Alessia Pierdomenico / Reuters
- Ted Gioia made a $6 million error when he cashed in his Apple stock about 25 years ago.
- The jazz critic bought 300 shares in the 1980s that would have been worth $6.4 million today.
- The former management consultant missed out on making around 700 times his money: "Sigh!"
A management consultant turned jazz critic made a $6 million mistake when he sold Apple stock about 25 years ago.
Ted Gioia first invested in the technology titan because he was an avid user of its products, he told Markets Insider this week. While studying for a MBA at Stanford in the 1980s, he accepted a job offer from Boston Consulting Group, and received an Apple II desktop computer as part of his signing bonus.