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Image source: MasterCard.

Investors in MasterCard (NYSE:MA) have earned solid returns in the nearly 10 years since the company's initial public offering, and despite ongoing fundamental strength, some investors believe the stock is overdue for a correction. Yet MasterCard still has plenty of good things going for it, and there are reasons to believe shares could climb even from current levels.

Let's look at a few reasons MasterCard shares could rise in 2016.

The dollar has stopped its ascent
MasterCard has faced a major headwind from the weakness of foreign currencies compared to the U.S. dollar. MasterCard has done a masterful job of promoting its business overseas, posting double-digit gains in local-currency terms on key metrics. Yet the dollar's strength has made MasterCard's overseas revenue and profits translate into fewer dollars, and that has punished the company's reported sales and earnings growth.

So far in 2016, the dollar has given back some of its gains. The euro has strengthened by about 3% to 4%, and gains in the Japanese yen have been even more substantial, at roughly 5% to 6%. Not all currencies have enjoyed the same bump, but even a flat performance would provide a welcome respite from the dollar-driven declines MasterCard has suffered.

American Express continues to struggle
Competition in the card-network space has always been tough, but MasterCard has held up far better than some of its rivals. American Express (NYSE:AXP) has continued to struggle, giving up a quarter of its value just since mid-December. AmEx is dealing with the loss of major deals with co-branding partners, and that has forced the company to make further restructuring efforts to cut costs and retrench as it tries to pick up new business elsewhere. Even with a big one-time gain likely when it sells off card-portfolio assets, American Express nevertheless faces a turning point in its history.

MasterCard stands to benefit from any loss of confidence in the American Express brand. By ramping up efforts to try to make co-branding partnerships of its own, MasterCard can both make the most of American Express' troubles and hold off other competitors from making market-share gains. That potential win-win is too good for MasterCard to pass up.

Global economic strength from consumers
Economists have gloomier projections about the fate of the global economy for 2016. Low commodity prices are wreaking havoc on the prospects for countries that rely heavily on natural resources for their well-being, and countries that typically consume those commodities project slower growth despite their increased availability.

For MasterCard, though, there's reason to anticipate a potential silver lining from these economic woes. Consumers have gotten massive cash infusions from lower gasoline prices, and that has provided them with more discretionary income to spend. Moreover, rising home prices have given Americans more confidence about their economic futures, and that could spur greater willingness to take on debt after a long deleveraging of the national consumer economy. Greater credit activity works in MasterCard's favor, and similar potential around the world could also bolster its international prospects.

MasterCard investors shouldn't get greedy, especially given the immense success they've had over the years. Nevertheless, MasterCard does have the potential to stay on track and sustain the positive momentum that has turned it into a successful growth stock for nearly a decade. In particular, if these three things work out in MasterCard's favor, then the card giant's stock could produce further strong returns for investors.

Dan Caplinger has no position in any stocks mentioned. The Motley Fool owns shares of and recommends MasterCard. The Motley Fool recommends American Express. 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.