21:49 (1.3X)
high liquidity -low liquidity=0.5%,4 investment-5 investment=2.5%,4 investment(4.0%)=)maturity (一致)+high liquidity+low default risk 。5investment(4.0%)=)maturity (一致)+low liquidity+high default risk 。5-4=2.5%=(low-high)liquidity+(high-low)default risk.因为(low-high)liquidity=-0.5%,所以(high-low)default risk.=3%
这样做法为什么不对?