I'm not disputing your point about emotions getting in the way of making sound decisions. But again, your "piss off factor" comment about splits above, is showing AGAIN, that you fundamentally misunderstand the concept of a stock-split. All things being equal, selling a stock just prior to or just after a stock split, generally, has no impact on ones return on that stock. And the assertion from your original post that having sold off a stock prior to a 4 to 1 split and missing out on an 80% return as opposed to your 20% return - all things being equal that is not what you missed out on, so why to you keep doubling down about a "piss off factor." In your example of a 4 to 1 split, all things being equal, you did not miss out on anything. If you owned one share that splits 4 to 1 and you sold that one share prior to the split for a 20% return, does not mean you missed out on making a 20% return on 4 shares if you held that share to get the 4 to 1 split. In fact, all things being equal, if you didn't sell and got the 4 to 1 split, your return on the original one share would turn into a 5% return on each of 4 shares - i.e. STILL 20%! There literally is no reason to have a "piss off factor" because all things being equal you did not actually leave money on the table! So take comfort in the fact that in all actuality and all things being equal, you did not miss out on anything from selling a stock prior to a split.