On June 13, 2018, Elon Musk reported buying 72,500 shares of Tesla, Inc. (TSLA) at an average price of about $344, spending nearly $25 million. Tesla stock rallied about 7.5% over the next three days. But the big purchase by Musk begs the question: Is it usually profitable to follow famous CEOs into their own stocks when they buy shares?
Hornbeck industries (NYSE: HOS) stock has been on a tear since July 3 when a group of insiders disclosed acquiring a total of 24,550 shares at $4.00. HOS closed at $5.21 on June 29.
Two long-time directors of AbbVie Inc. (NYSE: ABBV) disclosed purchases of the pharmaceutical company’s stock as it pulled back 25% from all-time highs reached earlier this year. 
By Mark W. Gaffney For WhaleWisdom.com “Don’t tell me what you think, just tell me what’s in your portfolio.” Nassim Taleb in Skin in the Game In his most recent book Skin in the Game, Nassim Taleb asserts that if you offer an opinion, and someone follows it, you are morally obligated to...