“Forecast Volatility—One of the four basic interpretations of volatility. A prediction, or 'best guess,' regarding the degree of price movement, or volatility, that can be expected for a given secur
交易期指（Index Futures），主要是应用期货交易的Natural Leverage（X6-X20），同时有税收Advantage（Index Futures 60%的收益算Long Term Capital Gain）。
由于美股期指有仓位限制（Open Position Limit），期指
