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Master time series analysis for quantitative finance: stationary stationarity testing (ADF), ARIMA return forecasting, GARCH volatility modeling, and autocorrelation.
Time series analysis in finance is the econometric discipline of analyzing sequential data points collected over time intervals to test stationarity, estimate autocorrelation structures, and forecast future prices, returns, or volatility.
A solid grasp of time series econometrics is essential for statistical arbitrage, systematic macro, and risk forecasting.
Non-stationary series produce spurious regressions with falsely inflated t-statistics and R-squared values, giving the illusion of predictive relationships that do not exist.