Bull Put Spread: How It Works, Example and Risks

A bull put spread sells a put and buys a lower-strike put for protection, collecting a credit. Traders use it when they expect the stock to stay above the short strike. The main risk is a drop below the long strike, which locks in max loss.

At a glance

Outlookbullish
Levelintermediate
Max profitNet credit × 100
Max loss(Width − credit) × 100
BreakevenShort strike − credit
Greeks exposurePositive delta, positive theta, negative vega
Ideal IV environmentHigh IV

Payoff diagram

Payoff diagram at expiration. Breakeven $93.8.BE $93.8$50$150

Worked example

Sell the $95 put for $2.00, buy the $90 put for $0.80: credit $1.20 ($120). Max loss ($5 − $1.20) × 100 = $380. Breakeven $93.80.

How to manage it

  • Close at 50% of max profit.
  • Size so max loss fits your risk budget.
  • Exit or roll if the short strike is threatened.

Risks

  • Max loss larger than max profit.
  • Gap risk through both strikes.
  • Early assignment on the short put.
Try it in the profit calculator

Questions

Is a bull put spread bullish?

Yes — it profits if price stays above the short strike.

How is max loss calculated?

Width minus credit, times 100.

Why use it instead of a cash-secured put?

Defined risk and far less capital.

Related

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