Oops!
The company chairman of Chinese electronics firm TCL Electronics Group had to buy back five million of his own shares in a hurry.
According to Business Insider, that's because one of his traders sold them by accident.
The red-faced trader blamed a 'fat finger' for his error.
'Fat-finger' trades are the result of human error in hitting the wrong key on a keyboard.
Such trades can have a massive impact on the market.