The dollar remained firm vs most major currencies in U.S. hours Thursday, as fiscal year-end and end-of-month flows dominated illiquid markets, sources said. Traders said "it's really quiet" and said they were preferring to wait until next week before entering into new positions. "You have the Tankan report out next week, and the weak February industrial production data, may weigh on that," said Bob Keiser, currency analysts at MCM Currency Watch.