CompoSecure (CMPO) was Smart Insider's stock pick of the week after the company's Chair David Cote bought $13.8 million worth of CompoSecure's shares at an average price of $15.74 apiece in February.

Cote also bought $372 million worth of company shares in September and took a control position, Smart Insider said in a note Tuesday.

"Six months after that transaction, it is interesting to see additional large purchases from him, even after the stock has doubled and is at a multi-year high," the note said.

Smart Insider ranked the stock +1, or strong positive signal, on Feb. 24.