Broadening asset volatility intensifies worries for tariff-tossed U.S. stocks

Wild swings in global markets are poised to keep U.S. stock investors on edge in the coming week, as a weakening dollar and a selloff in Treasuries compound extreme equity volatility that erupted after President Donald Trump launched his sweeping tariffs. The S&P 500 was set for solid gains on the week after Trump pulled back on the heftiest tariffs on many countries, relieving Wall Street's worst-case scenario. Still, the benchmark index still was down about 13% from its February 19 all-time closing high. Concerns about lasting economic damage remained as the U.S. and China ratcheted up their trade battle…