Diary: Seth Klarman

Some wise words from Seth Klarman, in Margin Of Safety, p 108:

When the underlying value changes, when management reveals itself to be incompetent or corrupt, or when the price appreciates to more fully reflect underlying business value, a disciplined investor can reevaluate the situation and, if appropriate, sell the investment. Huge sums have been lost by investors who have held on to securites after the reason for owning them is no longer valid. In investing it is never wrong to change your mind. It is only wrong to change your mind and do nothing about it.