Disbelieving Stanford researchers spent a year trying to disprove their findings that an AI financial analyst had dramatically outperformed human investors. They found nothing wrong with their work. Ed deHaan, a professor of accounting at Stanford Graduate School of Business, and his colleagues wanted to know if an AI bot — using nothing but public information — could beat the performance of financial fund managers between 1990 and 2020. Bottom line: AI beat 93% of managers by an average of 600%. “It was stunning,” deHaan says, adding that the AI analyst didn’t do anything particularly unusual. “While this is speculation, I would think there will always be a role for clever humans who can guide the process.”