Today's biggest winners and losers in the stock market.

On this episode of Stock Movers:
Listen for comprehensive cross-platform coverage of the US market close as heard on Bloomberg Television, Bloomberg Radio, and YouTube with Romaine Bostick, Katie Griefeld, Carol Massar and Tim Stenovec

- Norwegian Cruise (NCLH)shares plunge as much as 12%, the most intraday in nearly four months, after the cruise operator’s adjusted earnings per share forecast for the first quarter fell short of the average analyst estimate. The disappointing outlook comes as activist investor Elliott Investment Management built a stake of more than 10% in the cruise line, criticizing management decisions and spending.
- Palantir Technologies (PLTR) stock was jumping in premarket trading on Monday, as the ongoing U.S.-Iran military conflict renewed investor appetite for defense-linked artificial intelligence companies.

- Nvidia (NVDA) agreed to invest in two companies that develop data center optics essential for artificial intelligence. Nvidia will invest in Lumentum Holdings Inc. and Coherent Corp. in multiyear deals that include purchase agreements and access rights for advanced laser components.