A roll is a new trade. Read the calendar again.

It is Monday. A few weeks ago you sold a put on a company you would be glad to own. You chose an expiration that ended well before the company's next earnings report, because a report inside the life of a sold put is a risk you decided not to take.

Then the stock fell through your strike. Your put expires this Friday, the third Friday of the month. The company reports on the Wednesday of the week after next.

So you decide to roll. If the new put pays more than the old one costs to buy back, you collect the difference, called the credit. It is cash on the day, not a profit. The old put now costs more to buy back than you were paid for it, so closing it locks in a loss. You open the option chain, the table of strikes and expirations your broker lists, and you go straight to the credits.

That is where the mistake usually happens.

Does your roll cross an earnings report?

The put you are about to sell is not a continuation of the old one. It is a new trade with its own expiration, and between today and that date there may be an earnings report the old put never had to face.

When you opened the trade, you asked one question: is there a report before this option expires? On the roll day, that question has to be asked again, about the new date. And it has to be asked before you look at the credit, because once you have seen the numbers, you are no longer reading the calendar. You are looking for a reason to take the biggest one.

Why "roll it out a month" is the trap

Here is what the chain might offer you on that Monday. The numbers are an illustration, not a real security: your put has a 50 strike and the stock is at 47.

The monthly, the standard expiration on the third Friday of next month, pays almost three times as much. You could even roll to the next strike down, closer to where the stock is now, and still take a credit. Every number on the screen tells you to choose it, and it is the common advice: when in trouble, roll further out.

It also carries the position across the report, and so does the Friday after. Some of the monthly's extra credit is simply time: it stays open three or four weeks longer than next Friday's put. Some of it is the report. A put that stays open through a report usually pays extra for it, because a report can move the stock a long way. A stock can move eight percent on a report, enough to go straight through a strike that looked comfortably far away, in a single session. So the bigger credit is not a better deal. Part of it is what the market pays you to carry the report.

Only the first roll, to next Friday, ends before the report. That is what clearing the report means. Next Friday is a weekly expiration, one of the short-dated options listed between the standard monthly dates. It pays less. It is also the only one that keeps the promise you made when you opened the trade: no report inside the life of the put.

What the clearing roll costs

The roll that clears the report buys you a week, not a month. Next Friday you are back at the same question, with the report five days away, and this time the calendar may have nothing left to offer. On most stocks, nothing expires between that Friday and the report. A few heavily traded companies now also list options that expire on Mondays, so check your chain, but do not count on a second clearing roll.

If the stock is back above your strike by then, the put may simply expire. If it is not, you are past the easy answers. Without a second clearing roll, any further roll carries the position across the report. If the put is assigned instead, you buy the shares, and you carry them through the report only if you still own them when the company reports. Either way, the choice is the same: get out before the report, at whatever it costs then, or carry the risk through it on purpose.

The same choice can come on the roll day itself, when the expirations that clear the report pay little or nothing once the old put is bought back. The point is to make that decision with the report in view, and not to drift into it because nobody looked at the calendar.

On a new trade, the same question has a plainer answer. If no expiration clears the report, there is no trade.

We skipped this check twice ourselves

This is not a hypothetical for us. On two of our own positions, the opening trades were clear of earnings, exactly as our rules require. Both times, the next move carried the position into a report: once a roll of a losing put, once a new put sold the day after a winning one was closed.

On both days the same question was open: which expirations end before the report, and what do they pay? Nobody asked it. On one of the two, the answer would have been a smaller credit and a clear calendar. On the other, the answer was not to sell at all.

The check, in four lines

1. Before you look at any credit, find the company's next report date.
2. Check it in two places: your broker's earnings calendar, then the company's own investor relations page. Report dates move, and third-party calendars can be wrong. If your broker marks the date unconfirmed, check it again on the day you roll.
3. List the expirations that end before that date. Only those are candidates for the roll.
4. If the list is empty, or nothing on it pays more than pennies, do not roll by default. You are making a different decision now, and you make it on purpose.

When you open a trade, you choose the dates. On the day you roll it, you are choosing them again. A roll is a new trade. Read the calendar again.