Midday movers: NRG Energy, Royal Caribbean, Signet Jewelers and more

By Liz Moyer

Investing.com -- Stocks were falling for a second day this week as investors prepared to hear the Federal Reserve's latest on the direction of interest rates after their last meeting of the year next week. Here are the midday movers for Dec. 6.

• NRG Energy Inc (NYSE:NRG) stock is down 16.5% after the Texas utility operator announced a deal to buy Vivint Smart Home (NYSE:VVNT), a maker of connected devices, for $2.8 billion in cash and the assumption of $2.4 billion in debt. 

• Royal Caribbean Cruises Ltd (NYSE:RCL) stock is down 4.5% after a double downgrade by JPMorgan, where analysts cut it to underweight and slashed their price target to $47 from $106 saying the cruise operator is more vulnerable in the short-term than some of its peers to market fluctuations.

• Signet Jewelers Ltd (NYSE:SIG) shares jumped more than 19% after the diamond and jewelry retailer reported better-than-expected results for the quarter, with same-store sales that matched expectations as it heads into the holiday gift buying season.

• Morgan Stanley (NYSE:MS) stock fell 3.7% after reports it was trimming 2% of its staff amid what is widely expected to be a round of Wall Street layoffs this year. Goldman Sachs Group Inc (NYSE:GS) stock was also down 2.7%.

• Meta Platforms Inc (NASDAQ:META) stock dropped 6% after its independent oversight board told the social media company it should overhaul its handling of high-profile users of Instagram and Facebook.