Is Amazon.com's Stock Reasonable by the Numbers?

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Numbers can lie -- yet they're the best first step in determining whether a stock is a buy. In this series, we use some carefully chosen metrics to size up a stock's true value based on the following clues:

  • The current price multiples.
  • The consistency of past earnings and cash flow.
  • How much growth we can expect.

Let's see what those numbers can tell us about how expensive or cheap Amazon.com (NAS: AMZN) might be.

The current price multiples
First, we'll look at most investors' favorite metric: the P/E ratio. It divides the company's share price by its earnings per share (EPS) -- the lower, the better.

Then we'll take things up a notch with a more advanced metric: enterprise value to unlevered free cash flow, which divides the company's enterprise value (basically, its market cap plus its debt, minus its cash) by its unlevered free cash flow (its free cash flow, adding back the interest payments on its debt). As with the P/E, the lower this number is, the better.

Analysts argue about which is more important -- earnings or cash flow. Who cares? A good buy ideally has low multiples on both.

Amazon has a P/E ratio of 99.8 and an EV/FCF ratio of 51.3 over the trailing 12 months. If we stretch and compare current valuations with the five-year averages for earnings and free cash flow, we see that Amazon has a P/E ratio of 116.5 and a five-year EV/FCF ratio of 55.7.

A positive one-year ratio of less than 10 for both metrics is ideal (at least in my opinion). For a five-year metric, less than 20 is ideal.

Amazon is 0-for-4 on hitting the ideal targets, but let's see how it stacks up against some of its competitors and industry mates. 

Company

1-Year P/E

1-Year EV/FCF

5-Year P/E

5-Year EV/FCF

Amazon99.851.3116.555.7
eBay12.816.221.616.7
Wal-Mart12.620.714.622.9
Best Buy7.83.77.06.3

Source: S&P Capital IQ; NM = not meaningful because of losses.

Numerically, we've seen how Amazon's valuation rates on both an absolute and relative basis. Next, let's examine ...

The consistency of past earnings and cash flow
An ideal company will be consistently strong in its earnings and cash-flow generation.

In the past five years, Amazon's net income margin has ranged from 2% to 3.6%. In that same time frame, unlevered free cash flow margin has ranged from 3.6% to 8.9%.

How do those figures compare with those of the company's peers? See for yourself:

anImage

Source: S&P Capital IQ; margin ranges are combined.

Source: S&P Capital IQ; margin ranges are combined.

In addition, over the past five years, Amazon has tallied up five years of positive earnings and five years of positive free cash flow.

Next, let's figure out ...

How much growth we can expect
Analysts tend to comically overstate their five-year growth estimates. If you accept them at face value, you willoverpay for stocks. But even though you should definitely take the analysts' prognostications with a grain of salt, they can still provide a useful starting point when compared with similar numbers from a company's closest rivals.

Let's start by seeing what this company's done over the past five years. In that time period, Amazon has put up past EPS growth rates of 22.7%. Meanwhile, Wall Street's analysts expect future growth rates of 30.1%.

Here's how Amazon compares with its peers for trailing-five-year growth:

anImage

Source: S&P Capital IQ; EPS growth shown.

Source: S&P Capital IQ; EPS growth shown.

And here's how it measures up with regard to the growth analysts expect over the next five years:

anImage

Source: S&P Capital IQ; estimates for EPS growth.

Source: S&P Capital IQ; estimates for EPS growth.

The bottom line
The pile of numbers we've plowed through has shown us the price multiples that shares of Amazon are trading at, the volatility of its operational performance, and what kind of growth profile it has -- both on an absolute and a relative basis.

The more consistent a company's performance has been and the more growth we can expect, the more we should be willing to pay. We've gone well beyond looking at a 99.8 P/E ratio, and we see that Amazon's stock is about half as expensive based on EV/FCF multiples.

For those premium multiples, Amazon's delivered strong past growth and solid profitability (retailers generally have low margins, but we can see that Amazon's are ranging well in comparison with Wal-Mart's).

I'm a big fan of the premier online retailer, but I've been waiting (perhaps in vain) for better prices. While paying a premium for Amazon's stock is reasonable given its performance and prospects, I continue to watch. Our CAPS community appears similarly torn, rating it three stars out of five. If you find Amazon's numbers or story compelling, don't stop here. Continue your due-diligence process until you're confident one way or the other. As a start, add it to My Watchlist to find all of our Foolish analysis.

I wrote about a stock that's flying under the radar in our brand new free report: "The Stocks Only the Smartest Investors Are Buying." I invite you to take a free copy to find out the name of the company I believe Warren Buffett would be interested in if he could still invest in small companies.

At the time this article was published Anand Chokkaveluowns shares of Best Buy. The Motley Fool owns shares of Wal-Mart Stores, Best Buy, and Amazon.com.Motley Fool newsletter serviceshave recommended buying shares of eBay, Amazon.com, and Wal-Mart Stores, writing covered calls in Best Buy, writing puts in eBay, and creating a diagonal call position in Wal-Mart Stores. Try any of our Foolish newsletter servicesfree for 30 days. We Fools don't all hold the same opinions, but we all believe thatconsidering a diverse range of insightsmakes us better investors. The Motley Fool has adisclosure policy.

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