Vanguard Group, the world’s second-largest asset manager, has decided to allow ETFs and mutual funds that primarily hold cryptocurrencies to be traded on its platform, reversing a longstanding position.Starting on Tuesday, Vanguard will allow ETFs and mutual funds that primarily hold select cryptocurrencies, including Bitcoin, Ether, XRP, and Solana, to be eligible for trading on its platform. It’s a compromise that belies the firm’s long-standing view that digital assets are too volatile and sp...