S&P 500 Gains and Losses Today: UPS Stock Drops as Shipper Trims Amazon Deliveries

Market Overview - Major U.S. equities indexes moved higher, with the S&P 500 advancing 0.5%, the Dow up 0.4%, and the Nasdaq ending roughly 0.3% higher, driven by consumer spending despite a slight deceleration in GDP growth [2]. Company Performances - Vistra (VST) shares surged 13.6%, recovering from earlier losses, as optimism about its potential to power AI data centers contributed to a 330% increase over the past year [3]. - IBM (IBM) stock rose 13.0% after exceeding earnings and sales estimates for the fourth quarter, with strong revenue growth in its software business driven by AI demand [4]. - Las Vegas Sands (LVS) shares increased by 11.1% following a quarterly report that showed fourth-quarter sales exceeded estimates, despite softness in its Macao business [5]. - United Parcel Service (UPS) shares fell 14.1% after reporting lower-than-expected fourth-quarter sales and profits, alongside an agreement to cut Amazon delivery volumes by 50% [6]. - ServiceNow (NOW) shares dropped 11.4% after its fourth-quarter earnings release, where subscription revenue growth fell short of guidance [7]. - Comcast (CMCSA) shares decreased by 11.0% due to a wider-than-expected decline in broadband customers, despite beating profit and sales estimates driven by its Peacock streaming service [8].