(Bloomberg) — Big Bitcoin holders are moving their wealth from the blockchain onto Wall Street’s balance sheet. A new generation of ETFs is giving the crypto rich a novel way to fold their digital fortunes into the regulated financial system — without selling, and through funds run by big asset managers like BlackRock Inc. Most Read from Bloomberg A regulatory change this summer opened the door for large investors to hand their Bitcoin (BTC-USD) to an ETF in exchange for shares of the fund. It’s called ...