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CarMaxMEX:KMX 63 ROC (Joel Greenblatt) % is 22.74% as of May. 2026, which is 2% below its 10-year median of 23.22. GuruFocus rates MEX:KMX with a GF Score™ of 63/100 and a GF Value™ of MXN1,345.22 (Modestly Undervalued). The stock has 5 warning signs investors should review. Among 1,333 Vehicles & Parts companies, CarMax ranks better than 59.79% on this metric.
Joel Greenblatt defined Return on Capital differently in his book The Little Book That Still Beats the Market (Little Books. Big Profits). He defines ROC (Joel Greenblatt) % as EBIT divided by the total of Property, Plant and Equipment and net working capital. CarMax's annualized ROC (Joel Greenblatt) % for the quarter that ended in May. 2026 was 22.74%.
The historical rank and industry rank for CarMax's ROC (Joel Greenblatt) % or its related term are showing as below:
MEX:KMX'
s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: 13.24 Med: 23.22 Max: 29.69
Current: 15.33
During the past 13 years, CarMax's highest ROC (Joel Greenblatt) % was 29.69%. The lowest was 13.24%. And the median was 23.22%.
MEX:KMX's ROC (Joel Greenblatt) % is ranked better than 59.79% of 1333
companies
in the Vehicles & Parts industry
Industry Median: 11.97
vs MEX:KMX: 15.33
CarMax's 5-Year average Growth Rate of ROC (Joel Greenblatt) % was -4.80% per year.
The way Joel Greenblatt defines Return on Capital is a more accurate measure of how efficiently the company generates returns onthe capital actually invested in the business. EBIT is used instead of net income because the tax and interest payment may be affected by factors other than the core business operation. Intangible assets are not included in the calculation because they don't need to be replaced.
The historical data trend for CarMax's ROC (Joel Greenblatt) % can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
MEX:KMX vs LAD, AN, ALTB: ROC (Joel Greenblatt) % Comparison
For the Auto & Truck Dealerships subindustry, CarMax's ROC (Joel Greenblatt) %, along with its competitors' market caps and ROC (Joel Greenblatt) % data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
CarMax ROC (Joel Greenblatt) % vs Vehicles & Parts Industry
For the Vehicles & Parts industry and Consumer Cyclical sector, CarMax's ROC (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where CarMax's ROC (Joel Greenblatt) % falls into.
Joel Greenblatt defined Return on Capital differently in his book The Little Book That Still Beats the Market (Little Books. Big Profits) . He defines Return on Capital as follows:
EBIT stands for Earnings Before Interest and Taxes.
Fixed Assets are also known as non-current assets. They include the Property, Plant and Equipment that the firm needs in its operation.
GuruFocus calculates net working capital as: (Accounts Receivable + Total Inventories + Other Current Assets) - (Accounts Payable & Accrued Expense + Deferred Revenue + Other Current Liabilities). We're trying to account for OPERATING assets and liabilities (part of daily business) when calculating working capital. Cash and marketable securities are considered NON-OPERATING assets and are not included in calculation. We will also back out all interest bearing debt, short term debt and the portion of long term debt that is due in the current period from the current liabilities. This debt will be considered when computing cost of capital and it would be inappropriate to count it twice.
Note:
The EBIT data used here is four times the quarterly (May. 2026) EBIT data.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
What does a ROC (Joel Greenblatt) % of 22.74% mean?
CarMax (MEX:KMX) has a ROC (Joel Greenblatt) % of 22.74% as of May. 2026. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on CarMax and its competitors. This is near median its historical median of 23.22. Over the past decade, CarMax's ROC (Joel Greenblatt) % has ranged from 13.24 to 29.69. According to the industry distribution chart, CarMax ranks #536 out of 1333 companies in the Vehicles & Parts industry, placing it in the top 40.2%.
Is CarMax's ROC (Joel Greenblatt) % too high?
