{"id":561,"date":"2026-08-11T06:23:38","date_gmt":"2026-08-11T06:23:38","guid":{"rendered":"https:\/\/www.stockmaster.in\/universe\/?p=561"},"modified":"2026-08-11T06:23:38","modified_gmt":"2026-08-11T06:23:38","slug":"option-probability-calculator","status":"publish","type":"post","link":"https:\/\/www.stockmaster.in\/universe\/option-probability-calculator\/","title":{"rendered":"Option Probability Calculator"},"content":{"rendered":"<div class=\"smopc-tool\">\r\n\r\n  <div class=\"smopc-header\">\r\n\r\n    <div class=\"smopc-badge\">\r\n      STOCKMASTER UNIVERSE\r\n    <\/div>\r\n\r\n    <h2>Option Probability Calculator<\/h2>\r\n\r\n    <p>\r\n      Estimate theoretical option probabilities, expected price range\r\n      and the likelihood of an underlying finishing above, below or\r\n      between selected price levels at expiry.\r\n    <\/p>\r\n\r\n  <\/div>\r\n\r\n\r\n  <div class=\"smopc-body\">\r\n\r\n    <!-- INPUTS -->\r\n\r\n    <div class=\"smopc-section-title\">\r\n      <span>1<\/span>\r\n      Market &amp; Option Settings\r\n    <\/div>\r\n\r\n\r\n    <div class=\"smopc-grid\">\r\n\r\n      <div class=\"smopc-field\">\r\n\r\n        <label>Current Underlying Price (\u20b9)<\/label>\r\n\r\n        <input\r\n          type=\"number\"\r\n          class=\"smopc-spot\"\r\n          value=\"25000\"\r\n          min=\"0\"\r\n          step=\"0.01\">\r\n\r\n      <\/div>\r\n\r\n\r\n      <div class=\"smopc-field\">\r\n\r\n        <label>Strike Price (\u20b9)<\/label>\r\n\r\n        <input\r\n          type=\"number\"\r\n          class=\"smopc-strike\"\r\n          value=\"25000\"\r\n          min=\"0\"\r\n          step=\"0.01\">\r\n\r\n      <\/div>\r\n\r\n\r\n      <div class=\"smopc-field\">\r\n\r\n        <label>Days to Expiry<\/label>\r\n\r\n        <input\r\n          type=\"number\"\r\n          class=\"smopc-days\"\r\n          value=\"30\"\r\n          min=\"1\"\r\n          step=\"1\">\r\n\r\n      <\/div>\r\n\r\n\r\n      <div class=\"smopc-field\">\r\n\r\n        <label>Implied Volatility (%)<\/label>\r\n\r\n        <input\r\n          type=\"number\"\r\n          class=\"smopc-iv\"\r\n          value=\"20\"\r\n          min=\"0.1\"\r\n          step=\"0.1\">\r\n\r\n      <\/div>\r\n\r\n\r\n      <div class=\"smopc-field\">\r\n\r\n        <label>Option Type<\/label>\r\n\r\n        <select class=\"smopc-type\">\r\n\r\n          <option value=\"call\">\r\n            Call\r\n          <\/option>\r\n\r\n          <option value=\"put\">\r\n            Put\r\n          <\/option>\r\n\r\n        <\/select>\r\n\r\n      <\/div>\r\n\r\n\r\n      <div class=\"smopc-field\">\r\n\r\n        <label>Risk-Free Rate (%)<\/label>\r\n\r\n        <input\r\n          type=\"number\"\r\n          class=\"smopc-rate\"\r\n          value=\"6\"\r\n          step=\"0.1\">\r\n\r\n      <\/div>\r\n\r\n\r\n      <div class=\"smopc-field\">\r\n\r\n        <label>Lower Target Price (\u20b9)<\/label>\r\n\r\n        <input\r\n          type=\"number\"\r\n          class=\"smopc-lower\"\r\n          value=\"24000\"\r\n          min=\"0\"\r\n          step=\"0.01\">\r\n\r\n      <\/div>\r\n\r\n\r\n      <div class=\"smopc-field\">\r\n\r\n        <label>Upper Target Price (\u20b9)<\/label>\r\n\r\n        <input\r\n          type=\"number\"\r\n          class=\"smopc-upper\"\r\n          value=\"26000\"\r\n          min=\"0\"\r\n          step=\"0.01\">\r\n\r\n      <\/div>\r\n\r\n    <\/div>\r\n\r\n\r\n    <div class=\"smopc-info\">\r\n\r\n      <strong>What is being calculated?<\/strong>\r\n\r\n      The calculator estimates theoretical expiry probabilities using\r\n      the underlying price, strike price, time to expiry, implied\r\n      volatility and risk-free rate. The results are model-based\r\n      estimates and are not guaranteed market outcomes.\r\n\r\n    <\/div>\r\n\r\n\r\n    <button\r\n      type=\"button\"\r\n      class=\"smopc-calculate\">\r\n\r\n      Calculate Probability\r\n\r\n    <\/button>\r\n\r\n\r\n    <div class=\"smopc-error\"><\/div>\r\n\r\n\r\n    <!-- RESULTS -->\r\n\r\n    <div class=\"smopc-results\">\r\n\r\n\r\n      <div class=\"smopc-section-title smopc-space\">\r\n\r\n        <span>2<\/span>\r\n        Probability Analysis\r\n\r\n      <\/div>\r\n\r\n\r\n      <div class=\"smopc-result-grid\">\r\n\r\n\r\n        <div class=\"smopc-card smopc-primary\">\r\n\r\n          <small>Probability ITM<\/small>\r\n\r\n          <strong class=\"smopc-itm\">\r\n            0%\r\n          <\/strong>\r\n\r\n        <\/div>\r\n\r\n\r\n        <div class=\"smopc-card\">\r\n\r\n          <small>Probability OTM<\/small>\r\n\r\n          <strong class=\"smopc-otm\">\r\n            0%\r\n          <\/strong>\r\n\r\n        <\/div>\r\n\r\n\r\n        <div class=\"smopc-card\">\r\n\r\n          <small>Probability Above Strike<\/small>\r\n\r\n          <strong class=\"smopc-above\">\r\n            0%\r\n          <\/strong>\r\n\r\n        <\/div>\r\n\r\n\r\n        <div class=\"smopc-card\">\r\n\r\n          <small>Probability Below Strike<\/small>\r\n\r\n          <strong class=\"smopc-below\">\r\n            0%\r\n          <\/strong>\r\n\r\n        <\/div>\r\n\r\n\r\n        <div class=\"smopc-card\">\r\n\r\n          <small>Probability Above Upper Target<\/small>\r\n\r\n          <strong class=\"smopc-above-upper\">\r\n            0%\r\n          <\/strong>\r\n\r\n        <\/div>\r\n\r\n\r\n        <div class=\"smopc-card\">\r\n\r\n          <small>Probability Below Lower Target<\/small>\r\n\r\n          <strong class=\"smopc-below-lower\">\r\n            0%\r\n          <\/strong>\r\n\r\n        <\/div>\r\n\r\n\r\n        <div class=\"smopc-card smopc-primary\">\r\n\r\n          <small>Probability Inside Range<\/small>\r\n\r\n          <strong class=\"smopc-inside\">\r\n            0%\r\n          <\/strong>\r\n\r\n        <\/div>\r\n\r\n\r\n        <div class=\"smopc-card\">\r\n\r\n          <small>Expected Move<\/small>\r\n\r\n          <strong class=\"smopc-expected-move\">\r\n            \u20b90\r\n          <\/strong>\r\n\r\n        <\/div>\r\n\r\n      <\/div>\r\n\r\n\r\n      <!-- EXPECTED RANGE -->\r\n\r\n      <div class=\"smopc-panel\">\r\n\r\n        <h3>Theoretical Expected Price Range<\/h3>\r\n\r\n\r\n        <div class=\"smopc-range-box\">\r\n\r\n          <div>\r\n\r\n            <span>Lower Range<\/span>\r\n\r\n            <strong class=\"smopc-range-low\">\r\n              \u20b90\r\n            <\/strong>\r\n\r\n          <\/div>\r\n\r\n\r\n          <div class=\"smopc-range-middle\">\r\n\r\n            <span>Current Price<\/span>\r\n\r\n            <strong class=\"smopc-range-current\">\r\n              \u20b90\r\n            <\/strong>\r\n\r\n          <\/div>\r\n\r\n\r\n          <div>\r\n\r\n            <span>Upper Range<\/span>\r\n\r\n            <strong class=\"smopc-range-high\">\r\n              \u20b90\r\n            <\/strong>\r\n\r\n          <\/div>\r\n\r\n        <\/div>\r\n\r\n\r\n        <p class=\"smopc-range-text\"><\/p>\r\n\r\n      <\/div>\r\n\r\n\r\n      <!-- PROBABILITY METER -->\r\n\r\n      <div class=\"smopc-panel\">\r\n\r\n        <h3>Probability Distribution<\/h3>\r\n\r\n\r\n        <div class=\"smopc-meter-row\">\r\n\r\n          <span>Below Lower Target<\/span>\r\n\r\n          <div class=\"smopc-bar\">\r\n\r\n            <div class=\"smopc-bar-below\">\r\n              <span>0%<\/span>\r\n            <\/div>\r\n\r\n          <\/div>\r\n\r\n        <\/div>\r\n\r\n\r\n        <div class=\"smopc-meter-row\">\r\n\r\n          <span>Inside Target Range<\/span>\r\n\r\n          <div class=\"smopc-bar\">\r\n\r\n            <div class=\"smopc-bar-inside\">\r\n              <span>0%<\/span>\r\n            <\/div>\r\n\r\n          <\/div>\r\n\r\n        <\/div>\r\n\r\n\r\n        <div class=\"smopc-meter-row\">\r\n\r\n          <span>Above Upper Target<\/span>\r\n\r\n          <div class=\"smopc-bar\">\r\n\r\n            <div class=\"smopc-bar-above\">\r\n              <span>0%<\/span>\r\n            <\/div>\r\n\r\n          <\/div>\r\n\r\n        <\/div>\r\n\r\n      <\/div>\r\n\r\n\r\n      <!-- STRIKE PROBABILITY -->\r\n\r\n      <div class=\"smopc-panel\">\r\n\r\n        <h3>Strike Probability<\/h3>\r\n\r\n\r\n        <div class=\"smopc-strike-visual\">\r\n\r\n          <div class=\"smopc-strike-line\">\r\n\r\n            <div class=\"smopc-strike-marker\">\r\n\r\n              <span>Strike<\/span>\r\n\r\n              <strong class=\"smopc-strike-value\">\r\n                \u20b90\r\n              <\/strong>\r\n\r\n            <\/div>\r\n\r\n          <\/div>\r\n\r\n\r\n          <div class=\"smopc-strike-labels\">\r\n\r\n            <span>Lower Prices<\/span>\r\n\r\n            <span>Higher Prices<\/span>\r\n\r\n          <\/div>\r\n\r\n        <\/div>\r\n\r\n      <\/div>\r\n\r\n\r\n      <!-- SCENARIO -->\r\n\r\n      <div class=\"smopc-panel\">\r\n\r\n        <h3>Probability Scenarios<\/h3>\r\n\r\n\r\n        <div class=\"smopc-scenario-grid\">\r\n\r\n\r\n          <div>\r\n\r\n            <span>Finish Above Lower Target<\/span>\r\n\r\n            <strong class=\"smopc-above-lower\">\r\n              0%\r\n            <\/strong>\r\n\r\n          <\/div>\r\n\r\n\r\n          <div>\r\n\r\n            <span>Finish Below Upper Target<\/span>\r\n\r\n            <strong class=\"smopc-below-upper\">\r\n              0%\r\n            <\/strong>\r\n\r\n          <\/div>\r\n\r\n\r\n          <div>\r\n\r\n            <span>Finish Between Targets<\/span>\r\n\r\n            <strong class=\"smopc-between\">\r\n              0%\r\n            <\/strong>\r\n\r\n          <\/div>\r\n\r\n\r\n          <div>\r\n\r\n            <span>Option Strike<\/span>\r\n\r\n            <strong class=\"smopc-scenario-strike\">\r\n              \u20b90\r\n            <\/strong>\r\n\r\n          <\/div>\r\n\r\n        <\/div>\r\n\r\n      <\/div>\r\n\r\n\r\n      <!-- INTERPRETATION -->\r\n\r\n      <div class=\"smopc-interpretation\">\r\n\r\n        <h3>What the Probability Means<\/h3>\r\n\r\n        <p class=\"smopc-interpretation-text\"><\/p>\r\n\r\n      <\/div>\r\n\r\n\r\n      <!