As an investor, it pays to follow the cash. If you figure out how a company moves its money, you might eventually find some of that cash flowing into your pockets.

In this series, we'll highlight four companies in an industry, and compare their "cash king margins" over time, trying to determine which has the greatest likelihood of putting cash back in your pocket. After all, a company can pay dividends and buy back stock only after it's actually received cash -- not just when it books those accounting figments known as "profits."

Today, let's look at Qlik Technologies (Nasdaq: QLIK) and three of its peers.

The cash king margin
Looking at a company's cash flow statement can help you determine whether its free cash flow actually backs up its reported profit. Companies that can create 10% or more free cash flow from their revenue can be powerful compounding machines for your portfolio. A sustained high cash king margin can be a good predictor of long-term stock returns.

To find the cash king margin, divide the free cash flow from the cash flow statement by sales:

Cash king margin = Free cash flow / sales

Let's take McDonald's as an example. In the four quarters ending in June, the restaurateur generated $6.87 billion in operating cash flow. It invested about $2.44 billion in property, plant, and equipment. To calculate free cash flow, subtract McDonald's investment ($2.44 billion) from its operating cash flow ($6.87 billion). That leaves us with $4.43 billion in free cash flow, which the company can save for future expenditures or distribute to shareholders.

Taking McDonald's sales of $25.5 billion over the same period, we can figure that the company has a cash king margin of about 17% -- a nice high number. In other words, for every dollar of sales, McDonald's produces $0.17 in free cash.

Ideally, we'd like to see the cash king margin top 10%. The best blue chips can notch numbers greater than 20%, making them true cash dynamos. But some businesses, including many types of retailing, just can't sustain such margins.

We're also looking for companies that can consistently increase their margins over time, which indicates that their competitive position is improving. Erratic swings in margins could signal a deteriorating business, or perhaps some financial skullduggery; you'll have to dig deeper to discover the reason.

Four companies
Here are the cash king margins for four industry peers over a few periods.

Company

Cash King Margin (TTM)

1 Year Ago

3 Years Ago

5 Years Ago

Qlik Technologies 2.2% 14.9% NA NA
Actuate 12.6% 18.6% 19.8% 10.8%
International Business Machines 14.7% 15.4% 14.1% 11.6%
MicroStrategy 3.4% 16.0% 24.6% 35.0%

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

Both Actuate (Nasdaq: BIRT) and IBM (NYSE: IBM) meet our 10% threshold for attractiveness, and while both of them have seen fluctuating margins over the five-year period, both have higher current margins than they did five years ago. Qlik has the lowest cash king margins of the listed companies, and its margins have declined by more than 10 percentage points from last year. MicroStrategy's (Nasdaq: MSTR) margins are also well below our 10% threshold for attractiveness, and they have steadily declined over the five-year period, with a loss of more than 30 percentage points from five years ago.

Qlik Technologies is a business intelligence provider that offers more than twice the growth seen in competitors Actuate and MicroStrategy. This is big news for a company in the already fast-growing business intelligence market, especially if this growth helps it gain a long-term competitive advantage so it can dominate its markets.

IBM is best-known for its hardware, but it has been gradually shifting more of its focus to providing software and services that can be used with its hardware. This has helped it develop a competitive advantage over other hardware companies, including Hewlett-Packard, Dell, and Oracle in addition to increasing its margins. IBM has also developed a competitive advantage by gaining more exposure to international markets, with nearly two-thirds of its revenue coming from outside the Americas. Also, unlike the other listed companies, IBM offers a modest dividend.

The cash king margin can help you find highly profitable businesses, but it should only be the start of your search. The ratio does have its limits, especially for fast-growing small businesses. Many such companies reinvest all of their cash flow into growing the business, leaving them little or no free cash -- but that doesn't necessarily make them poor investments. Conversely, the formula works better for slower-growing blue chips. You'll need to look closer to determine exactly how a company is using its cash.

Still, if you can cut through the earnings headlines to follow the cash instead, you might be on the path toward seriously great investments.

Want to read more about Qlik Technologies? Add it to My Watchlist, which will find all of our Foolish analysis on this stock.