erolbicero/rOptionsTools
Implementation of Model Free Implied Metrics from Bakshi, Gurdip S. and Bakshi, Gurdip S. and Kapadia, Nikunj and Madan, Dilip B., Stock Return Characteristics, Skew Laws, and the Differential Pricing of Individual Equity Options (July 2, 2001). Available at SSRN: https://ssrn.com/abstract=282451 or http://dx.doi.org/10.2139/ssrn.282451
R