From left: Chicago Treasurer Melissa Conyears-Ervin, Ald. Harry Osterman (48) and Woodstock Institute president Horacio Mendez during a committee hearing on Tuesday.

A flurry of recent city action has so far done nothing to break up discriminatory lending practices among banks where the city parks its investments, officials said. But it did produce troves of fresh data city leaders can use as a yardstick to hold banks to higher standards.