Question: What is the middle name of the former American stock trader who was convicted alongside Michael Milken due to Steven Posner's staged corporate takeover?
Sentence (from "Steven Posner"): A 1989 corporate takeover staged by the Posners led to fraud convictions for Ivan Boesky and Michael Milken levied by the United States Securities and Exchange Commission for their role in improperly assisting the Posners in the attempted deal.
Relevant evidence: Yes