Time-Varying GARCH Models

Definition

Time-Varying GARCH models serve as statistical frameworks designed to capture the heteroskedastic nature of financial returns by allowing conditional variance to evolve as a function of past squared residuals and previous variance states. In the context of cryptocurrency, these models address the non-constant volatility clusters frequently observed in digital assets compared to traditional equities. Analysts deploy these techniques to estimate dynamic risk parameters that remain responsive to the high-frequency regimes typical of decentralized market structures.