This particular trade is not gambling, you just pocket money for nothing, like a CD that pays 20% a month and matures at options expiration. It's a pure and simple options arbitrage trade, perhaps, the simplest one. You pocket the difference between put and call time premium that are supposed to be equal but are not for some weird reason, risk free, and that difference goes right into your pocket at expiration. It's stunning to see such things. You just can't lose on this, impossible. The position is equivalent to cash that pays you at expiration, gradually, as that time approaches. -g-
There are 2 ways to buy a put,
One is to buy a put.
The other is to short the stock and buy a call, which is called a synthetic put.
If the time premium for these 2 ways to buy a put is remarkably different, as it is in GM (the synthetic puts are virtually free at this point, while the puts are very expensive), you just short a put and buy a synthetic put, create a market neutral position of long and short a put, and pocket the difference in time premium until expiration <G> |