After two down sessions, Wall Street stocks opened higher Wednesday following strong earnings from Netflix and some other companies, while oil prices continued to gyrate. About five minutes into trading, the Dow Jones Industrial Average stood at 23,478.69, up 2.0 percent. The broad-based S&P 500 also gained 2.0 percent to 2,790.25, while the tech-rich Nasdaq Composite index advanced 2.1 percent to 8,434.04. jmb/cs