Bitcoin (CRYPTO: BTC) is trading at its highest levels of the year as optimism surrounding a potential spot Bitcoin ETF continues to climb. Pomp Investments’ Anthony Pompliano expects the world’s largest cryptocurrency to rally hundreds of percent above its old highs during the next bull run. What To Know: Wednesday on CNBC’s “Squawk Box,” Pompliano said the greatest investors buy when others are selling and sell when others are buying. When it comes to Bitcoin and other risk assets, he said the smart money is buying. “The best investors in the world act completely differently than the herd. A…