Why Elon Musk’s $420 tweet could signal gloom for the stock market

For much of last week, MarketWatch unofficially became MuskWatch — kind of like when IHop became IHob, but instead of burgers, we were busy flipping every relevant angle we could relating to Elon Musk’s “Am considering taking Tesla private at $420. Funding secured” tweet. Well, here’s another one: Musk’s tweet could signal market disaster