-- DISCLAIMER -->\r\n\r\n      <div class=\"smopc-disclaimer\">\r\n\r\n        <strong>Risk Disclaimer:<\/strong>\r\n\r\n        This calculator provides theoretical probability estimates\r\n        based on a simplified option-pricing model. Actual market\r\n        outcomes can differ because of implied volatility changes,\r\n        price gaps, liquidity, dividends, interest rates, market\r\n        conditions and other factors. Probability does not represent\r\n        a guarantee of profit or loss and should not be considered\r\n        investment advice.\r\n\r\n      <\/div>\r\n\r\n    <\/div>\r\n\r\n  <\/div>\r\n\r\n\r\n  <div class=\"smopc-footer\">\r\n\r\n    StockMaster Universe \u2022 F&amp;O Trading Tools\r\n\r\n  <\/div>\r\n\r\n<\/div>\r\n\r\n\r\n<style>\r\n\r\n.smopc-tool {\r\n  max-width: 1050px;\r\n  margin: 30px auto;\r\n  background: #ffffff;\r\n  border: 1px solid #e5e7eb;\r\n  border-radius: 18px;\r\n  overflow: hidden;\r\n  box-shadow: 0 8px 28px rgba(0,0,0,.07);\r\n  font-family: Arial, Helvetica, sans-serif;\r\n  color: #1f2937;\r\n}\r\n\r\n.smopc-tool *,\r\n.smopc-tool *:before,\r\n.smopc-tool *:after {\r\n  box-sizing: border-box;\r\n}\r\n\r\n\r\n.smopc-header {\r\n  background: #5b21b6;\r\n  color: #ffffff;\r\n  text-align: center;\r\n  padding: 30px 24px;\r\n}\r\n\r\n\r\n.smopc-badge {\r\n  display: inline-block;\r\n  padding: 5px 10px;\r\n  border: 1px solid rgba(255,255,255,.35);\r\n  border-radius: 30px;\r\n  color: #f3e8ff;\r\n  font-size: 10px;\r\n  letter-spacing: 1px;\r\n  margin-bottom: 10px;\r\n}\r\n\r\n\r\n.smopc-header h2 {\r\n  margin: 0 0 8px;\r\n  color: #ffffff;\r\n  font-size: 28px;\r\n  line-height: 1.3;\r\n}\r\n\r\n\r\n.smopc-header p {\r\n  max-width: 780px;\r\n  margin: auto;\r\n  color: #ede9fe;\r\n  font-size: 15px;\r\n  line-height: 1.6;\r\n}\r\n\r\n\r\n.smopc-body {\r\n  padding: 26px;\r\n}\r\n\r\n\r\n.smopc-section-title {\r\n  display: flex;\r\n  align-items: center;\r\n  gap: 9px;\r\n  margin-bottom: 18px;\r\n  color: #111827;\r\n  font-size: 18px;\r\n  font-weight: 700;\r\n}\r\n\r\n\r\n.smopc-section-title span {\r\n  width: 27px;\r\n  height: 27px;\r\n  display: inline-flex;\r\n  align-items: center;\r\n  justify-content: center;\r\n  border-radius: 50%;\r\n  background: #5b21b6;\r\n  color: #ffffff;\r\n  font-size: 13px;\r\n}\r\n\r\n\r\n.smopc-space {\r\n  margin-top: 28px;\r\n}\r\n\r\n\r\n.smopc-grid {\r\n  display: grid;\r\n  grid-template-columns: repeat(4,1fr);\r\n  gap: 15px;\r\n}\r\n\r\n\r\n.smopc-field label {\r\n  display: block;\r\n  margin-bottom: 7px;\r\n  color: #374151;\r\n  font-size: 13px;\r\n  font-weight: 700;\r\n}\r\n\r\n\r\n.smopc-field input,\r\n.smopc-field select {\r\n  width: 100%;\r\n  padding: 12px 13px;\r\n  border: 1px solid #d1d5db;\r\n  border-radius: 9px;\r\n  background: #ffffff;\r\n  color: #111827;\r\n  font-size: 14px;\r\n  outline: none;\r\n}\r\n\r\n\r\n.smopc-field input:focus,\r\n.smopc-field select:focus {\r\n  border-color: #7c3aed;\r\n  box-shadow: 0 0 0 3px rgba(124,58,237,.10);\r\n}\r\n\r\n\r\n.smopc-info {\r\n  margin-top: 18px;\r\n  padding: 14px 16px;\r\n  border: 1px solid #ddd6fe;\r\n  border-radius: 10px;\r\n  background: #f5f3ff;\r\n  color: #4c1d95;\r\n  font-size: 12px;\r\n  line-height: 1.6;\r\n}\r\n\r\n\r\n.smopc-calculate {\r\n  width: 100%;\r\n  margin-top: 20px;\r\n  padding: 15px;\r\n  border: 0;\r\n  border-radius: 10px;\r\n  background: #5b21b6;\r\n  color: #ffffff;\r\n  font-size: 16px;\r\n  font-weight: 700;\r\n  cursor: pointer;\r\n}\r\n\r\n\r\n.smopc-calculate:hover {\r\n  background: #4c1d95;\r\n}\r\n\r\n\r\n.smopc-error {\r\n  display: none;\r\n  margin-top: 14px;\r\n  padding: 12px;\r\n  border: 1px solid #fecaca;\r\n  border-radius: 8px;\r\n  background: #fef2f2;\r\n  color: #991b1b;\r\n  font-size: 13px;\r\n}\r\n\r\n\r\n.smopc-results {\r\n  display: none;\r\n  margin-top: 30px;\r\n}\r\n\r\n\r\n.smopc-result-grid {\r\n  display: grid;\r\n  grid-template-columns: repeat(4,1fr);\r\n  gap: 12px;\r\n}\r\n\r\n\r\n.smopc-card {\r\n  padding: 17px 10px;\r\n  border: 1px solid #e5e7eb;\r\n  border-radius: 11px;\r\n  background: #fafafa;\r\n  text-align: center;\r\n}\r\n\r\n\r\n.smopc-card small {\r\n  display: block;\r\n  margin-bottom: 7px;\r\n  color: #6b7280;\r\n  font-size: 11px;\r\n  font-weight: 600;\r\n}\r\n\r\n\r\n.smopc-card strong {\r\n  display: block;\r\n  color: #4c1d95;\r\n  font-size: 17px;\r\n}\r\n\r\n\r\n.smopc-primary {\r\n  background: #f5f3ff;\r\n  border-color: #ddd6fe;\r\n}\r\n\r\n\r\n.smopc-panel {\r\n  margin-top: 22px;\r\n  padding: 20px;\r\n  border: 1px solid #e5e7eb;\r\n  border-radius: 12px;\r\n}\r\n\r\n\r\n.smopc-panel h3,\r\n.smopc-interpretation h3 {\r\n  margin: 0 0 15px;\r\n  color: #111827;\r\n  font-size: 17px;\r\n}\r\n\r\n\r\n.smopc-range-box {\r\n  display: grid;\r\n  grid-template-columns: 1fr 1fr 1fr;\r\n  gap: 12px;\r\n  text-align: center;\r\n}\r\n\r\n\r\n.smopc-range-box div {\r\n  padding: 17px;\r\n  border-radius: 10px;\r\n  background: #f9fafb;\r\n}\r\n\r\n\r\n.smopc-range-box span {\r\n  display: block;\r\n  margin-bottom: 6px;\r\n  color: #6b7280;\r\n  font-size: 11px;\r\n}\r\n\r\n\r\n.smopc-range-box strong {\r\n  color: #4c1d95;\r\n  font-size: 18px;\r\n}\r\n\r\n\r\n.smopc-range-middle {\r\n  background: #f5f3ff !important;\r\n  border: 1px solid #ddd6fe;\r\n}\r\n\r\n\r\n.smopc-range-text {\r\n  margin: 15px 0 0;\r\n  color: #4b5563;\r\n  font-size: 13px;\r\n  line-height: 