The US stock market's three major indexes opened higher on Monday, driven by positive sentiment in the technology sector. The S&P 500, a broad measure of the US stock market, gained 0.3% to 4,012.21. The Nasdaq Composite, which includes many tech companies, climbed 0.28% to 11,590.40. The Dow Jones Industrial Average, a barometer of 30 large US companies, advanced 0.24% to 33,128.79. The tech sector led the gains, with shares of Apple, Amazon and Microsoft all rising. Investors are betting that these companies will continue to benefit from the shift to online shopping, working and entertainment. Monday's gains come after a strong week for US stocks. The S&P 500 closed at a record high on Friday, while the Nasdaq and Dow also posted gains.