Warren Buffett attracts a lot of attention. As the world's third-richest person and most celebrated investor, thousands try to glean what they can from his thinking processes and track his investments.

While we can't know for sure whether Buffett is about to buy Staples (Nasdaq: SPLS) -- he hasn't specifically mentioned anything about it to me -- we can discover whether it's the sort of stock that might interest him. Answering that question could also inform whether it's a stock that should interest us.

In his most recent 10-K, Buffett lays out the qualities he looks for in an investment. In addition to adequate size, proven management, and a reasonable valuation, he demands:

  1. Consistent earnings power.
  2. Good returns on equity with limited or no debt.
  3. Management in place.
  4. Simple, non-techno-mumbo-jumbo businesses.

Does Staples meet Buffett's standards?

1. Earnings power
Buffett is famous for betting on a sure thing. For that reason, he likes to see companies with demonstrated earnings stability.

Let's examine Staples’s earnings and free cash flow history:

Buffettspls

Source: Capital IQ, a division of Standard & Poor's. Free cash flow is adjusted based on author’s calculations.

While Staples’ earnings have eroded slightly in recent years, they’ve remained more or less stable over the past five.

2. Return on equity and debt
Return on equity is a great metric for measuring both management's effectiveness and the strength of a company's competitive advantage or disadvantage -- a classic Buffett consideration. When considering return on equity, it's important to make sure a company doesn't have an enormous debt burden, because that will skew your calculations and make the company look much more efficient than it actually is.

Since competitive strength is a comparison between peers, and various industries have different levels of profitability and require different levels of debt, it helps to use an industry context.

Company

Debt-to-Equity

Return on Equity (LTM)

Return on Equity
(5-Year Average)

Staples 29% 13% 16%
Office Depot (NYSE: ODP) 69% (7%) (17%)
OfficeMax (NYSE: OMX) 260% 10% (20%)
CVS Caremark (NYSE: CVS) 26% 9% 12%

Source: Capital IQ, a division of Standard & Poor's.

Staples produces a superior return on equity to its peers while employing limited debt.

3. Management
CEO Ron Sargent has been at the job since 2002.

4. Business
Office supply retail isn’t particularly susceptible to rapid technological disruption, although e-commerce has particularly hurt some of the weaker competitors in this sector.

The Foolish conclusion
Regardless of whether Buffett would ever buy Staples, we've learned that the company exhibits some of the characteristics of a quintessential Buffett investment: fairly consistent earnings, tenured management, and a straightforward industry, though it’s possible he would prefer to watch Staples to see if it can improve its earnings growth and return on equity somewhat.

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Ilan Moscovitz doesn’t own shares of any companies mentioned. You can follow him on Twitter @TMFDada. Motley Fool newsletter services have recommended buying shares of Staples. Motley Fool newsletter services have recommended shorting Office Depot. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.