I have one other Tesla investing anecdote that I wanted to share. I have a friend who was lucky enough to be able to invest a small amount in one of the Tesla venture rounds at about $5 per share. He sold at about $35 per share, making a seemingly huge 7X gain. His reason for selling had mostly to do with "locking in" his gains rather than fundamental concerns in the company's direction. In fact, he bought back in last year at $2xx.. We were having dinner a couple weeks ago and his wife was ribbing him about all the $ they would have made if they had held on. "Locking in gains" is emotionally satisfying -- everyone likes winning -- but can lead to bad investment decisions. So I will try to resist selling until I believe something has fundamentally changed with the investment prospects, when a better opportunity comes along or for diversification purposes.