1.6;\r\n}\r\n\r\n\r\n.smopc-meter-row {\r\n  margin-bottom: 16px;\r\n}\r\n\r\n\r\n.smopc-meter-row > span {\r\n  display: block;\r\n  margin-bottom: 7px;\r\n  color: #4b5563;\r\n  font-size: 12px;\r\n  font-weight: 600;\r\n}\r\n\r\n\r\n.smopc-bar {\r\n  width: 100%;\r\n  height: 28px;\r\n  overflow: hidden;\r\n  border-radius: 20px;\r\n  background: #f3f4f6;\r\n}\r\n\r\n\r\n.smopc-bar div {\r\n  width: 0%;\r\n  height: 100%;\r\n  display: flex;\r\n  align-items: center;\r\n  justify-content: center;\r\n  border-radius: 20px;\r\n  background: #5b21b6;\r\n  color: #ffffff;\r\n  font-size: 11px;\r\n  font-weight: 700;\r\n  transition: width .5s ease;\r\n}\r\n\r\n\r\n.smopc-strike-visual {\r\n  padding: 25px 5px 5px;\r\n}\r\n\r\n\r\n.smopc-strike-line {\r\n  position: relative;\r\n  height: 8px;\r\n  border-radius: 10px;\r\n  background: #e5e7eb;\r\n}\r\n\r\n\r\n.smopc-strike-marker {\r\n  position: absolute;\r\n  top: 50%;\r\n  left: 50%;\r\n  transform: translate(-50%,-50%);\r\n  width: 16px;\r\n  height: 16px;\r\n  border-radius: 50%;\r\n  background: #5b21b6;\r\n}\r\n\r\n\r\n.smopc-strike-marker span {\r\n  position: absolute;\r\n  top: -30px;\r\n  left: 50%;\r\n  transform: translateX(-50%);\r\n  white-space: nowrap;\r\n  color: #6b7280;\r\n  font-size: 11px;\r\n}\r\n\r\n\r\n.smopc-strike-marker strong {\r\n  position: absolute;\r\n  top: 20px;\r\n  left: 50%;\r\n  transform: translateX(-50%);\r\n  white-space: nowrap;\r\n  color: #4c1d95;\r\n  font-size: 13px;\r\n}\r\n\r\n\r\n.smopc-strike-labels {\r\n  display: flex;\r\n  justify-content: space-between;\r\n  margin-top: 30px;\r\n  color: #6b7280;\r\n  font-size: 11px;\r\n}\r\n\r\n\r\n.smopc-scenario-grid {\r\n  display: grid;\r\n  grid-template-columns: repeat(4,1fr);\r\n  gap: 10px;\r\n}\r\n\r\n\r\n.smopc-scenario-grid div {\r\n  padding: 14px;\r\n  border-radius: 9px;\r\n  background: #f9fafb;\r\n}\r\n\r\n\r\n.smopc-scenario-grid span {\r\n  display: block;\r\n  margin-bottom: 6px;\r\n  color: #6b7280;\r\n  font-size: 11px;\r\n}\r\n\r\n\r\n.smopc-scenario-grid strong {\r\n  color: #111827;\r\n  font-size: 15px;\r\n}\r\n\r\n\r\n.smopc-interpretation {\r\n  margin-top: 22px;\r\n  padding: 18px;\r\n  border: 1px solid #ddd6fe;\r\n  border-radius: 11px;\r\n  background: #f5f3ff;\r\n}\r\n\r\n\r\n.smopc-interpretation p {\r\n  margin: 0;\r\n  color: #4b5563;\r\n  font-size: 13px;\r\n  line-height: 1.7;\r\n}\r\n\r\n\r\n.smopc-disclaimer {\r\n  margin-top: 22px;\r\n  padding: 15px;\r\n  border: 1px solid #fde68a;\r\n  border-radius: 9px;\r\n  background: #fffbeb;\r\n  color: #78350f;\r\n  font-size: 11px;\r\n  line-height: 1.6;\r\n}\r\n\r\n\r\n.smopc-footer {\r\n  padding: 14px;\r\n  border-top: 1px solid #e5e7eb;\r\n  background: #f9fafb;\r\n  color: #6b7280;\r\n  text-align: center;\r\n  font-size: 11px;\r\n}\r\n\r\n\r\n@media(max-width:850px) {\r\n\r\n  .smopc-grid {\r\n    grid-template-columns: repeat(2,1fr);\r\n  }\r\n\r\n  .smopc-result-grid {\r\n    grid-template-columns: repeat(2,1fr);\r\n  }\r\n\r\n  .smopc-scenario-grid {\r\n    grid-template-columns: repeat(2,1fr);\r\n  }\r\n\r\n}\r\n\r\n\r\n@media(max-width:600px) {\r\n\r\n  .smopc-tool {\r\n    margin: 15px 5px;\r\n    border-radius: 13px;\r\n  }\r\n\r\n  .smopc-header {\r\n    padding: 23px 16px;\r\n  }\r\n\r\n  .smopc-header h2 {\r\n    font-size: 23px;\r\n  }\r\n\r\n  .smopc-body {\r\n    padding: 17px;\r\n  }\r\n\r\n  .smopc-grid {\r\n    grid-template-columns: 1fr;\r\n  }\r\n\r\n  .smopc-result-grid {\r\n    grid-template-columns: repeat(2,1fr);\r\n  }\r\n\r\n  .smopc-range-box {\r\n    grid-template-columns: 1fr;\r\n  }\r\n\r\n  .smopc-scenario-grid {\r\n    grid-template-columns: 1fr;\r\n  }\r\n\r\n}\r\n\r\n\r\n@media(max-width:400px) {\r\n\r\n  .smopc-result-grid {\r\n    grid-template-columns: 1fr;\r\n  }\r\n\r\n  .smopc-header h2 {\r\n    font-size: 21px;\r\n  }\r\n\r\n}\r\n\r\n<\/style>\r\n\r\n\r\n<script>\r\n\r\n(function() {\r\n\r\n  function initSMOPC() {\r\n\r\n    var tools =\r\n      document.querySelectorAll('.smopc-tool');\r\n\r\n\r\n    tools.forEach(function(tool) {\r\n\r\n      if (\r\n        tool.dataset.smopcLoaded === '1'\r\n      ) {\r\n        return;\r\n      }\r\n\r\n\r\n      tool.dataset.smopcLoaded = '1';\r\n\r\n\r\n      var calculate =\r\n        tool.querySelector(\r\n          '.smopc-calculate'\r\n        );\r\n\r\n\r\n      var error =\r\n        tool.querySelector(\r\n          '.smopc-error'\r\n        );\r\n\r\n\r\n      var results =\r\n        tool.querySelector(\r\n          '.smopc-results'\r\n        );\r\n\r\n\r\n      \/*\r\n       * Format money\r\n       *\/\r\n\r\n      function money(value) {\r\n\r\n        if (!isFinite(value)) {\r\n          return '\u20b90';\r\n        }\r\n\r\n        return '\u20b9' +\r\n          Number(value).toLocaleString(\r\n            'en-IN',\r\n            {\r\n              maximumFractionDigits: 2\r\n            }\r\n          );\r\n\r\n      }\r\n\r\n\r\n      \/*\r\n       * Format percentage\r\n       *\/\r\n\r\n      function percent(value) {\r\n\r\n        if (!isFinite(value)) {\r\n          return '0%';\r\n        }\r\n\r\n        return Number(value).toLocaleString(\r\n          