What is a Put Ratio Spread?
Buy 1 Higher-Strike Put
Provides bearish exposure as the stock falls.
Sell 2 Lower-Strike Puts
Reduces cost, but leaves one extra short put obligation.
Mental model: “I expect a moderate drop toward a target, not a collapse.”
Critical risk: one short put remains effectively uncovered. If the stock collapses, losses can become very large.
Core structure
| Leg | Action | Strike | Contracts |
|---|---|---|---|
| 1 | Buy to Open Put | Higher strike | 1 |
| 2 | Sell to Open Put | Lower strike | 2 |
Worked example
Stock price: $100. You expect it to decline toward $90.
| Leg | Strike | Premium |
|---|---|---|
| Buy 1 Put | $100 | Pay $6.00 = -$600 |
| Sell 2 Puts | $90 | Receive $3.00 each = +$600 |
Net Entry Cost = $0
Maximum profit
Maximum profit occurs if the stock finishes at the lower short-put strike, $90.
Max Profit = ($100 - $90) × 100 = $1,000
This assumes the trade was entered for zero net premium.
Lower break-even
Lower Break-even = Lower Strike - Spread Width
Lower Break-even = $90 - ($100 - $90) = $80
Below $80, the trade begins losing money. Losses grow as the stock continues falling.
Expiration outcomes
| Stock Price | Approx. Result |
|---|---|
| $110 | $0 |
| $100 | $0 |
| $95 | +$500 |
| $90 | +$1,000 max profit |
| $85 | +$500 |
| $80 | Break-even |
| $70 | -$1,000 |
When to use it
- You expect a moderate decline toward a specific price.
- You do not expect a severe crash.
- You want a low-cost bearish structure.
- You fully understand assignment and downside risk from the extra short put.
Put Ratio Spread vs. Bear Put Spread
| Feature | Put Ratio Spread | Bear Put Spread |
|---|---|---|
| Short puts | 2 | 1 |
| Entry cost | Low / zero / credit possible | Usually debit |
| Max profit | Near short put strike | At or below short put strike |
| Max loss | Very large downside risk | Defined |
| Beginner suitability | Low | Much better |
Put Ratio Spread vs. Put Backspread
| Feature | Put Ratio Spread | Put Backspread |
|---|---|---|
| Typical ratio | Buy 1, sell 2 | Sell 1, buy 2 |
| Best view | Moderate decline | Very large decline |
| Big downside move | Hurts badly | Helps |
Assignment and capital risk
Either short put can be assigned before expiration. Since only one long put exists, the second short put creates extra stock-purchase obligation.
A sharp decline can require buying shares while the stock is falling, and buying-power requirements can expand quickly.
Safer defined-risk alternatives
Bear Put Spread: simpler and defined risk.
Put Butterfly / Broken-Wing Butterfly: can preserve a target-price thesis while controlling risk.
Pros and cons
Pros
- Low-cost entry possible.
- Strong payoff near downside target.
- Useful for moderate bearish view.
Cons
- Very large downside risk.
- Assignment risk on two short puts.
- Margin/buying power can expand quickly.
- A crash can turn profit into a large loss.
How to close it
Close as one multi-leg order when possible:
Sell to Close the long put + Buy to Close both short puts.
Common mistakes
- Thinking “zero cost” means “zero risk.”
- Ignoring the extra short put.
- Holding through a crash after the trade was initially profitable.
- Not calculating the lower break-even.
- Using the strategy around earnings without accounting for gap risk.
Beginner checklist
| Check | Question |
|---|---|
| ☐ Target | Do I expect a moderate decline rather than a crash? |
| ☐ Ratio | Do I understand that 1 long put does not cover 2 short puts? |
| ☐ Break-even | Where does the trade begin losing on a large decline? |
| ☐ Assignment | What happens if both short puts are assigned? |
| ☐ Capital | Can I handle the stock-purchase obligation? |
| ☐ Alternative | Would a Bear Put Spread be safer? |
Key takeaway
Put Ratio Spread = Buy 1 Higher-Strike Put + Sell 2 Lower-Strike Puts
Use it only when you expect a moderate decline and fully understand the extra short-put downside risk.
For beginners: a Bear Put Spread is generally easier to manage because risk is defined.