Define “Arbitrage” in the Context of Stablecoin Peg Maintenance.
Arbitrage is the simultaneous buying and selling of a stablecoin to profit from a minor price discrepancy between its market price and its $1 peg. If the stablecoin trades at $0.99, an arbitrageur buys it cheaply and redeems it for $1 of collateral.
If it trades at $1.01, they mint it by depositing $1 of collateral and sell it for $1.01. This action pushes the price back toward the peg.