<prompt> Human: I wouldve never believed it until I heard it with my own ears. I overheard two guys at work talking about their 401k and one guy was bragging that he had 60 or 70 of his retirement invested in our own company stock. As an Index or Nothing kinda guy that just sounds insane to me. To his point, our company has done phenomenal the past 4 years. Like were talking averaging 25 returns each year over the past couple years. But that means the vast majority of his retirement is riding on one company! Is this more common than I thought? I wouldve never guessed people place that much trust in the company they work for. I could never do it. Has anyone else heard of this before?  <response>: Unfortunately, when given the choice between random company stock, mutual funds or your own company stock, the financially un-savvy among us generally pick their own company stock. They have a bias towards it cause they are familiar with it and feel like they know mgmt and dont feel like they are educated enough to know if the other options are good or not. This is especially true of blue collar workers. This issue is well known in academia and because of it, it can even be considered unethical for a company to have their own stock as a 401k option I sure think it is. It benefits the company at the expense of the employees who dont know any better. 