How Is Trading Options Different?
Options are rights to buy or sell at a set price before a set date. They differ from every other instrument on this site in two ways: they expire, so time works against a bought position, and their value does not move one-for-one with the underlying price, so the usual leverage arithmetic does not apply.
This is the one page on the site where the arithmetic elsewhere does not carry over. An option is not a leveraged version of the share; it is a different instrument with a clock in it.
How it works
An option is a right, not an obligation, to buy or sell something at a stated price before a stated date. A call is the right to buy; a put is the right to sell.
You pay for that right up front. If you buy the option, that payment is the most you can lose, which is a genuinely different risk shape from every other instrument here.
Selling an option is the mirror image and it is not the mirror image of the risk: the seller receives the payment and takes on the obligation, and the loss is not capped in the same way.
One: the clock runs against you
Part of an option’s price is the value of the time remaining. As the expiry approaches, that part shrinks, and at expiry it is gone.
So a bought option loses value while nothing happens. Hold a share through a flat month and you have lost the spread; hold a bought option through a flat month and you have lost part of what you paid.
Which inverts one of this site’s standing conclusions. Everywhere else, waiting is free and the what nobody tells beginners page argues that doing nothing is the job. Here, doing nothing has a price.
Two: it does not move one-for-one
An option’s price moves by a fraction of the underlying’s move, and that fraction itself changes as price moves, as time passes, and as the market’s expectation of future movement changes.
Which is why the leverage page’s arithmetic does not transfer. That page’s table — one typical bar costing a fixed percentage of the account at a fixed multiple — assumes a constant multiple. Options do not have one.
Practical consequence: you cannot size an options position with the rule used elsewhere on this site. The nearest safe equivalent is the amount paid, because for a bought option that is the whole risk.
Three: the strike is a technical decision
Choosing a strike is choosing a price the market has to reach. That is a level, and everything on this site about levels applies to picking it.
A strike beyond the next resistance needs the level to break — which is a second thing that has to happen, and the take profit page’s measurement is the relevant one: a more distant target is reached far less often.
A strike inside the recent range costs more and needs less. That trade-off is the same one the target table describes, priced explicitly by the market instead of implied.
What the market is charging you
An option’s price contains one number that has no equivalent anywhere else on this site: the market’s expectation of how much the underlying will move before expiry.
Buy an option and you are buying that expectation as well as the direction. If the market expects a great deal of movement, the option is expensive, and the move has to be larger than expected for the position to pay.
Which produces the outcome that surprises people most: the news arrives, the share moves exactly as predicted, and the option loses money — because the expectation was already priced in and then fell away once the event passed.
The practical rule is short. Before buying, ask what the price implies the market is expecting, and whether your view is bigger than that. If your view is “it will go up”, and the market already expects a large move, you do not have a trade — you have the same opinion as everyone else, at their price.
A worked example
Decide the move first, on the underlying’s chart. Direction, level, and by when.
“By when” is the part you can skip everywhere else and cannot skip here.
Then choose the expiry with room beyond your timeframe, because an option that expires the day after your thesis was due to work has priced in almost none of it.
And treat the amount paid as the risk. For a bought option, that is the honest number, and it is the only sizing rule on this page that transfers cleanly.
The original data
Across our study of 24,971 trading videos, 1,061 have option or options in the title. The median one gets 9,476 views, 71% never pass 50,000, and the median length is 12.7 minutes.
The corpus carries description text for 87 of those 1,061, and across those 87, 14 mention invalidation, failure, or what a bad read looks like.
16%, which is the highest rate of any market page in this glossary — above forex at 8% and stocks at 6%, and a little below stop hunts at 19%. An instrument where you can be right and still lose attracts writing that says so.
When it fails
You were right and it still expired worthless
This is the failure that belongs to options alone. The direction was correct, the move arrived after the date, and the position had already ended.
The sold option had a different risk shape
Buying caps the loss at the amount paid. Selling does not. Those are two different businesses, and the second one needs the risk management page rather than a chart.
Quiet cost you money
A range is expensive for a bought option in a way it is not for a share, because the clock keeps running through it.
The spread was wider than the edge
Option spreads are typically wider than the underlying’s, and they widen further on less-traded strikes and expiries. Check it before assuming a plan is tradeable.
The timing was almost right
Almost right is a loss here, which is not true anywhere else on this site and is the single most important sentence on this page.
You judged it from the finished chart
The question: Two days to expiry, slightly wrong. Close, or hold?
With two days left, holding and closing are both defensible and only one of them will look sensible afterwards — which is why the exit rule has to exist before the position does.
Related
Leverage is the arithmetic this instrument breaks, and why it is worth knowing that it breaks.
Take profit has the measurement behind choosing a strike: a more distant target is reached much less often.
And risk management matters more here, because the shape of the loss depends on which side of the contract you took.
I trade the underlying rather than the option, and I offer that as a limitation rather than a recommendation. An options position usually has at least two things happening to it at once, and if you cannot tell afterwards which of them made or lost the money, you cannot improve. Know which variable you are actually betting on before you put it on.
— Michael Whitman
This page is educational, not financial advice. Test every idea on your own charts before risking money.