I knew someone who quadrupled his holdings over the past two years and "got out" in time to keep the vast majority of it. So it does happen from time to time an

I knew someone who quadrupled his holdings over the past two years and "got out" in time to keep the vast majority of it. So it does happen from time to time and I'd say going from half million to 2 million is pretty great. I don't have the stomach for it though. However it's just an anecdote, most people people don't have the knowledge (or luck?) to do well other than to make moderate gains.