An insider-trading indictment shows ties to Bloomberg News scoops

FOR MORE THAN SIX MONTHS, FEDERAL PROSECUTORS SAY, a New York man used inside information to make illegal profits in the stock market—and a core element of his alleged scheme was his interaction with Bloomberg News, which published several stories shortly after the trader arranged to make significant purchases of the companies’ shares.

Last month, a federal grand jury indicted Jason Peltz on multiple counts of securities fraud, money laundering, tax evasion and lying to the FBI. Peltz, 38, is accused of working with over a half-dozen unnamed and unindicted...