Summary List PlacementAndreessen Horowitz's early bet on Coinbase, a popular exchange for buying and selling digital assets, has allowed the firm to grow a stake now worth more than $6 billion, based on the company's market cap on June 16. The venture capital firm's haul is big enough to return its last two mega-funds that closed — a seventh flagship and second growth fund totaling $4.5 billion — Crunchbase News' Gené Teare and Marlize van Romburgh reported. Coinbase is its largest exit to date, per Crunchbase data.