WASHINGTON—Famed horror novelist Stephen King took the witness stand in a federal antitrust case on Tuesday, testifying that up-and-coming authors would be harmed if his longtime publisher Simon & Schuster is acquired by larger rival Penguin Random House.
“I came here because I think consolidation is bad for competition,” Mr. King said in a Washington, D.C., courtroom. “That’s my understanding of the book business, and I’ve been around it for 50 years,” he said.
