Quote from mbradley:
Eldrige, I would hate to present myself as a guru, but here goes an example.
First of all, we have to get rid of the ideal of locking in a loss. Trading IS a losing game. Absolutely. Assume all trades are losers the minute you put them on. Now, try to minimize the loss so you can survive to make money.
I specifically do the short QQQ straddle in order to do nothing BUT handle risk. The trade (selling at the money calls and puts) is non directional. I use this trade to keep me mentally sharp on risk, because the the whole trade IS risk management. Nothing else.
So, if I sell the calls and puts, I look at my computer and it says im delta neutral. Good. Im also short some Gamma. Bad (to revue, the short gamma means that your deltas move OPPOSITE the underlying. So if QQQ goes higher, you are getting more Delta negative, or shorter.)
So, I start Delta neutral. Now, there is a big rally. The QQQs go higher. My short calls are going against me, but my short puts are working for me, so it should be no problem. Right? Wrong. This is the effect of gamma. The deltas on the calls are increasing at a faster rate than the deltas on the puts are decreasing. So, now I have to get to Delta Neutral. Remember - that is my job. To stay neutral. The deltas on the short calls are getting greater, so I am getting more delta negative away from neutral. So I sell puts. This is a delta positive trade. I sell enough puts to even me up.
I check the position once in the mid morning and once in the afternoon. I probably adjust it one to three times a week.
Now, to alleviate Mavs fear of the negative gamma piling up. As I try to stay delta neutral, if I see the gamma is getting too high, then instead of selling the puts, I'll start buying back the calls.
I would never do this on a stock. Only an index. One big move could blow you out in a stock. Plus my position size is small. So, if Im keeping only 20K in an option accoung, I'll only sell up to 10-14k of margin use so I have margin to sell more/buy back.
Again, the whole trade is risk management. It is not about locking in a loss. In fact, the fear of locking in a loss is the number one killer of traders. Been there and done that. Lock in that loss and love it. Your job is not to avoid locking in the loss, it is survive so that the edge you have does not rest on one coin flip, but five hundred coin flips in which you win 300 of them.