Investors in Chipotle probably weren't excited today, when the company came under fire at the Value Investing Congress this morning.

The renowned David Einhorn, famous for shorting stocks, anounced that he thought Chipotle is a "short." Investors watched as shares immediately took a nosedive to finish the day down 4%. Einhorn believes the company faces significant headwinds from competitors such as Yum! Brands (NYSE:YUM)and its revamped Taco Bell franchise. 

While Einhorn was optimistic on Taco Bell's prospects, he was bearish on the company as a whole, citing difficulties in the Pizza Hut and KFC businesses. For a more in-depth look at these companies, watch the following video, in which Fool.com analysts Blake Bos and Isaac Pino discuss the recent announcements.

While Chipotle may be facing stiffer competition in America, there are several companies making strides overseas, and profiting from our increasingly global economy can be as easy as investing in your own backyard. Our free report "3 American Companies Set to Dominate the World" shows you how, so click here to access your free copy while it's available.