CarMax's current ROC (Joel Greenblatt) % of 22.74% is near median its 10-year median of 23.22. Over the past 10 years, this metric has ranged from a low of 13.24 to a high of 29.69. The Vehicles & Parts industry median ROC (Joel Greenblatt) % is 11.97. CarMax's value of 22.74% is 90% above this industry median. Based on the distribution chart, CarMax ranks #536 out of 1333 companies in the Vehicles & Parts industry, which is above the industry midpoint. Overall, CarMax has a GF Score™ of 63/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does CarMax's ROC (Joel Greenblatt) % compare to LAD and AN?
According to the Vehicles & Parts industry distribution chart, CarMax ranks #536 out of 1333 companies for ROC (Joel Greenblatt) %. This puts CarMax in the upper half of its industry. The industry median ROC (Joel Greenblatt) % is 11.97. CarMax's value of 22.74% is 90% above this benchmark. Historically, CarMax's own ROC (Joel Greenblatt) % has ranged from 13.24 to 29.69 over the past decade. While the company's 10-year median is 23.22 vs. the industry median of 11.97, CarMax has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good ROC (Joel Greenblatt) % for a Vehicles & Parts company?
The median ROC (Joel Greenblatt) % among Vehicles & Parts companies is 11.97, based on 1,333 companies in the industry. Companies in the top quartile (top 25%) have a ROC (Joel Greenblatt) % significantly above this median, while those in the bottom quartile fall well below. However, ROC (Joel Greenblatt) % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. CarMax's current ROC (Joel Greenblatt) % of 22.74% is 90% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high ROC (Joel Greenblatt) % mean?
A high ROC (Joel Greenblatt) % can signal that a stock is expensive relative to its fundamentals. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on CarMax and its competitors. For the Vehicles & Parts industry, the median ROC (Joel Greenblatt) % is 11.97 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. CarMax's current ROC (Joel Greenblatt) % is 22.74%, which is near median its own 10-year median of 23.22. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is CarMax stock overvalued right now?
Based on GuruFocus' analysis, CarMax (MEX:KMX) is currently considered Modestly Undervalued. The stock's GF Value™ is MXN1,345.22, compared to a current price of MXN959.00 — trading 28.7% below its estimated fair value. The current ROC (Joel Greenblatt) % is 22.74%, which is near median its 10-year median of 23.22 and 90% above the Vehicles & Parts industry median of 11.97. CarMax's overall GF Score™ is 63/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is ROC (Joel Greenblatt) % calculated?
ROC (Joel Greenblatt) % is calculated from a company's financial statements. For CarMax (MEX:KMX), the current ROC (Joel Greenblatt) % is 22.74% as of May. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is CarMax (MEX:KMX) Overvalued in 2026?
Based on GuruFocus' analysis, CarMax stock appears to be undervalued.
The current stock price of MXN959.00 is trading 28.7% below its estimated GF Value™ of MXN1,345.22.
GuruFocus considers CarMax to be Modestly Undervalued.
Key valuation signals for MEX:KMX:
ROC (Joel Greenblatt) %: 22.74% (near median its 10-year median of 23.22)
GF Value™: MXN1,345.22 vs. price of MXN959.00 (28.7% below fair value)
Industry Position: 90% above the Vehicles & Parts median (#536 of 1333)
No single metric tells the full story. See the MEX:KMX stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
CarMax sells, finances, and services used and new cars through a chain of over about 260 retail stores. It was formed in 1993 as a unit of Circuit City and spun off into an independent company in late 2002. Used-vehicle sales were 80% of fiscal 2026 revenue and wholesale about 17%, with the remaining portion composed of extended service plans and repair. In fiscal 2026, the company retailed and wholesaled 780,684 and 538,203 used vehicles, respectively. CarMax is the largest used-vehicle retailer in the US, but still estimates that it had only about 3.6% US market share of vehicles zero to 10 years old in calendar 2025. CarMax is based in Richmond, Virginia.
63GF Score
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