So here's the spread I've been doing for just over 2 years now:
- Identify 10-20 stocks where the 2 S.D. put is close to a support level
- Sell a weekly put for each stock, one week out, typically for ~$0.40 (usually a 95%+ win rate)
- Depending on the stock this can be between 5-15% OTM
- Buy the ~$0.05 put for protection (this has been hit 11 times in ~1500 trades)
- Collect the ~$0.35 premium
I keep running the max loss scenarios and it still seems to be an acceptable risk, given the probabilities.
IB margin reqs for options this far out are usually pretty much the same as margin req. for the underlying stock, so I would be OK if every stock was assigned.
I can't help but feeling that I've just been lucky but even the Feb 18 crash didn't dent performance. The stats on the trades have played out pretty much as you'd expect but still the performance is great: +37% in Yr1 and +29% in Yr2.
Have I just been lucky?!?
nln1972 yes you've been lucky, but yes it's a sound strategy for certain types of traders.
I have no time to trade atm, but last year was testing vertical credit spreads, bull put and bear call and it looked very promising. Different parameters though, I was testing 6wks to expiry, closer to money on sold leg and a narrower spread. It's very profitable - if you're correct enough times!.
The edge is not so much in the option pricing, but in your ability as a technical analyst. The setup I was using suited my skills, with enough margin for error and ability to close out the trade early without much damage if one was going against me. (Your weekly durations don't give this latter opportunity).
In Ironchef's example you are risking (AAPL 165 - 155 x 100) $1,000 per trade to make $35 (exact maths not relevant).
So ($1,000/35= 29) you have to win 29 times for each $1,000 full loss to breakeven (as adjusted for trades you close early, which with weekly duration say nil).
You are using a crude form of technical analysis in support levels, combined with a bit of distance to current price relative to the weekly duration and working long side of the market only with your puts.
You need to simply monitor your win rate, which you can do so confidently with the high number of trades being done. But that's where I think you've been lucky. I suspect (from very limited info-apologies if misreading) that your technical skill is not sophisticated enough to maintain a sufficient win rate to make this strategy sustainable long term. You probably wont 'blow up' but rather find that your profitability will grind down over time e.g. a persistent bear market or high market volatility would make it hard for your approach.
Your strategy has suited the current market phase. I think you'll eventually need to adjust the trade parameters with longer durations and some call side spreads to keep it working. (Or bank some profit regularly instead of reinvesting and just walk away from the table when it stops).