At Peridot Capital, I tend to ignore insider selling completely. Sure, a lot of sales inside a company can indicate management feels their stock is overpriced, but there are dozens of other reasons top brass sell stock, and they are never required to give the reason for their actions. Investors should be able to tell if a stock is grossly expensive or not on their own, if they indeed manage their own money, so insider selling data really can’t be relied upon.

Insider buying, however, I believe is crucially important. While I can make a laundry list of reasons why someone chooses to sell a stock, the reasons to buy are much fewer in number. In fact, there’s only one (to make money). It’s not surprising that studies have shown much more meaningful correlation to stock performance