'en-IN',\r\n          {\r\n            maximumFractionDigits: 2\r\n          }\r\n        ) + '%';\r\n\r\n      }\r\n\r\n\r\n      \/*\r\n       * Standard normal CDF\r\n       *\/\r\n\r\n      function normalCDF(x) {\r\n\r\n        var sign =\r\n          x < 0 ? -1 : 1;\r\n\r\n\r\n        x =\r\n          Math.abs(x) \/\r\n          Math.sqrt(2);\r\n\r\n\r\n        var t =\r\n          1 \/\r\n          (\r\n            1 +\r\n            0.3275911 * x\r\n          );\r\n\r\n\r\n        var a1 =\r\n          0.254829592;\r\n\r\n\r\n        var a2 =\r\n          -0.284496736;\r\n\r\n\r\n        var a3 =\r\n          1.421413741;\r\n\r\n\r\n        var a4 =\r\n          -1.453152027;\r\n\r\n\r\n        var a5 =\r\n          1.061405429;\r\n\r\n\r\n        var erf =\r\n          1 -\r\n          (\r\n            (\r\n              (\r\n                (\r\n                  (\r\n                    a5 * t +\r\n                    a4\r\n                  ) * t +\r\n                  a3\r\n                ) * t +\r\n                a2\r\n              ) * t +\r\n              a1\r\n            ) *\r\n            t\r\n          ) *\r\n          Math.exp(\r\n            -x * x\r\n          );\r\n\r\n\r\n        return 0.5 *\r\n          (\r\n            1 +\r\n            sign * erf\r\n          );\r\n\r\n      }\r\n\r\n\r\n      \/*\r\n       * Calculate d2.\r\n       *\r\n       * d2 is useful for\r\n       * risk-neutral probability\r\n       * estimates at expiry.\r\n       *\/\r\n\r\n      function calculateD2(\r\n        S,\r\n        K,\r\n        T,\r\n        sigma,\r\n        rate\r\n      ) {\r\n\r\n        if (\r\n          T <= 0 ||\r\n          sigma <= 0\r\n        ) {\r\n\r\n          return null;\r\n\r\n        }\r\n\r\n\r\n        return (\r\n          Math.log(S \/ K) +\r\n          (\r\n            rate -\r\n            0.5 *\r\n            sigma *\r\n            sigma\r\n          ) *\r\n          T\r\n        ) \/\r\n        (\r\n          sigma *\r\n          Math.sqrt(T)\r\n        );\r\n\r\n      }\r\n\r\n\r\n      calculate.addEventListener(\r\n        'click',\r\n        function() {\r\n\r\n\r\n          error.style.display =\r\n            'none';\r\n\r\n\r\n          var S =\r\n            parseFloat(\r\n              tool.querySelector(\r\n                '.smopc-spot'\r\n              ).value\r\n            );\r\n\r\n\r\n          var K =\r\n            parseFloat(\r\n              tool.querySelector(\r\n                '.smopc-strike'\r\n              ).value\r\n            );\r\n\r\n\r\n          var days =\r\n            parseFloat(\r\n              tool.querySelector(\r\n                '.smopc-days'\r\n              ).value\r\n            );\r\n\r\n\r\n          var iv =\r\n            parseFloat(\r\n              tool.querySelector(\r\n                '.smopc-iv'\r\n              ).value\r\n            ) \/ 100;\r\n\r\n\r\n          var rate =\r\n            parseFloat(\r\n              tool.querySelector(\r\n                '.smopc-rate'\r\n              ).value\r\n            ) \/ 100;\r\n\r\n\r\n          var lower =\r\n            parseFloat(\r\n              tool.querySelector(\r\n                '.smopc-lower'\r\n              ).value\r\n            );\r\n\r\n\r\n          var upper =\r\n            parseFloat(\r\n              tool.querySelector(\r\n                '.smopc-upper'\r\n              ).value\r\n            );\r\n\r\n\r\n          var type =\r\n            tool.querySelector(\r\n              '.smopc-type'\r\n            ).value;\r\n\r\n\r\n          \/*\r\n           * Validation\r\n           *\/\r\n\r\n          if (\r\n\r\n            !isFinite(S) ||\r\n            !isFinite(K) ||\r\n            !isFinite(days) ||\r\n            !isFinite(iv) ||\r\n            !isFinite(rate) ||\r\n            !isFinite(lower) ||\r\n            !isFinite(upper) ||\r\n\r\n            S <= 0 ||\r\n            K <= 0 ||\r\n            days <= 0 ||\r\n            iv <= 0 ||\r\n            lower <= 0 ||\r\n            upper <= 0\r\n\r\n          ) {\r\n\r\n            error.textContent =\r\n              'Please enter valid positive values in all required fields.';\r\n\r\n            error.style.display =\r\n              'block';\r\n\r\n            results.style.display =\r\n              'none';\r\n\r\n            return;\r\n\r\n          }\r\n\r\n\r\n          if (\r\n            lower >= upper\r\n          ) {\r\n\r\n            error.textContent =\r\n              'Lower Target Price must be less than Upper Target Price.';\r\n\r\n            error.style.display =\r\n              'block';\r\n\r\n            results.style.display =\r\n              'none';\r\n\r\n            return;\r\n\r\n          }\r\n\r\n\r\n          \/*\r\n           * Time in years\r\n           *\/\r\n\r\n          var T =\r\n            days \/ 365;\r\n\r\n\r\n          \/*\r\n           * d2\r\n           *\/\r\n\r\n          var d2 =\r\n            calculateD2(\r\n              S,\r\n              K,\r\n              T,\r\n              iv,\r\n              rate\r\n            );\r\n\r\n\r\n          if (\r\n            d2 === null\r\n          ) {\r\n\r\n            error.textContent =\r\n              'Unable to calculate the probability with the entered values.';\r\n\r\n            error.style.display =\r\n              'block';\r\n\r\n            return;\r\n\r\n          }\r\n\r\n\r\n          \/*\r\n           * Probability underlying\r\n           * finishes above strike.