In 1985, Englander and his partner John Mulheren Jr., started an investment firm called Jamie Securities Co. with a $75 million investment from the Belzberg family of Canada. Mulheren had previously worked as a trader for Ivan Boesky. Boesky was later convicted of insider trading, and agreed to testify against Mulheren in a plea deal to receive a lesser sentence. In February 1988, Mulheren was arrested for carrying a loaded assault rifle. Mulheren was convicted of orchestrating illegal stock trades for Boesky, but the ruling was later overturned. Jamie Securities was dissolved in 1988, due to the negative publicity in the aftermath of Mulheren's situation. Englander was neither charged nor implicated in any way with Mulheren's activities.