Stocks jumped on Monday as the United States and Mexico closed a new trade deal, potentially removing a source of uncertainty that had been plaguing investors for months.

The S&P 500 gained 0.8 percent to close at 2,896.74 — a record high — with materials and financials as the best-performing sectors. The Nasdaq Composite climbed 0.9 percent to an all-time high, breaking above 8,000 points for the first time, as Facebook, Amazon, Netflix and Alphabet rose. Tech's gains led the Nasdaq to close at 8,017.90.