Insider buyers were busy on Mar 16, 2021: 40 companies, $50.8 million in open-market purchases all told. RXDX topped the list with roughly $31.9 million, led by PERCEPTIVE ADVISORS LLC.
77 companies had three or more insiders buying in the past 30 days. C-suite buying: seven companies. One buy doesn't make a thesis, but it's a good place to start digging.