The 'Greeks' of the book's title refers to the five factors that have the biggest impact on the price of an option - Delta (a change in the underlying instrument on which the option is based or from which it is derived), Rho (a change in the interest rate), Theta (a change in time), Vega (a change in the volatility of the underlying instrument) and Gamma (a change in delta). Most traders don't know how to use the 'Greeks' - factors that have the greatest influence on the price of an option - to trade more effectively. While many books on options dedicate a chapter to them in a very theoretical manner, no other book approaches the 'Greeks' from the perspective of using them as a unique trading opportunity. The author, who has trained thousands of traders (first at the Chicago Board Options Exchange, and now at the online brokerage, hedge fund and training firm, Peak 6) reveals how to unleash the power of the 'Greeks' to achieve investment success.