The strategies covered earlier were designed for different degrees of bearishness.
The difference is important.
If you expect the market to decline only moderately, a conventional bearish spread can be appropriate.
But if you expect a large downward move, a Put Ratio Back Spread can provide greater downside participation.
The strategy is essentially the bearish counterpart of the Call Ratio Back Spread discussed earlier.
The classic Put Ratio Back Spread uses:
The ratio is therefore:
1 : 2
For every one Put sold, two Puts are purchased.
The strategy can also be scaled proportionally:
The important point is to maintain the 2:1 ratio between the long and short positions.
The options should generally have the:
At first, selling a Put when you are bearish may seem strange.
The reason is similar to the Call Ratio Back Spread.
The premium received from selling the ITM Put helps finance the purchase of two OTM Puts.
This creates greater downside exposure.
If the market falls sharply, both long Puts can gain substantial value.
If the market rises significantly, all the Puts can expire worthless, allowing the trader to retain the initial credit.
However, a moderate decline can create the strategy's loss zone.
So once again, the size of the move matters.
Suppose:
This is a strongly bearish view.
You could construct the strategy by:
For example:
Sell 7,900 PE
and
Buy 2 Γ 7,700 PE
The exact premium received and premiums paid determine the net credit or debit and the resulting payoff.
The important concept is the structure:
One Put sold against two lower-strike Puts bought.
The Put Ratio Back Spread has three broad outcome zones.
If the market rises above the short Put's strike, all three options can expire worthless.
The trader retains the initial net credit.
Therefore, the profit is limited.
This is the difficult zone.
The short ITM Put begins generating a liability as the market falls.
The two OTM Puts also gain value, but initially they may not gain enough to fully offset the loss on the short Put.
This creates a maximum loss zone.
This is where the strategy becomes attractive.
Both long OTM Puts gain value as the underlying declines.
Because you own two Puts against only one short Put, the additional downside exposure can generate substantial profits.
Since the underlying theoretically has no fixed lower limit above zero, a large decline can produce significant profit potential.
The strategy is therefore suited to traders expecting a major downward move.
Consider what happens during a sharp decline.
The short ITM Put loses value as the underlying falls.
But you own two lower-strike Puts.
Once the market moves sufficiently below the long Put strikes, both long Puts begin participating strongly in the decline.
The gains from the two long Puts can then outweigh the loss from the single short Put.
This creates the characteristic payoff of the Put Ratio Back Spread:
Strong fall β Increasing profit
The farther the underlying declines, the more valuable the two long Puts can become.
Suppose the market unexpectedly moves higher.
All the Puts may expire worthless.
In that situation:
Therefore, the upside-side profit is limited to the initial credit.
This is the opposite of the large downside profit potential.
The most important risk to understand is the moderate decline.
A trader might correctly predict:
"The market will fall."
But if the market falls only a little, the strategy may still lose money.
Why?
Because the short ITM Put becomes increasingly valuable as the market falls.
The two OTM Puts are also gaining value, but until the market moves sufficiently below their strikes, their combined gains may not fully offset the short Put's loss.
Therefore:
Correct direction does not automatically mean a profitable trade.
The expected magnitude of the decline is critical.
If the underlying expires above the short Put strike, all the Puts can expire worthless.
The trader then retains the initial credit.
Therefore:
Maximum Profit on the Upside = Net Credit
This is a limited profit.
The strategy has a defined maximum loss in the middle range.
The exact maximum loss depends on:
The general relationship is based on the difference between the short Put strike and the long Put strike, adjusted for the initial credit.
Therefore, maximum loss should always be calculated before entering the trade rather than assuming that the 2:1 structure automatically limits risk.
The Put Ratio Back Spread can have two breakeven levels, depending on the exact strikes and premium structure.
This is similar to the payoff behaviour of the Call Ratio Back Spread.
The lower breakeven is particularly important because the market needs to fall sufficiently for the two long Puts to overcome the loss created by the short Put.
Once the market moves beyond the lower breakeven, the strategy can begin generating increasing profits.
The defining feature of the strategy is:
Buy 2 Puts for every 1 Put sold.
This creates greater downside exposure.
For example:
Sell 1 Γ 7,900 PE
Buy 2 Γ 7,700 PE
The two long Puts are what allow the strategy to benefit substantially from a sharp fall.
If you instead bought and sold the same number of Puts, you would be creating a conventional Put Spread rather than a Put Ratio Back Spread.
Both strategies can be bearish, but they are designed for different expectations.
| Feature | Bear Put Spread | Put Ratio Back Spread |
| Market view | Moderately bearish | Strongly bearish |
| Structure | Buy ITM Put + Sell OTM Put | Sell 1 ITM Put + Buy 2 OTM Puts |
| Ratio | 1:1 | 1:2 |
| Profit potential | Limited | Potentially substantial on a sharp fall |
| Best suited for | Moderate decline | Large decline |
The key distinction is the magnitude of the expected move.
The Put Ratio Back Spread is most relevant when you expect:
The strategy is therefore more directional than a standard Bear Put Spread.
You should have a stronger bearish conviction before using it.
Large price movements can occur around important events.
For example, a stock may be approaching:
If you believe the event could result in a sharp decline, a Put Ratio Back Spread may be considered.
However, the strategy still needs careful strike and premium selection.
The existence of an event alone does not make the strategy automatically suitable.
Volatility is particularly relevant for ratio back spreads because you are:
The long options provide greater exposure to changes in implied volatility.
When there is sufficient time remaining before expiry, an increase in volatility can generally be beneficial to a ratio back spread because the two long options can gain more value.
However, the exact impact depends on:
Therefore, volatility should be considered alongside the expected price move rather than in isolation.
The Put Ratio Back Spread can be remembered through a simple sequence:
Strong bearish view
β
Sell 1 higher-strike Put
β
Buy 2 lower-strike Puts
β
Use the premium received to help fund the long Puts
β
Limited profit if market rises
β
Loss possible if market falls moderately
β
Substantial profit potential if market falls sharply
This is the central idea behind the strategy.