Dynamic Implied Risk Aversion Term Structure: An Empirical Analysis Based on Shanghai Stock Exchange 50 ETF Option

Table 5

Parameter estimation results of the Vasicek model.

			k
0.3290 (2.1908)	−0.4998 (−227.7800)	0.6580	−0.4998

and represent the level of significance of 1% and 5%, respectively, and the value of t is given in parentheses.