 The second half of 2024 is here. Investors got a boost on Wall Street from the tech sector. Here's business reporter Jason Brooks. Apple and Tesla were the big winners as the tech sector continued to do the majority of heavy lifting in the stock market in 2024, with the Nasdaq rising more than 18% during the first half of the year. The Dow gained 50 points to 39,169. The Nasdaq gained 146 points to 17,879.