On the first trading day of December, the s&p 500 index and the Nasdaq soared, reaching new intraday highs and closing at new highs on Monday.

The s&p 500 index hit a record high of 6,053 points intraday, closing near this peak, up 14 points or 0.2% for the day, finishing at 6,047 points, a new closing high; the Nasdaq reached a peak of 19,436 points intraday, closing up 185 points or 1%, finishing at 19,403 points; the Dow underperformed, closing down 128 points or 0.3%, finishing at 44,782 points.

Tesla (TSLA.US) completed an update on its autonomous driving FSD system, with the market believing that passage is expected to accelerate under the Trump administration, and the stock rose more than 3%.

The investigation committee of super micro computer (SMCI.US), a manufacturer of ai servers, found "no evidence of wrongdoing," and stated that its financial statements are substantially accurate, leading to a surge of nearly 29% in the company's stock price.

Amazon (AMZN.US) online holiday shopping season began on Monday, with its stock price rising more than 1%.

Intel (INTC.US) announced that Kissinger has resigned as CEO after four years of poor performance at the chip manufacturer, with the company's stock initially rising then later falling, closing down 0.5%.