Compound, which was launched in June, is one of the largest such services and currently has about $11 billion in funds, according to tracker Defi Pulse. Other major players in this game are Balancer, Synthetix, Curve and Ren. Synthetix pioneered the idea. Today, these services hold more than $90 billion in locked user funds, which are funds that are used in lending. Supposedly, the holders of coins like Comp can participate in the governance and improvement of these networks. But the vast majority of people using them currently are speculators, trying to earn fairy-tale-like returns.