lookback option

基本解释

He said: "I will look at the option of recalling some loan players. People like Jay Emanuel-Thomas, Kyle Bartley and Henri Lansbury could come back."
他说：“我将会看看是否会召回一些外租球员，比如JET，巴特利，兰斯布里可能回来。
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We are Familiar with some exotic options , such as Asian Options, Barrier Options, Reset Options, Executive Stock Option( ESO), Look-back Option, Reload Options.
常见的有亚式期权、障碍期权、再装期权、经理人员股票期权、回望期权、重置期权。
Meanwhile, Chris Smalling is beginning to make the right-back spot look like a natural option for him when he can’t play his normal role in the center of defense.
与此同时，斯莫林在右后卫位置上的异军突起，令他无法正常发挥其在后防线中的作用。

回望期权
But there is no the analytical solution for the American look-back option because of the complication of the initial and boundary conditions,so the characters for the solution of the American look-back option is blank.
但是由于美式回望期权初、边值条件的复杂性,至今无法求出其解析解,对其解析解的性质研究也甚少。
回顾期权