Short Put: Profit If the Stock Stays Up
You think the stock will stay above a certain price. A short put lets you get paid for that view. Sell the put, collect the premium, and keep it if the stock cooperates. It is the opposite of the long put and the mirror of the covered call.
- Exactly what you sell and what happens if assigned
- The payoff: income if the stock holds, assignment if it falls
- Your numbers: max profit and max loss
- When a short put is the right income bet, and when you are reaching
A short put is a bullish income trade: sell someone the right to force you to buy a stock, collect the premium, and keep it whether they exercise or not. If the stock stays above your strike, you pocket the full premium. If it falls and you get assigned, you own the stock at a price you should have been okay with. Either way, you made money on the sale.
What You Actually Do
You expect Apple to stay above $190, or at least not fall much below it. So you sell one $190 put and collect $3 a share, $300 for the contract.
You have now written an obligation: if Apple falls below $190 before expiration, the person who bought the put can force you to buy 100 shares at $190. That means you need to be prepared to own the stock at that price, either with cash on hand or margin in your account. But you have already collected $300 for writing that obligation, and you keep it regardless.
The Payoff, Drawn
Drag the slider to see how you do at every ending price for Apple.
The shape tells the whole story. On the right your line is flat: above $190 the stock stays away, the put expires worthless, and you pocket the $300, your max profit. On the left it slopes down: below $190 you are assigned, you buy the stock at $190, and your loss depends on how far it falls. At zero your loss is enormous, but you always keep the $300 premium you collected upfront.
The Two Sides of the Short Put
The short put is a bet in two directions.
If the stock stays up or drifts sideways: The put expires worthless, you keep the full $300, and you can do it again next month. Pure income for being right about the stock not falling. This is the happy path.
If the stock falls: You get assigned, you buy the stock at $190. You are now a shareholder at a price you sold the put at, which means you were willing to own it at that price. The premium you collected, $300, reduces your effective cost. Your loss depends on how much further the stock falls from $190.
The key insight: if you sell a put, you had better be prepared to own the stock. If you are, the premium is just gravy. If you are not, you have no business selling the put.
When a Short Put Fits
- You are bullish or neutral on the stock
- You would be happy to own it at the strike price
- You have capital ready if you get assigned
- You are bearish and expect a drop; wrong view
- You do not want the stock at the strike, no matter what
- The premium is too small to justify the commitment
The short put is a trade for the bullish or neutral trader who has capital and is willing to own the stock if the trade goes against them. It is income, but it is not free income. You are risking real dollars to collect it.
A Worked Example
Walk the same trade through three endings: you sell the $190 Apple put and collect $300.
Apple climbs to $220. The put expires worthless, you keep the $300 premium, and you have lost no sleep. You can sell another put next month and do it again. Pure income for your bullish view being right.
Apple dips to $190. The put is at the strike. You can wait to see if it bounces, or accept assignment at $190. If you get assigned, you own 100 shares for $19,000, and you collected $300, so your effective cost is $18,700. If you wanted the stock at $190, that is fine. You made $300 just for waiting.
Apple crashes to $170. You are assigned at $190, you buy 100 shares for $19,000, and the stock is worth $17,000. You are down $2,000 on the shares, but you keep the $300 premium, for a net loss of $1,700. You now own the stock at the price you sold the put at. You have to make peace with that, because you sold the put knowing this was possible.
That is the short put in three outcomes: pure income if it stays up, an acceptable entry if you get assigned, and a loss if it crashes below your strike.
- A short put is selling one put: income if the stock stays up, possible assignment if it falls.
- Max profit is the premium; max loss is the strike minus zero, reduced by the premium you keep.
- You need to be prepared to own the stock at the strike, or the trade will haunt you if assigned.
- It fits bullish or neutral traders who want income and capital; it does not fit bearish views or those who fear the stock at any price.
Pop Quiz
Two quick checks. Pick an answer and the explanation shows up right away.
You sell the $190 Apple put for $300, and Apple stays at $210. What happens?
At $210 the stock is above the $190 strike, so the put expires worthless. You keep the $300 premium with no assignment.
What is the maximum profit you can make on a short put?
Your profit is capped at the premium you collect. Max profit is $300. That is all you can make if the stock stays above the strike.
Bottom Line
A short put is the income trader's bet: get paid to be bullish or neutral, keep the premium if the stock cooperates, own the stock at a price you liked if it does not. Master the cash-secured put and short put, and you have the foundation for income trading, since they are really the same trade told from different angles. Reach for it when you are bullish, you have capital ready, and you want to get paid while you wait.