A Dollar ShortThe dollar weakens when global investors and foreign central banks question the stability of U.S. dollar-denominated assets, and a volatile cocktail of factors set off the recent slide. A weaker dollar means the vast majority of imported goods would become even more expensive. A weaker dollar means the vast majority of imported goods would become even more expensive. : You can allocate part of your portfolio to foreign stocks and bonds in stable economies with strong currencies. A weaker dollar chips away at all of that.