本期金融数学术语：
Improving Option
An improving option has a maturity date T and a strike K like a plain vanilla option. in addition, a refixing date t prior to the maturity date as well as a factor alpha are stipulated at the start of the option. At the refixing date, the strike of the option is changed to alpha times the current spot if this is profitable for the holder of the option....
delicious
stumbleupon
-->