今夜！突然暴雷！

Group 1 - The U.S. stock market saw an increase, with major indices reaching record highs ahead of the Federal Reserve's interest rate decision [1][2] - Nvidia's stock rose approximately 4%, making it the first company to reach a market capitalization of $5 trillion, amidst optimism surrounding AI [1] - Fiserv, a financial technology giant, experienced a significant stock drop of 40% after lowering its earnings per share forecast and reporting disappointing third-quarter results [2][3] Group 2 - Fiserv's CEO Mike Lyons announced a downward revision of the adjusted earnings per share (EPS) forecast for the year from $10.15-$10.30 to $8.50-$8.60, with third-quarter revenue and EPS falling short of analyst expectations [5][6] - The decline in Fiserv's performance was primarily attributed to its "Financial Solutions" division, which saw a 3% revenue drop and a profit margin decrease of approximately 5 percentage points year-over-year [7] - Analysts expressed shock at the rapid deterioration of Fiserv's business, with some stating that the management's explanations for the unexpected changes in revenue assessments were unconvincing [6][7]