Volatility is a key determinant of derivative prices and optimal hedge ratios. This paper examines whether there are structural breaks in commodity spot return volatility using an iterative cumulative sum of squares procedure and then uses GARCH (1,1) to model volatility during each regime.

Taylor (1979) posited that a central bank faces a tradeoff between the volatility of the output gap and volatility of inflation; this trade-off has become known as the Taylor curve. Thus, the Taylor curve necessitates that the correlation between the volatilities of inflation and the output gap...

The debate regarding rising temperatures and CO₂ emissions has attracted the attention of economists employing recent econometric techniques. This article extends the previous literature using a dataset that covers 800 000 years, as well as a shorter dataset, and examines the interaction...

This paper proposes a latent factor approach based on a state-space framework in order to identify which factor, if any, dominates price fluctuations in the Chinese stock markets. We also illustrate the connection of such stock price decomposition with several general equilibrium asset pricing...

This paper employs a century of the UK stock market data to examine various sate-space model specifications and Vector Autoregression (VAR) models to investigate how much expected returns and expected dividend growth contribute to movements in the UK price–dividend ratio. We show that the...

This article examines various state-space and VAR model specifications to investigate the contributions of expected returns and expected dividend growth to movements in the price-dividend ratio. We show that both models involve serious inference problems that need to be dealt with carefully. We...