What is a Bear Put Spread?
Buy to Open Higher-Strike Put
Creates bearish exposure and gains value as the stock falls.
Sell to Open Lower-Strike Put
Generates premium and lowers the net cost of the bearish position.
Mental model: buy downside protection/profit potential, then sell some farther-down downside to make the trade cheaper.
When to use it
| Situation | Fit? | Why |
|---|---|---|
| Expect a moderate decline | Good fit | The spread profits from downside without requiring a collapse. |
| Want lower cost than a Long Put | Good fit | The short put offsets part of the long-put premium. |
| Want defined maximum loss | Good fit | Maximum loss is the net debit paid. |
| Expect a massive crash | May be too limiting | Profit is capped below the short-put strike. |
| Expect flat or rising stock | Poor fit | The spread can lose its full debit. |
Worked example
Assume a stock trades at $100 and you expect it to fall toward $90.
| Leg | Action | Strike | Premium |
|---|---|---|---|
| 1 | Buy to Open Put | $100 Put | Pay $6.00 = -$600 |
| 2 | Sell to Open Put | $90 Put | Receive $2.00 = +$200 |
Net Debit = $6.00 - $2.00 = $4.00/share = $400
Maximum profit, loss, and break-even
Maximum Loss = Net Debit = $400
Spread Width = $100 - $90 = $10
Maximum Profit = ($10 - $4) × 100 = $600
Break-even = Higher Put Strike - Net Debit
Break-even = $100 - $4 = $96
What happens at expiration?
| Stock Price | Approximate Outcome | Meaning |
|---|---|---|
| $105 | -$400 max loss | Both puts expire worthless. |
| $100 | -$400 max loss | The long put has no intrinsic value. |
| $96 | Break-even | The long put is worth $4/share, offsetting the debit. |
| $94 | About +$200 | The long put has $6/share intrinsic value. |
| $90 | +$600 max profit | The spread reaches its full $10 value. |
| $80 | Still +$600 | Further downside is offset by the short put. |
Why profit is capped
The long $100 put benefits as the stock falls, but the short $90 put creates an obligation below $90. Once the stock reaches $90 at expiration, the spread is worth its maximum width of $10.
Key trade-off: lower cost than a Long Put, but no additional profit from declines below the short-put strike.
Bear Put Spread vs. Long Put
| Feature | Bear Put Spread | Long Put |
|---|---|---|
| Cost | Lower | Higher |
| Maximum loss | Net debit | Premium paid |
| Maximum profit | Capped | Can become very large as stock falls |
| Best market view | Moderately bearish | Strongly bearish |
| Short-option obligation | Yes, lower-strike put | No |
How to choose strikes
| Choice | Typical Effect |
|---|---|
| Higher long-put strike | More expensive, stronger downside sensitivity. |
| Lower long-put strike | Cheaper, but needs a larger decline. |
| Short put closer to long put | Lower cost, but lower maximum profit. |
| Short put farther away | Higher cost, but more downside profit room. |
Expiration considerations
| Expiration | Potential Advantage | Potential Drawback |
|---|---|---|
| Shorter-dated | Lower upfront debit | Less time for the bearish thesis to work. |
| Longer-dated | More time for the stock to decline | Higher net debit. |
Pros and cons
Pros
- Lower cost than a comparable Long Put.
- Defined maximum loss.
- Clear break-even and profit target.
- Useful for a moderate bearish view.
- Can be more capital-efficient than shorting stock.
Cons
- Maximum profit is capped.
- The full debit can be lost.
- Requires enough downside before expiration.
- Two legs add complexity.
- Short put can create assignment considerations near expiration.
How to close it
Open: pay a net debit.
Close: sell the spread for a net credit.
Close: sell the spread for a net credit.
Profit = Closing Credit - Opening Debit
Example: open for $4.00 and later close for $7.00.
Profit = ($7.00 - $4.00) × 100 = $300
Common mistakes
- Choosing a short put strike above your realistic downside target.
- Paying too much debit relative to the spread width.
- Using an expiration that is too short for the expected decline.
- Assuming the spread keeps gaining below the short strike.
- Ignoring bid/ask spreads on both legs.
- Holding into expiration without understanding exercise and assignment.
Beginner checklist
| Check | Question |
|---|---|
| ☐ Direction | Do I expect a moderate decline? |
| ☐ Long put strike | Where should bearish exposure begin? |
| ☐ Short put strike | At what price am I willing to cap profit? |
| ☐ Net debit | What is my maximum loss? |
| ☐ Maximum profit | Is the capped reward worth the risk? |
| ☐ Break-even | Can the stock realistically fall below it? |
| ☐ Expiration | Does the thesis have enough time? |
| ☐ Liquidity | Are both legs liquid? |
Key takeaway
Bear Put Spread = Buy Higher-Strike Put + Sell Lower-Strike Put
Use it when you are moderately bearish and want lower cost and defined risk in exchange for capped downside profit.