\r\n           *\r\n           * This is the risk-neutral\r\n           * lognormal probability.\r\n           *\/\r\n\r\n          var probabilityAboveStrike =\r\n            normalCDF(d2);\r\n\r\n\r\n          var probabilityBelowStrike =\r\n            1 -\r\n            probabilityAboveStrike;\r\n\r\n\r\n          \/*\r\n           * Call ITM:\r\n           * S_T > K\r\n           *\/\r\n\r\n          var callITM =\r\n            probabilityAboveStrike;\r\n\r\n\r\n          \/*\r\n           * Put ITM:\r\n           * S_T < K\r\n           *\/\r\n\r\n          var putITM =\r\n            probabilityBelowStrike;\r\n\r\n\r\n          \/*\r\n           * Select ITM probability\r\n           *\/\r\n\r\n          var itm =\r\n            type === 'call'\r\n            ? callITM\r\n            : putITM;\r\n\r\n\r\n          var otm =\r\n            1 -\r\n            itm;\r\n\r\n\r\n          \/*\r\n           * Target probabilities\r\n           *\/\r\n\r\n          function probabilityAbove(\r\n            target\r\n          ) {\r\n\r\n            var d =\r\n              (\r\n                Math.log(S \/ target) +\r\n                (\r\n                  rate -\r\n                  0.5 *\r\n                  iv *\r\n                  iv\r\n                ) *\r\n                T\r\n              ) \/\r\n              (\r\n                iv *\r\n                Math.sqrt(T)\r\n              );\r\n\r\n\r\n            return normalCDF(d);\r\n\r\n          }\r\n\r\n\r\n          var probabilityAboveUpper =\r\n            probabilityAbove(\r\n              upper\r\n            );\r\n\r\n\r\n          var probabilityBelowLower =\r\n            1 -\r\n            probabilityAbove(\r\n              lower\r\n            );\r\n\r\n\r\n          var probabilityInside =\r\n            Math.max(\r\n              0,\r\n              1 -\r\n              probabilityBelowLower -\r\n              probabilityAboveUpper\r\n            );\r\n\r\n\r\n          \/*\r\n           * Probability above lower\r\n           *\/\r\n\r\n          var probabilityAboveLower =\r\n            probabilityAbove(\r\n              lower\r\n            );\r\n\r\n\r\n          \/*\r\n           * Probability below upper\r\n           *\/\r\n\r\n          var probabilityBelowUpper =\r\n            1 -\r\n            probabilityAbove(\r\n              upper\r\n            );\r\n\r\n\r\n          \/*\r\n           * Expected move.\r\n           *\r\n           * One standard deviation\r\n           * percentage move.\r\n           *\/\r\n\r\n          var expectedMovePercent =\r\n            iv *\r\n            Math.sqrt(T);\r\n\r\n\r\n          var expectedMove =\r\n            S *\r\n            expectedMovePercent;\r\n\r\n\r\n          var rangeLow =\r\n            S -\r\n            expectedMove;\r\n\r\n\r\n          var rangeHigh =\r\n            S +\r\n            expectedMove;\r\n\r\n\r\n          \/*\r\n           * Display probabilities\r\n           *\/\r\n\r\n          tool.querySelector(\r\n            '.smopc-itm'\r\n          ).textContent =\r\n            percent(\r\n              itm * 100\r\n            );\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-otm'\r\n          ).textContent =\r\n            percent(\r\n              otm * 100\r\n            );\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-above'\r\n          ).textContent =\r\n            percent(\r\n              probabilityAboveStrike *\r\n              100\r\n            );\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-below'\r\n          ).textContent =\r\n            percent(\r\n              probabilityBelowStrike *\r\n              100\r\n            );\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-above-upper'\r\n          ).textContent =\r\n            percent(\r\n              probabilityAboveUpper *\r\n              100\r\n            );\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-below-lower'\r\n          ).textContent =\r\n            percent(\r\n              probabilityBelowLower *\r\n              100\r\n            );\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-inside'\r\n          ).textContent =\r\n            percent(\r\n              probabilityInside *\r\n              100\r\n            );\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-expected-move'\r\n          ).textContent =\r\n            money(\r\n              expectedMove\r\n            );\r\n\r\n\r\n          \/*\r\n           * Expected range\r\n           *\/\r\n\r\n          tool.querySelector(\r\n            '.smopc-range-low'\r\n          ).textContent =\r\n            money(\r\n              Math.max(\r\n                0,\r\n                rangeLow\r\n              )\r\n            );\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-range-current'\r\n          ).textContent =\r\n            money(S);\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-range-high'\r\n          ).textContent =\r\n            money(rangeHigh);\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-range-text'\r\n          ).textContent =\r\n            'Based on the entered implied volatility and time to expiry, ' +\r\n            'the theoretical one-standard-deviation range is approximately ' +\r\n            money(Math.max(0, rangeLow)) +\r\n            ' to ' +\r\n            money(rangeHigh) +\r\n            '. This is a model-based range, not a guaranteed trading range.';\r\n\r\n\r\n          \/*\r\n           * Probability bars\r\n           *\/\r\n\r\n          var belowBar =\r\n            tool.querySelector(\r\n              '.smopc-bar-below'\r\n            );\r\n\r\n\r\n          var insideBar =\r\n            tool.querySelector(\r\n              '.smopc-bar-inside'\r\n            );\r\n\r\n\r\n          var aboveBar =\r\n            tool.querySelector(\r\n              '.smopc-bar-above'\r\n            );\r\n\r\n\r\n          belowBar.style.width =\r\n            (\r\n              probabilityBelowLower *\r\n              100\r\n            ) + '%';\r\n\r\n\r\n          belowBar.querySelector(\r\n            'span'\r\n          ).textContent =\r\n            percent(\r\n              probabilityBelowLower *\r\n              100\r\n            );\r\n\r\n\r\n          insideBar.style.width =\r\n            (\r\n              probabilityInside *\r\n              100\r\n            ) + '%';\r\n\r\n\r\n          insideBar.querySelector(\r\n            'span'\r\n          ).textContent =\r\n            percent(\r\n              probabilityInside *\r\n              100\r\n            );\r\n\r\n\r\n          aboveBar.style.width =\r\n            (\r\n              probabilityAboveUpper *\r\n              100\r\n            ) + '%';\r\n\r\n\r\n          aboveBar.querySelector(\r\n            'span'\r\n          ).textContent =\r\n            percent(\r\n              probabilityAboveUpper *\r\n              100\r\n            );\r\n\r\n\r\n          \/*\r\n           * Strike visual\r\n           *\r\n           * Position strike relative to\r\n           * a broad \u00b12 expected move range.\r\n           *\/\r\n\r\n          var visualLow =\r\n            Math.max(\r\n              0,\r\n              S -\r\n              2 *\r\n              expectedMove\r\n            );\r\n\r\n\r\n          var visualHigh =\r\n            S +\r\n            2 *\r\n            expectedMove;\r\n\r\n\r\n          var strikePosition =\r\n            (\r\n              (K - visualLow) \/\r\n              (visualHigh - visualLow)\r\n            ) * 100;\r\n\r\n\r\n          strikePosition =\r\n            Math.max(\r\n              5,\r\n              Math.min(\r\n                95,\r\n                strikePosition\r\n              )\r\n            );\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-strike-marker'\r\n          ).style.left =\r\n            strikePosition + '%';\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-strike-value'\r\n          ).textContent =\r\n            money(K);\r\n\r\n\r\n          \/*\r\n           * Scenarios\r\n           *\/\r\n\r\n          tool.querySelector(\r\n            '.smopc-above-lower'\r\n          ).textContent =\r\n            percent(\r\n              probabilityAboveLower *\r\n              100\r\n            );\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-below-upper'\r\n          ).textContent =\r\n            percent(\r\n              probabilityBelowUpper *\r\n              100\r\n            );\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-between'\r\n          ).textContent =\r\n            percent(\r\n              probabilityInside *\r\n              100\r\n            );\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-scenario-strike'\r\n          ).textContent =\r\n            money(K);\r\n\r\n\r\n          \/*\r\n           * Interpretation\r\n           *\/\r\n\r\n          var interpretation =\r\n            'For the selected ' +\r\n            (\r\n              type === 'call'\r\n              ? 'Call'\r\n              : 'Put'\r\n            ) +\r\n            ' option, the model estimates a ' +\r\n            percent(\r\n              itm * 100\r\n            ) +\r\n            ' theoretical probability of finishing in the money at expiry. ';\r\n\r\n\r\n          interpretation +=\r\n            'The probability of the underlying finishing above ' +\r\n            money(upper) +\r\n            ' is approximately ' +\r\n            percent(\r\n              probabilityAboveUpper * 100\r\n            ) +\r\n            ', while the probability of finishing below ' +\r\n            money(lower) +\r\n            ' is approximately ' +\r\n            percent(\r\n              probabilityBelowLower * 100\r\n            ) +\r\n            '. ';\r\n\r\n\r\n          interpretation +=\r\n            'The estimated probability of finishing between the two target prices is ' +\r\n            percent(\r\n              probabilityInside * 100\r\n            ) +\r\n            '. ';\r\n\r\n\r\n          