FTC Chief Says Willing to Break Up Companies Amid Big Tech Probe

The head of the U.S. Federal Trade Commission said he’s prepared to break up major technology platforms if necessary by undoing their past mergers as his agency investigates whether companies including Facebook Inc. are harming competition.

FTC Chairman Joe Simons, who is leading a broad review of the technology sector, said in an interview Aug. 13 that breaking up a company is challenging, but could be the right remedy to rein in dominant companies and restore competition.

“If you have to, you do it,” Simons said about breaking up tech companies. “It’s not ideal because it’s very messy. But if ...