By Jonathan Spicer
NEW YORK, Oct 20 (Reuters) – U.S. Senator Charles Schumer on Tuesday jumped in to the debate over anonymous trading venues known as dark pools, calling for tough new regulations a day before the U.S. Securities and Exchange Commission meets to consider new rules. Schumer, among the most vocal of lawmakers pressing for market structure reform, urged in a letter to SEC Chairman Mary Schapiro that the regulator adopt some of the most robust measures now on the table, and called for a new market-wide monitor.



