Elon Musk adds $1B to fortune with Twitter investment as shares soar

Tesla CEO Elon Musk likely added $1 billion to his already massive fortune this week after taking a 9.2% stake in Twitter. Musk disclosed the purchase in a Securities and Exchange Commission filing at the beginning of the week, sending Twitter shares soaring: The stock closed up 27% on Monday and continued to climb higher on Tuesday, its biggest rally since its trading debut in 2013.-- More...