By Mike Dolan -What matters in U.S. and global markets today By Mike Dolan, Editor-At-Large, Finance and Markets With one eye on Tuesday's U.S. local elections, stocks have been knocked back sharply from Monday's heady highs - partly on Palantir's 6% earnings-day drop and ahead of Wednesday's Supreme Court hearings on the legality of some U.S. import tariffs. Despite a headline beat and decent revenue forecast, the poor reaction to the update from AI and data analytics darling Palantir - whose stock ha ...