Back in 2017, John Griffin, a professor of finance at the University of Texas McCombs School of Business, noticed something strange. Griffin follows a totally different beat from typical business school finance profs who explore, say, how business cycles influence commodity prices or Fed policy sways the term structure of interest rates. The 6-foot-2 former high school football star views himself as a crusader for good, a moral sleuth who, as he tells Fortune, “looks to expose financial evil, to shed light on the world and expose dark things in the markets.” After the Great Financial Crisis, Griffin became a devout Christian. He has since dedicated his distinguished career to righteous forensic digging that’s unearthed abuses ranging from insider trading to mortgage fraud to the doctoring of bond ratings during the financial crisis.
As Griffin and Amin Shams, then a doctoral candidate at McCombs who’s joined Griffin in several gumshoe investigations, screened for misdeeds in 2017, they were fascinated to see that a little-known token that’s supposed to be backed one-for-one to the dollar was getting printed in large quantities. That clue led the pair to another: When new batches appeared, the price of Bitcoin seemed to jump. It looked like someone, or a group, was using that freshly printed “free money” to inflate Bitcoin’s price for their own profit. He and his coauthor Shams sifted through an incredible 200 gigabytes of trading data, equal to the troves that the Smithsonian Institution collects in two years, and followed sales and purchases from 2.5 million separate wallets.
