I currently have 87k invested. This is, by far, the largest single investment I've ever made. I have about 25% of my entire net worth in this stock and I feel really good about it. I truly believe, even if this goes to zero, that the risk to reward ratio is worth it. It will not ruin me if I lose, but it will really hurt. However, if I'm correct and it goes to just 30 dollars I'll have made enough money to not worry about my children's education or my families financial security for a little while, no matter what happens to me. It's worth the risk. I wish I had more money available to put in, but I'm happy at this point.