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Short Put Break-Even Calculator
Calculate the expiration break-even, then keep it in context: break-even is not a downside floor.
Expiration break-even: $97.00 per share
Total premium received: $300
Gross assignment purchase obligation: $10,000
Break-even is not a maximum-loss or safety threshold. The stock can trade far below it.
What the number means
For a short put held through expiration, strike minus premium per share gives the basic economic break-even before transaction costs and taxes. If the stock falls materially below that level, losses continue to increase.