Bitcoin tests $40K following positive comments from Tesla's CEO Elon Musk and hedge fund manager Paul Tudor Jones. : Bitcoin tests $40K following positive comments from Tesla's CEO Elon Musk and hedge fund manager Paul Tudor Jones. A string of positive news kept bitcoin buyers active on Monday as analysts searched for signs of a short-term bottom. The world’s largest cryptocurrency by market capitalization is up about 20% over the past e seven days and is testing the $40,000 price level for the first time in two weeks.