24 companies had corporate insiders buying with their own money in filings dated Feb 1, 2021, about $12.9 million combined. YARW topped the list with roughly $10 million, led by PERCEPTIVE LIFE SCIENCES MASTER FUND LTD.
Six of the buys came from a CEO or CFO. Cluster buying (3+ insiders) is running at 56 companies this month. One buy doesn't make a thesis, but it's a good place to start digging.