U.S. stock futures presented a mixed picture in premarket trading on Tuesday, September 23, 2025, as investors digested a flurry of corporate news and awaited key economic signals, most notably a speech from Federal Reserve Chair Jerome Powell. This follows a robust Monday session where major indices notched their third consecutive day of record closing highs, largely propelled by optimism surrounding artificial intelligence and expectations of further Federal Reserve rate cuts.Premarket Trading Activity an ...