
The U.S. stock market is in doldrums, with the S&P 500 Index officially dropping into bear market territory on Friday. The brutal drubbing hasn't spared the world's richest, wiping away billions of their net worth.
Twitter Deal Takes Toll: Tesla, Inc. (NASDAQ:TSLA) chief executive officer Elon Musk has seen his fortunes shrink considerably in the current market sell-off.