O'Reilly Automotive (STU:OM6) Shares Outstanding (Basic Average): 839 Mil (As of Mar. 2026)


STU:OM6 O'Reilly Automotive Inc STU:OM6
95 GF Score
Price €76.79
GF Value €83.17
Valuation Fairly Valued
! 3 Warning Signs
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What is O'Reilly Automotive Shares Outstanding (Basic Average)?

O'Reilly Automotive STU:OM6 +2.47% 95 Shares Outstanding (Basic Average) is 839 Mil as of Mar. 2026. GuruFocus rates STU:OM6 with a GF Score™ of 95/100 and a GF Value™ of €83.17 (Fairly Valued). The stock has 3 warning signs investors should review.

Shares outstanding are shares that have been authorized, issued, and purchased by investors and are held by them. O'Reilly Automotive's average basic shares outstanding for the quarter that ended in Mar. 2026 was 839 Mil.

O'Reilly Automotive  (STU:OM6) Shares Outstanding (Basic Average) Explanation

A company may buy back shares or issue shares in any fiscal period. If a company buys back shares, we should observe that the total number of shares decline. If the company issues new shares, the number of shares outstanding increases.

Be Aware

Usually the presence of treasury shares and a history of buyback are good indicators that company has competitive advantage. But studies have shown that companies usually buy back at wrong time. Buying back shares below its intrinsic value increases value for remaining shareholders. Buying back overvalued shares destroys value for existing shareholders.

O'Reilly Automotive Shares Outstanding (Basic Average) Related Terms

O'Reilly Automotive Shares Outstanding (Basic Average) Historical Data

* Premium members only.

The historical data trend for O'Reilly Automotive's Shares Outstanding (Basic Average) 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.

O'Reilly Automotive Shares Outstanding (Basic Average) Chart

O'Reilly Automotive Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shares Outstanding (Basic Average)
Get a 7-Day Free Trial Premium Member Only Premium Member Only 1,034.51 965.58 907.13 875.08 851.47

O'Reilly Automotive Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Shares Outstanding (Basic Average) Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 859.56 854.00 848.29 844.16 838.58
STU:OM6
95GF Score
O'Reilly Automotive Inc STU:OM6
Shares Outstanding (Basic Average) is just one metric. See GF Score™, valuation, warning signs, and more.
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O'Reilly Automotive Shares Outstanding (Basic Average) Calculation

Shares outstanding are shares that have been authorized, issued, and purchased by investors and are held by them. They have voting rights and represent ownership in the corporation by the person that holds the shares. They should be distinguished from treasury shares, which are shares held by the corporation itself, having no exercisable rights.

Shares outstanding can be calculated as either basic or fully diluted. The fully diluted shares outstanding count includes diluting securities, such as options, warrants or convertibles.

Please note: GuruFocus named Shares Outstanding (EOP) is the shares for that exact time point. It is usually used to calculate balance sheet related items, such as Book Value per Share, etc. While Shares Outstanding (Diluted Average) and Shares Outstanding (Basic Average) are the weighted average shares over a period of time (a year, a quarter, or so). They are usually used to calculate income statement or cashflow statement related items, such as Earnings per Share (Diluted), etc.

What does a Shares Outstanding (Basic Average) of 839 Mil mean?
O'Reilly Automotive (STU:OM6) has a Shares Outstanding (Basic Average) of 839 Mil as of Mar. 2026. The average shares outstanding over two periods not accounting for dilutive securities like convertible bonds. View historical data on O'Reilly Automotive and its competitors.
Is O'Reilly Automotive's Shares Outstanding (Basic Average) too high?
O'Reilly Automotive's current Shares Outstanding (Basic Average) is 839 Mil. Overall, O'Reilly Automotive has a GF Score™ of 95/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does O'Reilly Automotive's Shares Outstanding (Basic Average) compare to AZO and BWA?
O'Reilly Automotive's Shares Outstanding (Basic Average) of 839 Mil can be compared against companies in the Vehicles & Parts industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shares Outstanding (Basic Average) for a Vehicles & Parts company?
A good Shares Outstanding (Basic Average) depends on the Vehicles & Parts industry context. However, Shares Outstanding (Basic Average) should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Shares Outstanding (Basic Average) mean?
A high Shares Outstanding (Basic Average) can signal that a stock is expensive relative to its fundamentals. The average shares outstanding over two periods not accounting for dilutive securities like convertible bonds. View historical data on O'Reilly Automotive and its competitors. O'Reilly Automotive's current Shares Outstanding (Basic Average) is 839 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is O'Reilly Automotive stock overvalued right now?
Based on GuruFocus' analysis, O'Reilly Automotive (STU:OM6) is currently considered Fairly Valued. The stock's GF Value™ is €83.17, compared to a current price of €76.79 — trading 7.7% below its estimated fair value. The current Shares Outstanding (Basic Average) is 839 Mil. O'Reilly Automotive's overall GF Score™ is 95/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shares Outstanding (Basic Average) calculated?
Shares Outstanding (Basic Average) is calculated from a company's financial statements. For O'Reilly Automotive (STU:OM6), the current Shares Outstanding (Basic Average) is 839 Mil as of Mar. 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 O'Reilly Automotive (STU:OM6) Overvalued in 2026?

Based on GuruFocus' analysis, O'Reilly Automotive stock appears to be undervalued. The current stock price of €76.79 is trading 7.7% below its estimated GF Value™ of €83.17. GuruFocus considers O'Reilly Automotive to be Fairly Valued.

Key valuation signals for STU:OM6:

  • Shares Outstanding (Basic Average): 839 Mil
  • GF Value™: €83.17 vs. price of €76.79 (7.7% below fair value)
  • GF Score™: 95/100 with 3 warning signs

No single metric tells the full story. See the STU:OM6 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

O'Reilly Automotive Business Description

Address 233 South Patterson Avenue, Springfield, MO, USA, 65802
Founded in 1957, O'Reilly Auto Parts is one of the largest specialty retailers of automotive aftermarket parts, tools, supplies, equipment, and accessories, serving both DIY and professional customers. The company operates nearly 6,600 stores across 48 US states, Puerto Rico, Mexico, and Canada. In fiscal 2025, O'Reilly generated nearly $18 billion in sales, with its dual market strategy yielding a balanced revenue mix, split between retail DIY customers (49%) and professional service orders (49%). The balance of its sales is derived from noncore categories, including wholesale distribution to independent parts distributors, heavy-shop equipment sales, and value-added services.
95GF Score

Get the complete analysis for STU:OM6

Shares Outstanding (Basic Average) is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€76.79
Price
€83.17
GF Value