NO.PZ2020011101000039
问题如下:
The implied volatility for an ATM money option is reported at 20%, annualized. Based upon this, what would be the daily implied volatility?
选项:
解释:
ATM机不是天天能用么?为什么是252,不是365?
NO.PZ2020011101000039 问题如下 The implievolatility for ATM money option is reporte20%, annualize Baseupon this, whwoulthe ily implievolatility? σannual=252∗σily2\sigma_{annual}=\sqrt {252*\sigma_{ily}^2}σannual=252∗σily20.2=252∗σily20.2=\sqrt {252*\sigma_{ily}^2}0.2=252∗σily2σily=0.2/252=1.26%\sigma_{ily}=0.2/\sqrt 252=1.26\%σily=0.2/252=1.26% 条件和问题都是标准差,为什么对252也要开根
NO.PZ2020011101000039 这题为什么用252天?