Here's what insiders bought in filings for Jul 16, 2021 — 35 companies and around $77.8 million in total. The biggest was ENVX (Enovix Corp), where Park West Asset Management LLC led about $30 million of buying.
Cluster buying (3+ insiders) is running at 67 companies this month. Nine 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.