yourquant_rick on Instagram: "Serial Autocorrelation Explained | Rick and Morty Style The market is not a coin flip. Serial autocorrelation measures whether price moves today are correlated with moves from yesterday, or two days ago, or a week ago. And if you look at the Dow Jones over the last 50 years, something massive shifted. From strong trends to aggressive mean reversion. Same market. Completely different memory. And if your derivative pricing model does not account for that, you are not