(Bloomberg) -- The risks of creating a new way for retail investors to pour money into cryptocurrency markets are at the heart of a court fight Tuesday between Grayscale Investments LLC and a top US financial regulator.Most Read from BloombergMeta Plans Thousands More Layoffs as Soon as This WeekUS Banks Are Finally Being Forced to Raise Rates on DepositsTrump’s Threat of a Third-Party Run Is Undercut by ‘Sore Loser’ LawsTesla Slashes Model S and X Prices for the Second Time This YearHolding Cas