24115992 submission Submission + - Think the Market's Efficient? Then P=NP. (ritholtz.com) Submitted by stevesliva on Wednesday September 21, 2011 @07:48PM stevesliva writes: Barry Ritholtz noted a new academic paper at his investing blog The Big Picture, which claims that if the majority of financial academics are to be believed, then P=NP. This disagrees with the conventional wisdom in computer science. As author Philip Maymin writes in the paper from Algorithmic Finance, "they cannot both be right: either P=NP and the markets are efficient, or P!=NP and the markets are not efficient."