The scenario I actually care about
This is not a textbook exercise. It is a before-market-open planning problem. You own the contract, the stock pops or drops in premarket trading, and you want guidance for where to stage a limit sell or limit buy before the option chain becomes active again.
OptionsPeek is useful here because it turns that stock move into a scenario estimate before the market opens. The estimate will not be exact, and it should never be treated as pricing truth, but it can be close enough to anchor a realistic order plan instead of guessing in the dark.
The workflow
Start with the contract you already hold: ticker, type, strike, expiration, and whichever Greeks or current option price you have available. Then update the stock move to match the premarket gap you are seeing.
What matters is not whether the estimate is perfect to the penny. What matters is whether it frames a believable opening range for the contract, and whether that range helps you choose a limit order that is disciplined instead of emotional.
Why this works in practice
A premarket stock gap usually gives you more signal than the option chain does, because the option has not started trading normally yet. Delta, IV assumptions, and the current option price are enough to create a useful first estimate even before the chain settles into its opening spread.
That makes OptionsPeek valuable as a planning tool. It is not trying to replace the market. It is giving you a structured way to think about the opening before the market prints.
What to screenshot later
The strongest image for this post would be a real chart export from the stock price chart with the selected price, target price, estimated option value, and date stamp visible. A second useful image would be a clean calculator state that shows the premarket stock move and the resulting estimate summary.
Those images should live as local blog assets and carry the OptionsPeek watermark so every screenshot still looks like part of the same product system.