| Short 1 XYZ Sep 50 call @ $2.00, Long 2 XYZ Sep 60 calls @ $0.75 |
| Cost | $50 Credit |
| Maximum Loss | $950 |
| Maximum Profit | Unlimited |
| |
| Long 1 XYZ Sep 50 call @ $2.00, Short 2 XYZ Sep 60 calls @ $0.75 |
| Cost | $50 Debit |
| Maximum Loss | Unlimited |
| Maximum Profit | $950 |
| |
| Short 1 XYZ Sep 50 put @ $1.00, Long 2 XYZ Sep 40 puts @ $0.50 |
| Cost | $0 Even Money |
| Maximum Loss | $1000 |
| Maximum Profit | Unlimited |
| |
| Long 1 XYZ Sep 50 put @ $1.00, Short 2 XYZ Sep 40 puts @ $0.50 |
| Cost | $0 Even Money |
| Maximum Loss | Unlimited |
| Maximum Profit | $1000 |
Explanation and Application
Back spreads and ratio spreads are simply the mirror image of each other. Back spreads and ratio spreads are comprised of either both calls or both puts at two different strike prices in the same expiration month. If the spread has more long contracts than short contracts, it is a Back Spread. If there are more short contracts, it is a Ratio Spread. Any ratio of long to short options is possible, but to keep it simple we will deal mainly with 1 by 2s in this article, i.e. long 1 option and short 2 option ratio spreads, and short 1 option and long 2 option back spreads. When naming this type of spread, the lower strike is generally stated first, whether it is long or short, so, it's the Sep 50/60 call back spread or ratio spread, and the 40/50 put back spread or ratio spread.
Back spreads and ratio spreads can be executed for debits (you pay money) or credits (you receive money) or Even Money when there is no debit or credit. This occurs because the amount you pay for the long options in the spread is sometimes less than, equal to, or more than the amount you receive for the short options in the spread. This can be a bit confusing at times, because you might be a credit bid for a back spread or ratio spread.