Coinbase is reportedly in advanced negotiations to acquire Deribit, the largest Bitcoin and Ether options exchange, in a deal valued between $4 billion and $5 billion. This acquisition, if finalized, would significantly enhance Coinbase's derivatives platform, pending regulatory approval in Dubai. Deribit currently controls 80% of the options market, making it a key player in the cryptocurrency derivatives space. The talks are at an advanced stage, and the acquisition would mark one of the largest in the cryptocurrency sector to date.