 $57.76
7/31/202514,510,000 shares $820.11 million +3.5%9.7%4.2 $56.52
7/15/202514,020,000 shares $884.12 million -2.4%9.4%4.1 $63.06
6/30/202514,360,000 shares $965.85 million +4.5%9.6%3.7 $67.26
6/15/202513,740,000 shares $890.87 million +6.8%9.1%3.5 $64.84
5/31/202512,860,000 shares $828.57 million +3.6%8.5%3.7 $64.43
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
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
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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 $70.73
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
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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 $125.21
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

KMX Short Interest - Frequently Asked Questions

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, investors have sold 17,105,933 shares of KMX short. 12.27% of CarMax's shares are currently sold short. Learn More on CarMax's current short interest.

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 6.4. Learn More on CarMax's short interest ratio.

As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of CarMax: PEAK6 LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.

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. 12.27% of CarMax's floating shares are currently sold short.

CarMax saw a increase in short interest in the month of May. As of May 15th, there was short interest totaling 17,105,933 shares, an increase of 13.9% from the previous total of 15,018,095 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.

12.27% of CarMax's shares are currently sold short. Here is how the short interest of companies compare to CarMax: Tesla, Inc. (2.50%), Asbury Automotive Group, Inc. (6.43%), AutoNation, Inc. (6.63%), Carvana Co. (7.85%), Lithia Motors, Inc. (10.98%), Penske Automotive Group, Inc. (7.62%), Group 1 Automotive, Inc. (7.89%), Advance Auto Parts, Inc. (18.88%), Sonic Automotive, Inc. (12.54%), Monro Muffler Brake, Inc. (23.71%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($80.71 billion), Invesco QQQ ($47.96 billion), iShares Russell 2000 ETF ($22.13 billion), Western Digital Corporation ($14.35 billion), Sandisk Corporation ($12.86 billion), Salesforce Inc. ($10.89 billion), Nebius Group N.V. ($9.92 billion), SPDR S&P Biotech ETF ($9.72 billion), Lumentum Holdings Inc. ($8.89 billion), and iShares 20+ Year Treasury Bond ETF ($8.18 billion). View all of the most shorted stocks.

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 $2.16 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.

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.

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 2026.

Understanding short interest metrics can help you assess how traders are positioning around a stock like KMX:

  • Shares Sold Short: The total number of shares that have been sold by short sellers but have not yet been covered or closed out. A high number may indicate bearish sentiment.
  • Short Float: The percentage of a company’s publicly available shares (or "float") that are sold short. A higher short float suggests a greater portion of the stock is being bet against.
  • Days to Cover (Short Interest Ratio): This estimates how many days it would take short sellers to cover their positions, based on average daily trading volume. Higher values can signal potential for a short squeeze if buying pressure increases.

These metrics are often used by traders to gauge sentiment, volatility risk, and the potential for price movements based on short covering activity.


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This page (NYSE:KMX) was last updated on 6/4/2026 by MarketBeat.com Staff.
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