The Dow Jones Industrials barreled 144.63 points to start trading at 38,820.31.
The S&P 500 moved ahead 31.49 points to 5,159.25.
The NASDAQ collected 102.31 points to 16,258.64.
Micron shares gained more than 3% after Baird upgraded the stock to outperform from neutral and said it sees “meaningful opportunities ahead” for shares.
On Saturday, Warren Buffett’s Berkshire Hathaway reported a nearly 40% surge in year-over-year operating earnings for the first quarter. Berkshire also held its annual shareholder meeting.
While the peak of the first-quarter earnings season has passed, investors are still watching key companies set to report this week, including Dow member Disney on Tuesday and Uber on Wednesday.
Prices for the 10-year Treasury jumped, lowering yields to 4.50% from Friday’s 4.50%. Treasury prices and yields move in opposite directions.
Oil prices gathered 71 cents to $78.82 U.S. a barrel.
Gold prices were better by $28.40 to $2,337.