Pin Risk Evaluator
How dangerously close price sits to your short strike into expiry — distance in expected-move units and the assignment coin-flip zone.
Formula
Pinning matters because you won't know if you're assigned until after the close — leaving you with unknown weekend stock exposure. Pros flatten or roll anything inside ~1 remaining-sigma; the few ticks of premium left never justify the gap risk.
Not financial advice — for informational and analytical use only. Verify all figures with a qualified professional before acting on them.
Need pin risk evaluator results fast? Analysts, founders, traders and finance professionals use the Pin Risk Evaluator to skip the spreadsheet and get a defensible answer in one step — free, private and instant.
About Pin Risk Evaluator
How dangerously close price sits to your short strike into expiry — distance in expected-move units and the assignment coin-flip zone. Pinning matters because you won't know if you're assigned until after the close — leaving you with unknown weekend stock exposure. Pros flatten or roll anything inside ~1 remaining-sigma; the few ticks of premium left never justify the gap risk. The governing relationship is σ_remaining = S·IV·√(hours/8760); zone = |K−S|/σ. The Pin Risk Evaluator computes entirely in your browser — free, private (your figures never leave your device) and instant, recalculating live as you change any input.
How to use Pin Risk Evaluator
- 1Enter Spot price now, Short strike, Implied volatility (%), Hours to expiry into the Pin Risk Evaluator.
- 2The result is computed automatically using σ_remaining = S·IV·√(hours/8760); zone = |K−S|/σ — there is no button to press.
- 3Change any input to model a different scenario, then copy or share the result.
Why use Pin Risk Evaluator?
- ✓Computes pin risk evaluator instantly with the correct formula — no spreadsheet needed
- ✓100% free and unlimited, with no sign-up, login or paywall
- ✓Runs entirely in your browser, so the figures you enter stay private
- ✓Shows the formula, a live worked example and references so you can defend the number
Frequently asked questions
What is the formula behind the Pin Risk Evaluator?+
Pin Risk Evaluator uses σ_remaining = S·IV·√(hours/8760); zone = |K−S|/σ. Pinning matters because you won't know if you're assigned until after the close — leaving you with unknown weekend stock exposure. The tool substitutes your actual inputs into this relationship and shows the worked example step by step.
What inputs does the Pin Risk Evaluator need?+
Enter Spot price now, Short strike, Implied volatility (%), Hours to expiry and the result updates immediately — there is no button to press. Change any value to model a different scenario in real time.
Is the Pin Risk Evaluator free, and is my data private?+
Yes — it is completely free with no sign-up or usage limit, and it runs entirely in your browser, so the numbers you enter are never uploaded or stored on any server. It is for informational and analytical use, not financial advice.
What should I watch out for when using the Pin Risk Evaluator?+
Pros flatten or roll anything inside ~1 remaining-sigma; the few ticks of premium left never justify the gap risk.
What is the Pin Risk Evaluator based on?+
The method follows authoritative sources: OCC — expiration processing; pin risk practice notes. The formula and references are shown on the page so you can verify and cite the result.
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