Insider buyers were busy on Jul 21, 2021: 24 companies, $71.3 million in open-market purchases all told. At the top: AFIB, $45 million bought, with ORBIMED ADVISORS LLC as the largest buyer.
66 companies had three or more insiders buying in the past 30 days. Five of the buys came from a CEO or CFO. One buy doesn't make a thesis, but it's a good place to start digging.