UPDATE 1-Short sellers will have to report more data under new US SEC rules

The U.S. Securities and Exchange Commission on Friday agreed to roll out new rules aimed at boosting transparency of short selling, the controversial practice of betting against stocks that drew new scrutiny amid the GameStop saga. The rules, first proposed in late 2021 and early 2022, will require investors to report their short positions to the agency, and companies that lend out shares to report that activity to the Financial Industry Regulatory Authority (FINRA), a self-regulatory body that polices brokers. Short selling involves borrowing a stock to sell it in the expectation the price will fall, then repurchasing the shares and pocketing the difference.