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Bear Put Spread Calculator

bearish

A bear put spread is a vertical debit spread: you buy a higher-strike put and sell a lower-strike put at the same expiration. It's a cost-efficient way to bet on a stock declining with defined risk.

Max Profit
(Width of strikes − Net debit) × 100
Max Loss
Net debit paid × 100
Break Even
Long strike − Net debit
Underlying

When to Use a Bear Put Spread

  • You are moderately bearish — expecting a decline but not a crash
  • You want to reduce the cost of a long put
  • Implied volatility is elevated, making naked long puts expensive
  • You want defined risk and don't want to short sell stock

Risks

  • Max profit is capped — you don't benefit from a crash below the short strike
  • You lose the full debit if the stock stays above the long strike
  • Time decay works against you

How a Bear Put Spread Works


Buy a put at strike A and sell a put at strike B (B < A), same expiration. The short put partially offsets the cost of the long put.


Example

AAPL at $195. Buy the $200 put for $6.00, sell the $190 put for $2.80. Net debit: $3.20 ($320).


  • AAPL at $185: Both puts ITM. Profit = ($10 − $3.20) × 100 = $680.
  • AAPL at $196.80: Break-even. The long put is worth $3.20.
  • AAPL at $205: Both expire worthless. Loss = $320.

  • Key Takeaway

    Bear put spreads are the defined-risk way to bet bearish. You sacrifice unlimited downside profit for a much lower cost of entry.

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