Earnings optimism faces off against tariff uncertainty. Despite some positive guidance, Brett Ewing says fundamentals may not be enough to quell concerns just yet. With the S&P 500 sitting at the same level as it was in November, Ewing attributes current selling to uncertainty around trade policies and the U.S. debt. He also sees opportunities in fixed income, particularly in treasuries, and in small- to mid-cap stocks with strong balance sheets and limited international exposure.