Regulators, wary of risks, want more trading data: Fed's Dudley

Regulators need a clearer view of the trading that takes place in the U.S. Treasury market, the world's deepest, in order to better understand looming risks and the sources of abrupt changes in prices, an influential financial supervisor said on Monday. William Dudley, president of the Federal Reserve Bank of New York, which acts as the government's eyes and ears on Wall Street, said risks remain after the 2014 "flash crash" in Treasuries and after this month's plunge in the British pound - whic