One of Wall Street’s most-watched analysts is pumping the brakes on crypto-mania by saying that he’s sold off his Bitcoin. Of China, Cramer said, “I think they believe Bitcoin is a direct threat to the regime. “In our country, I think it’s outside of our control when it comes to ransomware,” Cramer said. “And I doubt that Colonial is the first company to pay ransomware. “Sold almost all of my bitcoin,” Cramer said.