Quote from Daal:
If catching knifes is not profitable then there are excess returns to be earned by shorting knifes. Its contradictory to not be short JPM then
I already know the reply 'but its too uncertain, I have no confidence either way' exactly, its in this type of situations that stocks are sold bellow their fair value, its a human value to want to step way from this situation
Furthermore if there is one asset where buying declines is likely to be profitable it is in stocks as they are historically mean reverting
I think the point is that a 10% price fall, some of which is actual value destruction, does not make something 'good value'. Fair value cannot be determined precisely at the best of times, so a mere 10% fall cannot be said to have made something cheap - 10% up or down is within the margin of error of even the most accurate value assessments.
And there is increased risk and the fact that the intrinsic value has fallen somewhat (management controls weaker than expected; risk that the trade blows up spectacularly; potential loss of confidence in the CEO or even the bank, causing a liquidity crunch).
That is why you need a large margin of safety - Graham recommended a 50% discount to reasonable estimates of fair value.
