Speyer's net worth is up a bit since the 2012 Forbes 400 list thanks to the rise in value of his firm's most prized property, Rockefeller Center, co-owned with the family of Lester Crown.

FORBES: Jerry Speyer

Rockefeller's Standard Oil Co. had abused its monopoly power to keep others from competing and ordered the company to divide into 34 separate companies.

WSJ: Sherman Stirs: U.S. Revives Section 2 of the Antitrust Act

In one high-profile loss, Mitubishi Estate Co. was forced to put the storied Rockefeller Center complex in New York into a bankruptcy proceeding.

WSJ: Mitsui Fudosan Has