I get that. What I'm saying is that if you held, and it went down, you still wouldn't have lost anything as long as you didn't actually sell. Then, when there's an eventual rebound, you'd come out on the other end with an even higher gain. You probably had to pay a transaction fee to buy and then to sell. You'll also have to pay capital gains on what you made. Now, when you go to buy again, you'll have to pay another transaction fee, and then capital gains again when you sell later. And there's no telling when that rebound will be. It could shoot up tomorrow, and you'll miss out.