The model’s fundamental reliance on constant volatility and log-normal distribution of asset returns proves inadequate for capturing the empirical reality of crypto markets. These foundational premises fail to account for the fat tails and sudden jumps characteristic of digital asset price action. Adjusting the volatility input alone does not resolve the structural deficiency in the underlying probability framework.
Volatility
A primary limitation is the model’s inability to price stochastic volatility, a key driver in options pricing for assets exhibiting high kurtosis. It incorrectly assumes volatility is a static input rather than a dynamic variable influenced by market sentiment and liquidity shocks. Traders relying solely on this framework often misprice options during periods of extreme market regime shifts.
Application
Extending the Black-Scholes framework to exotic crypto derivatives or options with non-standard features often requires significant, and sometimes arbitrary, calibration. The model struggles with assets lacking continuous trading or those subject to significant funding rate dynamics. Consequently, practitioners must pivot to more complex numerical methods for accurate valuation in these contexts.
