How Does the Market Maker Adjust the ‘Risk-Free Rate’ in Crypto Option Pricing?
Since a true risk-free rate is difficult to define in the crypto space, market makers typically use a proxy. This proxy is often the interest rate for borrowing or lending the stablecoin (e.g.
USDC, USDT) used as collateral or settlement currency, or the yield on a highly liquid, short-term fiat instrument, adjusted for any perceived credit risk.