Causality And Volatility Spillover Effects On Sub-sector Energy Portfolios
Gormus, N. Alper
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During a time of extensive crises related to energy sources, in particular fossil fuels, IPOs for alternative energy-related companies are a common occurrence. As new industries are created or old ones are revised, investors, who constantly are trying to update their portfolios for hedging their risk, face new challenges. The purpose of this study is to aid investors in market anticipation, forecasting, and portfolio diversification through shedding some light on the inner dynamics of the select asset markets versus sector-specific energy companies. Although energy companies related to fossil fuels such as oil, coal, and natural gas are previously studied, alternative energy companies have been minimally tested. This study analyzes the inner dynamics of sub-sector energy company portfolios such as petroleum, coal, natural gas, solar, nuclear, wind, and biofuel with respect to each other as well as asset markets commonly used in literature. The analysis includes Toda-Yamamato Granger Causality Tests, Generalized Impulse Responses and Volatility Spillover models.