successful bid for RJR Nabisco. Organizationally, the firm was considered the definition of a meritocracy. Divisions received bonuses based on their individual performance rather than the performance of the firm as a whole. This often led to acrimony between individual departments, who sometimes acted like independent companies rather than small parts of a larger one. Also, several employees formed limited partnerships that allowed them to invest alongside Milken. These partnerships often made more money than the firm itself did on a particular deal. For instance, many of the partnerships ended up with more warrants than the firm itself held in particular deals. The firm had its most profitable fiscal year in 1986, netting $545.5 million—at the time, the most profitable year ever for a Wall Street firm, and equivalent to $ billion in . In 1987, Milken was paid executive compensation of $550 million for the year. Downfall 1986-1989 According to Dan Stone, a former Drexel executive, the firm's aggressive culture led many Drexel employees to stray into unethical, and sometimes illegal, conduct. Milken himself viewed the securities laws, rules and regulations with some degree of contempt, feeling they hindered the free flow of trade. He was under nearly constant scrutiny from the Securities and Exchange Commission from 1979 onward, in part because he often condoned unethical and illegal behavior by his colleagues at Drexel's operation in Beverly Hills. He personally called Joseph, however, who believed in following the rules to the letter, on several occasions with ethical questions. The firm was first rocked on May 12, 1986, when Dennis Levine, a managing director in Drexel's M&A department, was charged with insider trading. Levine had joined Drexel only a year earlier. Unknown to Drexel management, he had spent his entire Wall Street career trading on inside information. Levine pleaded guilty to four felonies, and implicated one of his recent partners, super-arbitrageur Ivan Boesky. Largely based on information Boesky promised to provide about his dealings with Milken, the SEC initiated an investigation of Drexel on November 17. Two days later, Rudy Giuliani, then the United States Attorney for the Southern District of New York, launched his own investigation. Ominously, Milken refused to cooperate with Drexel's own internal investigation, only speaking through his attorneys. A year later, Martin Siegel, the co-head of M&A, pleaded guilty to sharing inside information with Boesky during his tenure at Kidder, Peabody. For two years, Drexel steadfastly