When it comes to Monday.com's (MNDY) earnings and outlook, Diane King Hall says the company is "firing on all cylinders," shown through its rally at the opening bell. BP PLC (BP) rallied after Elliott Management announced it would build a stake in the company. Arm Holdings (ARM) got a price target hike from Loop Capital and reiterated its buy rating while T-Mobile (TMUS) hit a 52-week high after launching beta testing for Starlink-powered texting services. Diane discusses the morning's biggest stories.