interpretation +=\r\n            'The expected one-standard-deviation move based on the entered volatility ' +\r\n            'is approximately ' +\r\n            money(expectedMove) +\r\n            ' in either direction.';\r\n\r\n\r\n          tool.querySelector(\r\n            '.smopc-interpretation-text'\r\n          ).textContent =\r\n            interpretation;\r\n\r\n\r\n          \/*\r\n           * Show results\r\n           *\/\r\n\r\n          results.style.display =\r\n            'block';\r\n\r\n\r\n          \/*\r\n           * Mobile scroll\r\n           *\/\r\n\r\n          if (\r\n            window.innerWidth < 600\r\n          ) {\r\n\r\n            setTimeout(\r\n              function() {\r\n\r\n                results.scrollIntoView({\r\n                  behavior: 'smooth',\r\n                  block: 'start'\r\n                });\r\n\r\n              },\r\n              100\r\n            );\r\n\r\n          }\r\n\r\n        }\r\n\r\n      );\r\n\r\n    });\r\n\r\n  }\r\n\r\n\r\n  if (\r\n    document.readyState ===\r\n    'loading'\r\n  ) {\r\n\r\n    document.addEventListener(\r\n      'DOMContentLoaded',\r\n      initSMOPC\r\n    );\r\n\r\n  } else {\r\n\r\n    initSMOPC();\r\n\r\n  }\r\n\r\n})();\r\n\r\n<\/script>\n<p>The <strong><a href=\"https:\/\/www.stockmaster.in\/universe\/\">StockMaster Universe<\/a> Option Probability Calculator<\/strong> is an educational tool designed to help F&amp;O traders understand the theoretical probability of different price outcomes before an options contract reaches expiry.<\/p>\n<p><a href=\"https:\/\/www.stockmaster.in\/universe\/fno-option-strategy-builder\/\">Options trading<\/a> involves uncertainty, and traders often want to know how likely an underlying asset is to finish above a strike price, below a strike price or within a particular price range. This calculator provides model-based probability estimates using factors such as the current underlying price, strike price, implied volatility and time remaining until expiry.<\/p>\n<h3>What Is Option Probability?<\/h3>\n<p>Option probability refers to the estimated likelihood of an underlying asset reaching a particular price level or finishing in a particular area at expiry.<\/p>\n<p>For example, an options trader may want to estimate the theoretical probability that an index will finish above a particular strike price at expiry. A trader may also want to estimate the probability that the underlying remains within a specific range.<\/p>\n<p>These calculations can help traders understand the potential distribution of outcomes, but they should not be interpreted as guaranteed predictions.<\/p>\n<h4>How Does the Calculator Work?<\/h4>\n<p>The StockMaster Universe calculator allows you to enter:<\/p>\n<ul>\n<li>Current underlying price<\/li>\n<li>Option strike price<\/li>\n<li>Days to expiry<\/li>\n<li>Implied volatility<\/li>\n<li>Risk-free interest rate<\/li>\n<li>Call or Put<\/li>\n<li>Lower target price<\/li>\n<li>Upper target price<\/li>\n<\/ul>\n<p>The calculator then produces several theoretical probability estimates.<\/p>\n<p>These include <strong>probability of finishing ITM, probability of finishing OTM, probability above the strike, probability below the strike and probability of finishing inside a selected price range<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The StockMaster Universe Option Probability Calculator is an educational tool designed to help F&amp;O traders understand the theoretical probability of 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[62],"tags":[],"class_list":["post-561","post","type-post","status-publish","format-standard","hentry","category-fo-trading-tools"],"rttpg_featured_image_url":null,"rttpg_author":{"display_name":"StockMaster Universe","author_link":"https:\/\/www.stockmaster.in\/universe\/author\/unistockadmin\/"},"rttpg_comment":0,"rttpg_category":"<a href=\"https:\/\/www.stockmaster.in\/universe\/category\/tools\/fo-trading-tools\/\" rel=\"category tag\">F&amp;O Trading Tools<\/a>","rttpg_excerpt":"The StockMaster Universe Option Probability Calculator is an educational tool designed to help F&amp;O traders understand the theoretical probability of [&hellip;]","_links":{"self":[{"href":"https:\/\/www.stockmaster.in\/universe\/wp-json\/wp\/v2\/posts\/561","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stockmaster.in\/universe\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.stockmaster.in\/universe\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.stockmaster.in\/universe\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.stockmaster.in\/universe\/wp-json\/wp\/v2\/comments?post=561"}],"version-history":[{"count":0,"href":"https:\/\/www.stockmaster.in\/universe\/wp-json\/wp\/v2\/posts\/561\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.stockmaster.in\/universe\/wp-json\/wp\/v2\/media?parent=561"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stockmaster.in\/universe\/wp-json\/wp\/v2\/categories?post=561"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stockmaster.in\/universe\/wp-json\/wp\/v2\/tags?post=561"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}