“Look, I’m in this to make money. That’s what I do. The fact that it might hurt Ackman, I’m not going to run and cry and do penance. You might like to say that it’s the strawberry on top for me, that’s up to you.” [Barron’s, related, earlier]
The more frequently you monitor your portfolio, the more likely you are to observe a loss. This is likely to cause short-sighted decisions and could hurt your investment performance. If you are checking your portfolio more than once per quarter, you’re doing it too much.