There are now more than 120 hedge funds focused solely on bitcoin, digital currencies Data shared exclusively with CNBC from financial research firm Autonomous Next shows the number of funds investing in digital assets like bitcoin has grown rapidly to 124. Autonomous Next also estimates that the "crypto-funds" have about $2.3 billion in total assets under management. While several leading Wall Street banking executives remain skeptical about bitcoin, more seasoned money managers are moving into digital assets management. More than…