Cohn, Bush soon discovered, was the 37-year-old protégé of Paul Singer, the founder of Elliott Management and one of the most powerful, and most unyielding, investors in the world. Singer, who is 73, with a trim white beard and oval spectacles, is deeply involved in everything Elliott does. The firm has many kinds of investments, but Singer is best known as an “activist” investor, using his fund’s resources—about $35B—to buy stock in companies in which it detects weaknesses. Elliott then pressures the company to make changes to its business, with the goal of improving the stock price. Most of their investment campaigns proceed without significant conflict, but a noticeable number seem to end up mired in drama. A signature Elliott tactic is the release of a letter harshly criticizing the target company’s CEO, which is often followed by the executive’s resignation or the sale of the company. 1 of Singer’s few unsuccessful campaigns, to block a merger within Samsung, eventually led to the impeachment and imprisonment of the South Korean President after Singer’s opponents became so desperate to fend off his attack that they allegedly began bribing government officials. From the outside, it can seem as if Elliott is causing the drama, but the firm argues that it simply identifies preëxisting problems and acts as a check on the system.