<p>Stocks are mostly higher on Wall Street after an encouraging report on inflation, worries about tariifs are keeping markets on edge.</p><p>The stock market opened higher but gave back some of those gains after other counties announced retaliatory measures following President Donald Trump's latest escalation of his trade war.</p><p>The S&P 500 was 0.4% higher in the first hour of trading Wednesday, the Dow Jones Industrial Average gave up an early gain and fell 172 points-that's about 0.4%-and the Nasdaq composite was 1.1% higher.</p><p>Artificial Intelligence companies helped lead the way.</p><p>Nvidia added 5% to trim its loss for the year.</p><p>Seth Sutel, New York.</p><p> </p>
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