“…3 According to Li and Pearson (2007), Kim (2009), Jackwerth andRubinstein (2012), and Fan, Taylor, and Sandri (2018), the ad hoc Black-Scholes formula from a geometric Brownian motion outperforms other sophisticated models such as Merton (1976) and Heston (1993). In line with this, a geometric Brownian motion is still widely used for option pricing (Andersen, Lake, & Offengenden, 2016;Escobar, Mahlstedt, Panz, & Zagst, 2017;Miao, Lee, & Chao, 2014;Shevchenko & Del Moral, 2017;Sun, Chen, & Li, 2013;Wang, Wang, Ko, & Hung, 2016). 4 We allow wi to being negative.…”