Insider buyers were busy on Oct 19, 2021: 19 companies, $29 million in open-market purchases all told. GRX topped the list with roughly $14 million, led by GABELLI MARIO J.
Cluster buying (3+ insiders) is running at 57 companies this month. C-suite buying: four companies. One buy doesn't make a thesis, but it's a good place to start digging.