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Co-Jumps, Co-Jump Tests, And Volatility Forecasting: Monte Carlo And Empirical Evidence, Weijia Peng, Chun Yao
Co-Jumps, Co-Jump Tests, And Volatility Forecasting: Monte Carlo And Empirical Evidence, Weijia Peng, Chun Yao
WCBT Faculty Publications
This study classifies jumps into idiosyncratic jumps and co-jumps to quantitatively identify systematic risk and idiosyncratic risk by utilizing high-frequency data. We found that systematic risk occurs more frequently and has larger magnitudes than the idiosyncratic risk in an individual asset, which indicates that volatilities from one sector are largely derived from the contagious effect of other sectors. We further investigated the importance of idiosyncratic jumps and co-jumps to predict the sector-level S&P500 exchange-traded fund (ETF) volatility. It was found that the predictive content of co-jumps is higher than that of idiosyncratic jumps, suggesting that systematic risk is more informative …
The New Accounting For Operating Leases: Unintended Consequences In The Airline Industry, Renata Bandeira, Bridget M. Lyons, Carolyn Trabuco
The New Accounting For Operating Leases: Unintended Consequences In The Airline Industry, Renata Bandeira, Bridget M. Lyons, Carolyn Trabuco
WCBT Faculty Publications
By 2020, new accounting rules for operating leases were applicable to publicly traded companies reporting under either the US Generally Accepted Accounting Principles (GAAP) or International Financial Reporting Standards (IFRS). The accounting authorities under both standards noted that the new rules were developed to increase the transparency of lease transactions to provide more relevant and comparable information. We compare two Brazilian airlines reporting under IFRS, Azul and Gol, with an operationally similar US airline reporting under US GAAP, JetBlue, to determine whether the new standards improve the ability to understand, evaluate, and compare performance, managerial decision making and credit metrics. …