U.S. dollar posts modest gains on renewed virus fears

NEW YORK (Reuters) - The dollar firmed modestly on Tuesday, lifted by renewed concerns about the spread of the novel coronavirus, as countries around the world and some U.S. states imposed new lockdowns, stalling their paths to economic recovery.Some analysts said the dollar may have also benefited from the month-end and quarterly-end rebalancing flows.That said, the dollar was on track to end both the second quarter and the month of June on a negative note. Investors sold the dollar and bought..