1920: U.S. v. U.S. Steel Corp.
The DOJ indicted U.S. Steel in 1911 with monopolizing the steel industry after four businessmen - Andrew Carnegie, Elbert Gary, Charles M. Schwab and J.P. Morgan - consolidated 10 companies into the corporate giant. But in 1920, the U.S. Supreme Court ruled that U.S. Steel was not violating the Sherman Antitrust Act despite the company having almost a 90 percent market share when it was finally merged. By the time the case was litigated before a district court in 1915, U.S. Steel's domestic market share had fallen to 50 percent, keeping it safe as a single company since a monopoly no longer existed.