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Dojo › Learn › The Move calculator: what your option is worth if the market moves

The Move calculator: what your option is worth if the market moves

See six 0DTE contracts on SPY, SPX or QQQ and what each would be worth after a move up or down, or after time passes with no move at all.

The Move calculator with six 0DTE contracts and move scenarios

Screenshot from the Dojo demo, with demo data.

What it shows

Six contracts for today's expiry: a call and a put in the money, at the money and out of the money. For each one you see its price now, then what it would be worth if SPY moves down or up one or two dollars (five or ten points for SPX), and what it is worth if nothing happens. Every scenario is shown per contract in dollars and percent.

Time decay included

Switch the view to 15, 30 or 60 minutes from now and every number updates for the time that has passed. The No move column then shows exactly what waiting costs. On same day contracts this is often the most eye opening column on the page, especially after lunch.

How to use it before a trade

Decide the move you expect, then read across the rows to see which strike pays the most for that move and how much each one loses if you are wrong by the same amount. Check that your take profit is reachable with a realistic move and that your stop sits where a normal pullback would not trigger it.

Reading the numbers honestly

The values are estimates for planning and review. They use live quotes when your broker is connected and refresh every five minutes during the session. Prices are the middle of the bid and ask, so real exits usually come in a little lower, and around big releases prices can jump further than any estimate.

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