Quote from riskfreetrading:
Warren understands options very well. What he did not understand before, and I think he now understands, is the existence and the effect of the random walker. With his margin of safety, he used to think that they is frontier in the south where Mr. Market cannot go with a high prob. Now he gets it (it being the effect of the random walker on the probs).
However what many people here did not seem to get is that Warren's losses are in the books only. A reason why people lose is that they are taken out of their positions, because of limited margin which is equivalent to a limited amount of cash.
So his losses, unless they cause his bankruptcy, would only cause a depression in stock, and then later a huge rally in the same stock is the stock were not to price the effect of random walker on the current losses.
Warren 's stock is a call option on the short puts , which can be played with a perpetual option.
The old man will win again. Time is his friend, as well as his brilliance to sell options outside an organized exchange where does not post collateral.
PS: I wrote in just few posts ago on this part of the forum that people do not generally understand margin rules. Warren understands very well.