Not precisely analogous, but maybe the most famous case of this sort of thing is Gerald Ratner, who caused his jewelry company's stock to fall by 80% when he pu

Not precisely analogous, but maybe the most famous case of this sort of thing is Gerald Ratner, who caused his jewelry company's stock to fall by 80% when he publicly stated that his company's products were crap. Thus was born the phrase "doing a Ratner". This article contains other examples of CEOs devastating their businesses in similar ways. https://thehustle.co/gerald-ratners-billion-dollar-speech https://thehustle.co/gerald-ratners-billion-dollar-speech