Non-Stationary Time Series

Analysis

Non-Stationary Time Series in cryptocurrency, options, and derivatives present challenges due to evolving market dynamics and inherent volatility. Traditional statistical methods assuming constant statistical properties become unreliable when applied to these assets, necessitating adaptive modeling techniques. Accurate risk assessment and portfolio optimization require acknowledging that parameters like mean, variance, and correlation are not fixed over time, impacting the validity of standard valuation models. Consequently, practitioners often employ rolling window analysis or state-space models to capture time-varying characteristics and improve predictive accuracy.