Karen Karniol-Tambour, chief co-investment officer at Bridgewater Funds, said on Tuesday that holding U.S. stocks is a "good thing" and that she expects strong economic growth under President Trump. Karniol-Tambour said the outlook for U.S. economic growth has pushed stocks higher, even as 10-year Treasury yields rose to four-month highs following Trump's victory in the November 5 presidential election. "We may still have room to grow, even with tariffs in place, and there are a lot of unknowns," she said. The S & P 500 is up nearly 5 percent since Trump won the election.