In today's world, most companies span several regions and sell across the globe. As Foolish colleague Morgan Housel notes, 10 years ago, less than a third of S&P 500 revenue came from overseas. Today, more than half of the S&P 500's growth comes from overseas.

And that number is growing. The truth is, investors regularly underestimate how much demand comes from abroad. More importantly, for large, multinational corporations that have already established a presence in their home markets, much of their future growth comes from abroad.

With that in mind, today we're looking at Caterpillar (NYSE: CAT). We'll examine not only where its sales and earnings come from, but how its sales abroad have changed over time.

Where Caterpillar's sales were four years ago
Four years ago, Caterpillar relied heavily on the United States for revenue. Sales in North America accounted for 53% of total company sales.

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

Where Caterpillar's sales are today
Today, Caterpillar's regional sales have changed drastically. Sales to the Americas have slid all the way down to 38% of total revenue, while Asia/Pacific rose from just 9% of sales in 2006 to become Caterpillar's second-largest market at 24% of sales.

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

While there's much to be said about the structural problems facing the American heavy equipment market, the chart below is probably the best way of summarizing where opportunity awaits the company.

Region

4-Year
Total Sales Growth

Company-wide total 3%
North America (27%)
Asia/Pacific 169%

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

Competitor checkup
One last point to check is how Caterpillar's footprint compares to some of its peers across the broader machinery sector:

Company

Geography With Most Sales

Percent of Sales

Caterpillar North America 38%
Deere (NYSE: DE) United States and Canada 65%
Terex (NYSE: TEX) All Other* 41%

Source: Capital IQ, a division of Standard & Poor's.
*Includes all countries outside the United States and Europe. In terms of largest reported country, the United States accounts for 27% of sales.

Among its more direct peers, Caterpillar appears to have the most exposure to higher-growth Asian markets. In terms of geographic distribution, Terex is very similar, reporting 59% of sales to the U.S. and Europe. However, it uses a nebulous "all other" category that includes countries from Canada to China. This makes analyzing its overseas exposure difficult.

Interestingly, despite Caterpillar's dominance across the heavy equipment market, smaller competitors have managed to make inroads in the North American market where Caterpillar has seen precipitous declines. Specifically, Titan Machinery (Nasdaq: TITN) -- which only reports sales in the United States -- saw its sales rise 274% during the same time Caterpillar saw North American sales swoon 27%.

For investors looking for growth in emerging-market infrastructure from markets other than China, another company with heavy international exposure is Capstone Turbine (Nasdaq: CPST). To be sure, it's a company with a heavy risk profile; its earnings have always been buried in red ink. However, the company produces a "green" product that competes with less efficient products like reciprocating engines from Caterpillar. What's interesting about Capstone Turbine is the company's geographic sales. Trailing shortly behind the United States is Russia, accounting for 25% of company sales.

If you look into Capstone and think its products can carve out a profitable niche, it comes with the added bonus of exposure to Russian infrastructure growth, which is difficult to find.

Keep searching
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