S.E.C.’s Enforcement Chief Abruptly Resigns {} Margaret A. Ryan is leaving the agency just six months after joining it, a surprise given that most people hold the position for years.

Margaret A. Ryan is leaving the agency just six months after joining it, a surprise given that most people hold the position for years. Margaret A. Ryan is leaving the agency just six months after joining it, a surprise given that most people hold the position for years.