Decentralized Finance, or DeFi, was once the domain of solo crypto enthusiasts, coders, and retail traders. Based on blockchain technology and free of intermediaries such as banks and brokers, DeFi initially flourished as a "bottom-up" phenomenon in which finance was to be democratized. But in recent years, there has been a dramatic change in the profile. Institutional participants — hedge funds, asset managers, banks, and fintech companies — are entering the DeFi market in greater numbers, backed by capital, credibility, and waves of new innovation.