NEW YORK (AP) — Stocks shot 3.4 percent higher on Wall Street Wednesday as investors chose to focus on the optimistic side of data about the coronavirus outbreak’s trajectory. It’s the latest about-face in this brutally volatile stretch for the U.S. stock market, which has flipflopped between gains and losses for six straight days. The up moves have recently been bigger than the downward swings, though, amid signs that deaths and infections may be nearing a peak or plateau in some of the world’s hardest-hit areas. The S&P 500 has jumped nealry 23 percent since it hit a low two and a half weeks ago.