 |  | Wall Street rises, boosted by strong economy |  | NEW YORK (Reuters) - U.S. stocks rose on Wednesday after stronger-than-expected U.S. economic growth outweighed concerns about escalating tensions between the United States and North Korea and the aftermath of Hurricane Harvey. | |  |  |  | New Uber CEO promises change, sees IPO in 18-36 months |  | SAN FRANCISCO (Reuters) - Uber Technologies Inc's [UBER.UL] new Chief Executive Dara Khosrowshahi told employees on Wednesday the ride-services company would change its culture and could go public in 18 to 36 months. | |  | |  |  | |  |  | Related Video | |  | |  | |  |  |  | Related News | |  | |  | |  |  |  |  |  | Get a jump on the day with our early morning summary of key news developments for the US markets, as well as global market news. Register Today |  | |  |  |  | The latest Reuters articles on M&A, IPOs, private equity, hedge funds and regulatory updates delivered to your inbox each day. Register Today |  | |  | » » MORE NEWSLETTERS |  | |