Bitcoin and other cryptocurrencies plunged Wednesday after China took steps to further crack down on digital currency. Anxiety is spreading through the market, but Tesla CEO and crypto fanatic Elon Musk appears to be holding steadying ... for now. Tesla bought $1.5 billion in bitcoin earlier this year to hold on its balance sheet. In a tweet Wednesday, Musk posted a diamond and praise hand emoji — a reference to the term "diamond hands" used by WallStreetBets traders — to indicate that Tesla (TSLA) is holding on to its bitcoin position. YouTube star Mr. Beast responded to Musk's tweet, saying, "This is an emotional ... (full story)