Microsoft's stock dropped 6% on Thursday despite a strong fiscal first-quarter earnings report. Microsoft's net income, earnings per share, and revenue all surpassed analyst expectations. However, investor concerns focused on a softer second-quarter revenue forecast, slightly below targets. Microsoft's AI investments remain a major focus for investors as the company expands its infrastructure and increases chip spending to manage larger workloads. The tech giant anticipates an income hit this period due to related costs.