Quote from ChrisM:
Mav,
I was mostly talking about short calendars, but additionally referring to few others. But let`s use it as an example:
how do you get unlimited profit potential trading calendar shorts ?
If you scalp gamma to rent vega for free (as you wrote) you fade the moves by trading against the market, right ? So, once you get breakout how do you profit then ? If by changing the rules and staying long delta then it is pure speculation. On other hand if you stay neutral then the profit is not unlimited ?
Chris,
Yeah, I guess I didn't explain to you exactly how I trade short calendars. The way I trade short calendars is pretty simple. They are generally really short trades. Most of them I put on for one day.
Let me give an example. Let's the vol on IBM has been running up going into earnings from 30 to 45 in like 2 weeks which is a pretty big move for IBM. I would put the short calendar on the day before they reported. I would take it off either at the open the next day or at the close the next day.
What I am looking for here are two things. One, I am looking for a gap move in IBM on the numbers which happens about 80% of the time. This is good for me since I am long the front month and have a lot of gamma here. Two, I am looking for a Vol implosion on the back month. Say from 45 to 35 where I am short vega back there. So in a perfect situation, IBM would come out with numbers, good or bad, gap down 5 pts the next day and the vol would come in 10 ticks.
Since I am putting this spread on for a credit here, the purpose is to earn the credit and possibly expand it. When done right, this trade can be a huge moneymaker with very very little risk. I mean the risk to reward on this trade is sick. Because I am only holding for it for day the return on equity is just monstrous. The big risk you have on short calendars is with your negative vega on the back month. But since I am only holding this for a day, that's a non factor. Also the odds of me getting that gap move are huge which is perfect for my long gamma.
The worst case scenario for me is that numbers come out, the stock opens flat and the vol doesn't react although that would be very odd if the vol had a huge runnup and didn't come in after a flat open. Really though, I can't talk enough about the risk to reward on this trade. It's really what options trading is all about. The scary thing is you could put on 500 of these a year and maybe lose money on 10 of them. Of course a lot of these will be break evens which is not a big deal. But it's really hard to get hurt on these trades. And I mean really hard, although I guess as a disclaimer I should say that I bet somebody on these boards could find a way to get hurt. LOL.
