Amber Group's $100 million fundraising round is the latest sign of institutional interest in crypto startups. : Crypto investment startup Amber Group has hit a $1 billion valuation after a $100 million fundraising round that saw famed hedge fund Tiger Global Management invest in the Coinbase-backed company. The round was led by Chinese bank China Renaissance, while Tiger Brokers, Arena Holdings and DCM Ventures also injected money, Hong Kong-based Amber Group said on Sunday. Amber Group is now worth more than 10 times what it was in 2019, when the company raised $28 million at a $100 million valuation.