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Measures of productivity reveal large differences across producers even within narrowly defined industries. Traditional measures of productivity, however, will associate differences in demand volatility to differences in productivity when adjusting factors of production is costly. I document...
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In a competitive product market, firms that buy their input have lower profit volatility than they would have if they were to make it. This effect on profit volatility is an important consideration in the firms' capital structure choices and their make or buy decisions when it interacts with the...
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In February 2018, the VIX index has seen its largest ever increase and has lead to significant losses for some major … linear causality in the VIX index and its derivatives during January and February 2018. Due to the shortcomings of … statistical inferences for stochastic volatility models, the dynamics of the volatility expectation index VIX remain controversial …
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This paper introduces a new approach to modelling the conditional variance in a multivariate setting. It is essentially a combination of the popular GARCH model class with a spatial component, inspired by generalized space-time models. The resulting spatial GARCH model takes into account both...
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This paper investigates the impact of volatility in profitability shock and capital adjustment cost on aggregate total factor productivity (TFP) in Chinese industries firms. To quantify the effects of volatility and adjustment costs on aggregate TFP, we recover key structural parameters in a...
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