第一财经·2025-10-28 13:48Market Performance - The three major U.S. stock indices opened slightly higher, with the Dow Jones Industrial Average rising by 0.64%, the S&P 500 increasing by 0.31%, and the Nasdaq Composite gaining 0.55%, all reaching new historical highs [1] - Current prices and changes for major indices are as follows: Dow Jones at 47850.11 (+305.52), Nasdaq at 23767.65 (+130.19), and S&P 500 at 6896.26 (+21.10) [2] Company Highlights - Microsoft shares rose over 3%, with its market capitalization surpassing $4 trillion. The company signed a new agreement with OpenAI to purchase an additional $250 billion worth of Azure services. Microsoft also supports the establishment of a public benefit corporation for OpenAI, holding an investment stake valued at approximately $135 billion in the OpenAI group [2] - Apple shares increased by 0.3%, with its market capitalization also reaching $4 trillion [3] - United Parcel Service (UPS) shares surged over 10% after raising its full-year profit forecast for 2025 [3]