One of the best ways to spot potential opportunity is with insider buying.

After all, who knows the company better than an insider?

Look at Docusign Inc. (DOCU) for example.

Over the last month, DOCU gapped lower after the company said Q4 revenue would come in between $557 million and $564 million, which is below expectations for $573.8 million. With a good deal of that negativity now priced in, CEO Daniel Springer just bought another $2.4 million worth of DOCU shares at $128.89.

Or, look at rare earth stock, MP Materials (MP).

Over the last few weeks, the company signed a deal with General Motors (GM) to develop a supply chain of rare earth magnets for electric vehicles.  Director Randall Weisenburger bought 86,901 shares of the MP stock for about $3.5 million.

Or, look at Petco Health and Wellness (WOOF)

After gapping from $25 to $18, the stock appears to have finally bottomed out.  Plus, CEO and Chairman Ron Coughlin just bought 23,290 shares for $400,821. That’s in addition to the $1.03 million worth of stock he picked up over the last year at an average cost of $21.63 a share.