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Rolling a cash-secured put down and out: the credit test, and what it can't fix
Rolling a put down and out means closing your put and selling one with a lower strike and a later date. The credit test is simple: the new put must pay more than the old one costs to close. Even a roll that passes can still end in a loss, as the example shows.
The short answer
When the stock falls below your put's strike, you can roll down and out: buy back the put, and sell a new one with a lower strike ("down") and a later expiry ("out").
Before you do, run the credit test: does the new put pay more than it costs to close the old one? If yes, it's a net credit: you lower your buy price and collect a little more. If no, it's a net debit: you're paying to move the strike, and that payment is a loss taken today.
Even a credit roll doesn't undo the drop. It gives the stock more time to recover. If the stock keeps falling, you still buy the shares, just later and a little lower.
Why "down" and "out" pull against each other
The lower the new strike, the less the new put pays. The later the date, the more it pays. So:
- Down costs you premium.
- Out buys you premium.
To roll for a credit, you usually have to go out further in time for every step you go down. Sometimes no reasonable date pays enough. That's the credit test telling you no.
The worked example (an illustration, not a trade idea)
A made-up stock, XYZ, traded at $80. You sold a 30-day $75 put for $2.00 and collected $200. Your broker holds $7,500.
XYZ falls to $68 with 5 days left. Your $75 put now costs $7.20 to buy back. Here's what a few rolls look like on the chain:
| Roll to | Premium for the new put | Cost to close the old put | Net | Credit test |
|---|---|---|---|---|
| $75 put, 35 days later (out only) | $8.60 | $7.20 | +$1.40 | Passes, no lower strike |
| $72 put, 63 days later | $7.40 | $7.20 | +$0.20 | Passes, barely |
| $70 put, 35 days later | $4.50 | $7.20 | −$2.70 | Fails: a debit |
Going down to $70 in a month costs $270. Going down to $72 for a credit takes two more months. That is the usual shape.
You choose the $72 put, 63 days out, for a $0.20 credit. Your total premium kept is now $2.00 − $7.20 + $7.40 = $2.20. If assigned, your cost would be $72 − $2.20 = $69.80.
Then the stock keeps falling
Over the next two months, XYZ slides to $60. You're assigned at $72.
| Line | Amount |
|---|---|
| Buy 100 shares at $72 | −$7,200 |
| Shares are worth ($60 × 100) | $6,000 |
| Loss on the shares | −$1,200 |
| Total premium kept | +$220 |
| Total | −$980 |
The roll passed the credit test. It lowered your buy price by $3. You still lost $980, and you spent two extra months tied to a falling stock.
Every choice, both endings
Here are the four choices you had on that day, with XYZ at $68. Two endings: XYZ keeps falling to $60, or recovers to $76.
| Choice | Your cost if assigned | XYZ ends at $60 | XYZ ends at $76 |
|---|---|---|---|
| Close the put now at $7.20 | — | −$520 (done) | −$520 (done) |
| Take assignment at $75 and hold | $73.00 | −$1,300 | +$300 |
| Debit roll to $70, 35 days | $70.70 | −$1,070 | −$70 (put expires) |
| Credit roll to $72, 63 days | $69.80 | −$980 | +$220 (put expires) |
What the table shows:
- Closing caps the loss at $520, whatever happens next.
- The credit roll loses less than taking assignment if XYZ keeps falling, and keeps a gain if it recovers.
- The debit roll is the weakest of the rolls here: it pays to lower the strike, and that payment sticks even on a recovery.
- Nothing on the list turns the drop into a win if the stock keeps sliding. The roll only changes how much and how late.
The two-question test
Before rolling a put down and out, ask:
- Is it a net credit? If not, write the debit down as a loss you're taking today. See rolling for a credit for why debits are usually a loss in disguise.
- Would I sell this new put fresh today? Same strike, same date, same stock, same size, if I had no position at all. If the answer is no, the roll is a way to avoid admitting the trade is over.
Also check that no earnings date falls inside the new expiry. A later date makes that more likely.
If the answer to either question is no, the cleaner choices are closing, or taking the shares on purpose and moving to the call side of the wheel strategy. Our decision page, roll or take assignment, lays out the full flow.
The limit on rolling. One credit roll on a stock you still want is a reasonable tool. Rolling again and again, each time a bit lower and a lot later, often ends with the same loss, months later. That pattern has its own page: the rolling trap.
In plain words: "down" costs you premium and "out" buys it back. If the math won't pay for both, the roll is telling you something.
Questions
What does rolling a put down and out mean?
You buy back your current put and sell a new one with a lower strike and a later expiry, usually in one order. It lowers the price you'd buy at, in exchange for more time in the trade.
Should I roll a put for a debit?
Usually not. A debit roll means paying today to move the strike, which is a realized cost. Count it as a loss and compare it honestly with closing or taking assignment.
Does rolling a put avoid the loss?
No. It can lower your buy price and give the stock time, but if the stock keeps falling you'll still buy shares worth less than you paid.
How far out should I roll?
Only as far as needed to get a net credit, and not past an earnings date unless you mean to. If you need many months to get a credit, closing may be the better choice.
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