Review annual reports and news about your chosen U.S.-based MNCs to determine where it does most of its business and the foreign currency to which it is most exposed. Determine whether your U.S.-based MNCs stock performance is influenced by the exchange rate movements of the foreign currency (against the U.S. dollar) to which it is most exposed.

For Apple stock analysis: The comparison between Apple's stock and market index S&P 500 is shown in snapshot below: