Former financier and central figure in insider trading scandals of the 1980s, Ivan Boesky, has passed away at the age of 87. Boesky, who was known for his involvement in the Wall Street world, was a pioneer in the risky business of speculating in takeover stocks. At the peak of his career, his wealth was estimated at $280m (£220m). However, Boesky’s success was short-lived as the US Securities and…