Quote from Arnie Guitar:
Well thanks, but the problem is that it's been all luck, just dumb luck. I don't feel any skill in the least, just lucky. I feel like a deer in the headlights when things move against me. My knowledge on what to do as far as adjusting my position is non existent.
I feel like I'm playing musical chairs only selling bull put credit spreads, waiting for the music to stop and I'll have nowhere to sit down.
If you keep some room between your strikes you can leg down your short one to help avoid losses.
Lets say you sell the 1300 and buy the 1250
SNP approaches your 1300 and you shit your pants
Sell the 1290 or 1295 and use your proceeds from that short to help buy the 1300s back.
"Leg down"
I have to travel a lot for work so I NEED to do trades with high probability.
I have done a similar strategy as yours but I do monthly options on more volatile indexes (not etfs).
I look at a variety of parameters which generally include: yield of the spread, % out of money, and probability of closing below (I look at touching also, but focus more on closing; touching is somewhat redundant with the others).
Yield: Don't forget that yield itself tells you something. If you can't handle the greeks, remember yield itself is a signal. If you are selling high yield spreads, it means you are selling high risk spreads. Yield strongly corresponds to risk. On that note, doing 2.5% yield spreads shows that you are being relatively conservative.
% out of the money: Do you think the market might have a bad month? This is one reason why I prefer the monthly instead of the weekly. Its difficult for many to predict how the year will go. Some can do pretty well predicting the month. But the day or week? Not me, not really. I basically look at the economic picture and ask myself if the market has the potential to crash. If so, I take the month off. I happen to be taking the month off this round. Thought about doing a bear call spread, but figured Bernank might fuck me with QE3 or something so instead, I am just sitting it out.
Probability of touching/closing: Very useful. I say I kind of don't rely on touching because its somewhat redundant. If the probability of touching is high, the yield probably is as well and hopefully that already gave you a red flag. Since you are looking for 2.5% yield spreads, your probabilities should be alright.
Just manage your trades and maintain breathing room.