Wall St mints strong gains on rosy economic data, encouraging Omicron update
* Tesla jumps as CEO Musk says he has sold 'enough' stock. * Pfizer rises as oral COVID-19 pill wins approval. Dec 22 - Wall Street's main indexes powered higher on Wednesday in a broad rally after upbeat economic data and hopeful developments about the severity of the Omicron coronavirus variant that is sweeping the world.The S&P 500 gained at least 1% for a second straight session, putting it near record levels, as volatility has ratcheted up in the last month of 2021 following the arrival of