李同学2018-11-10 22:06:04
解释里说As spreads widened, the exogenous spread approach would reflect this in higher liquidity adjusted VaR, but the constant-spread approach would not. constant-spread approach不也是spread增加,LVaR增加么。另一句说In the endogenous price approach, a higher value for the price elasticity of demand would result in higher VaR. Elasticity增加不应该LVaR减少么
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Cindy2018-11-13 09:34:59
同学你好,constant spread approach假设spread是一个恒定的值,如果spread在变的话,那么它影响的是random spread approach的计算
弹性E=(ΔP⁄P)/(ΔN⁄N),弹性本身是一个负值,如果弹性增加的话,根据公式"LVaR"=VaR×(1-ΔP/P)=VaR×(1-E×ΔN/N),LaR应该增加才对
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