Feng Huang Wang·2025-10-28 22:15Core Insights - Apple and Microsoft have both briefly surpassed a market capitalization of $4 trillion, marking significant milestones in their corporate histories [1][2] - The optimism surrounding Apple's new iPhone and easing tariff pressures have contributed to its stock price increase, with a notable rebound of over 56% since April [3][5] - Microsoft announced a new agreement with OpenAI to support the establishment and capital restructuring of OpenAI Group PBC, with Microsoft holding approximately $135 billion in investment equity [2] Group 1: Apple - Apple's stock price reached $269.87, briefly pushing its market cap above $4 trillion, making it the third company to achieve this milestone [1] - The market is optimistic about the new iPhone's demand, indicating a potential "upgrade cycle" is underway, with sales of the iPhone 17 series in the first ten days surpassing the iPhone 16 series by 14% [3][5] - Analyst Dan Ives from Wedbush Securities stated that Apple's entry into the $4 trillion market cap club is a watershed moment for both the company and the tech industry [5] Group 2: Microsoft - Microsoft’s stock price increased by over 4.1% in early trading, with a current market cap also above $4 trillion [1] - The company has a significant investment in OpenAI, with a diluted equity stake of approximately 27% [2] - Despite the strong performance, Microsoft’s market cap still trails behind Nvidia, which is valued at around $4.73 trillion [5]