Matt Levine’s Money Stuff: The Stability of Algo Stablecoins

Algorithmic stablecoins

Here is how an algorithmic stablecoin works. You invent two tokens, call them Dollarcoin and Sharecoin. You list them on the crypto exchanges. Sharecoin trades for whatever price is determined by supply and demand. It might be $0.01 per Sharecoin, or $1, or $100, who knows. But Dollarcoin is supposed to trade at $1. If it trades at $0.99, you have some automatic process in which you print more Sharecoins and use them to buy Dollarcoins until it is back to $1. If it trades at $1.01, you have some automatic process in which you print some more ...