"Sell a stock only when you have found a new stock that is a 50% better bargain than the one that you hold."

Previous Quote

One thing I want to emphasize is that, like any human being, we can discuss our view of the economy and the market. Fortunately for our clients, we don't tend to operate based on the view. Our investment strategy is to invest bottom up, one stock at a time, based on price compared to value. And while we may have a macro view that things aren't very good right now - which in fact we feel very strongly we will put money to work regardless of that macro view if we find bargains. So tomorrow, if we found half a dozen bargains, we would invest all our cash.

— Seth Klarman