Lately I was working on credit spread strategy and saw many conflicts. The losers are far out-sized, and even with extremely high winning rates, can barely offset losses.
* If we sell .70 delta credit spreads. Assuming 100 width spread, and if we could collect 25% of width as credit, and lot size 100, gives expected value (% prob * return * lot size):
* I can change delta and go out further, but that will lower credit. I could try more credit, but that will push me towards ATM options. Even if my assumptions are wrong and we can get over 25% of spread width as credit, the overall calculation won’t change much.
* This calculation is based on no management. If we take profit early (and/or cut losses earlier), results could be worse – as the probability of touch is much higher than delta probabilities suggests. The moment we actively manage the positions, we might get knocked off the trades often, and the winners may make even less.
* Assuming that the IV is usually overstated - for indexes etc. IV been quite low and unless we wait long to place our trades, that advantage is minimal (any may work in both direction).
Is there any statistical study which proves that this strategy is profitable long term? If yes, under what scenarios? Any reason media is advertising this as a best strategy ever discovered?
* If we sell .70 delta credit spreads. Assuming 100 width spread, and if we could collect 25% of width as credit, and lot size 100, gives expected value (% prob * return * lot size):
- Winning trades approximately 0.70 * 25.0 * 100.0 = $1750.0
- Loosing trades approximately 0.30 * -100.0 * 100.0 = - $3000.0
- Net is net negative
* I can change delta and go out further, but that will lower credit. I could try more credit, but that will push me towards ATM options. Even if my assumptions are wrong and we can get over 25% of spread width as credit, the overall calculation won’t change much.
* This calculation is based on no management. If we take profit early (and/or cut losses earlier), results could be worse – as the probability of touch is much higher than delta probabilities suggests. The moment we actively manage the positions, we might get knocked off the trades often, and the winners may make even less.
* Assuming that the IV is usually overstated - for indexes etc. IV been quite low and unless we wait long to place our trades, that advantage is minimal (any may work in both direction).
Is there any statistical study which proves that this strategy is profitable long term? If yes, under what scenarios? Any reason media is advertising this as a best strategy ever discovered?