{"id":18699,"date":"2026-09-08T01:44:02","date_gmt":"2026-09-08T08:14:02","guid":{"rendered":"https:\/\/shoonya.com\/blog\/?p=18699"},"modified":"2026-09-08T01:44:02","modified_gmt":"2026-09-08T08:14:02","slug":"pre-open-auction-session","status":"publish","type":"post","link":"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/","title":{"rendered":"Revised Pre-Open Session: New Rules, Timings and Key Changes"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\"><\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#What_Is_the_Futures_Pre-Open_Session\" >What Is the Futures Pre-Open Session?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#Which_Futures_Instruments_are_Covered\" >Which Futures Instruments are Covered?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#What_Are_the_Revised_Pre-Open_Session_Timings\" >What Are the Revised Pre-Open Session Timings?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#How_Does_the_Revised_Pre-Open_Session_Work\" >How Does the Revised Pre-Open Session Work?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#How_Is_the_Opening_Price_Determined\" >How Is the Opening Price Determined?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#How_Are_Orders_Matched_During_the_Pre-Open_Session\" >How Are Orders Matched During the Pre-Open Session?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#What_Happens_to_Unmatched_Pre-Open_Orders\" >What Happens to Unmatched Pre-Open Orders?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#What_Are_the_Key_Pre-Open_Session_Rules\" >What Are the Key Pre-Open Session Rules?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#Are_Margins_Checked_During_Pre-Open\" >Are Margins Checked During Pre-Open?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#What_Information_Can_Traders_See_During_Pre-Open\" >What Information Can Traders See During Pre-Open?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#How_Is_the_Pre-Open_Session_Different_From_Normal_Trading\" >How Is the Pre-Open Session Different From Normal Trading?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#Final_Thoughts\" >Final Thoughts<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/#Revised_Pre-Open_Session_FAQs\" >Revised Pre-Open Session : FAQs<\/a><\/li><\/ul><\/nav><\/div>\n<nav style=\"--separator: &quot;\/&quot;\" class=\"wp-block-breadcrumbs\" aria-label=\"Breadcrumbs\"><ol><li><a href=\"https:\/\/shoonya.com\/blog\/\">Home<\/a><\/li><li><a href=\"https:\/\/shoonya.com\/blog\/stock-market\/\">Stock Market<\/a><\/li><li><span aria-current=\"page\">Revised Pre-Open Session: New Rules, Timings and Key Changes<\/span><\/li><\/ol><\/nav>\n\n\n<meta charset=\"UTF-8\">\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n \n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin=\"\">\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Figtree:wght@300;400;500;600;700;800&amp;family=Bricolage+Grotesque:wght@700;800&amp;display=swap\" rel=\"stylesheet\">\n<style>\n  :root{\n    --copper:#EFA145;\n    --copper-deep:#D17800;\n    --steel:#424242;\n    --forest:#082F25;\n    --forest-2:#0C3D30;\n    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table{font-size:14px;}\n  }\n\n  .entry-title,\n  .post-title,\n  .single-post h1,\n  h1.entry-title{color:#000!important;}\n<\/style>\n\n\n\n  <div class=\"body\">\n    <p>The first few minutes of trading can see sharp price movements as market participants react to overnight news and changing conditions. To support orderly opening price discovery and align the process with the Closing Auction Session (CAS), the exchange has revised its 15-minute pre-open market framework.<\/p>\n    <p>Effective September 7, 2026, the revised pre-open session will operate through a call auction mechanism from 9:00 AM to 9:15 AM for eligible index and single-stock futures. The session will follow defined stages for order entry, order matching and opening price discovery.<\/p>\n    <p>Here is what the new timings and rules mean for traders\/investors.<\/p>\n\n    <h2><span class=\"ez-toc-section\" id=\"What_Is_the_Futures_Pre-Open_Session\"><\/span>What Is the Futures Pre-Open Session?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>The equity derivatives pre-open session is a 15-minute session held before the continuous trading session begins. It runs from 9:00 AM to 9:15 AM and uses a call auction mechanism to determine the opening price of eligible futures contracts.<\/p>\n    <p>During this session, orders are first collected and then matched at a single equilibrium price, which becomes the opening price for the day.<\/p>\n    <p>However, the session does not apply to all FnO contracts. It covers eligible index futures and single-stock futures, while options and spread contracts are excluded.<\/p>\n\n    <h2><span class=\"ez-toc-section\" id=\"Which_Futures_Instruments_are_Covered\"><\/span>Which Futures Instruments are Covered?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>The session applies to:<\/p>\n    <ul class=\"doc\">\n      <li>Single-stock futures<\/li>\n      <li>Index futures<\/li>\n    <\/ul>\n    <p>For most of the contract cycle, it applies only to current-month futures. During the last five trading days before current-month expiry, it also extends to eligible next-month futures. Far-month futures are outside its scope.<\/p>\n    <p>It does not apply to options or spread contracts on indices and stocks. It is also not conducted in futures of an underlying security on its ex-date for a corporate action arising from a scheme of arrangement.<\/p>\n\n    <h2><span class=\"ez-toc-section\" id=\"What_Are_the_Revised_Pre-Open_Session_Timings\"><\/span>What Are the Revised Pre-Open Session Timings?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>The overall pre-open timings remain the same, i.e. 9:00 AM to 9:15 AM, but the revised framework changes what traders can do within the order-entry window.<\/p>\n    <div class=\"tbl-scroll\">\n      <table>\n        <thead>\n          <tr><th>Stage<\/th><th>Revised Timing<\/th><th>What Happens?<\/th><\/tr>\n        <\/thead>\n        <tbody>\n          <tr><td>Order entry \u2013 Phase 1<\/td><td>9:00 AM\u20139:05 AM<\/td><td>Limit and market orders can be entered, modified and cancelled<\/td><\/tr>\n          <tr><td>Order entry \u2013 Phase 2<\/td><td>9:05 AM\u20139:10 AM*<\/td><td>Limit orders can be entered, modified and cancelled; market orders cannot be modified or cancelled<\/td><\/tr>\n          <tr><td>Order matching<\/td><td>From random closure to 9:12 AM<\/td><td>Opening price is determined and eligible orders are matched<\/td><\/tr>\n          <tr><td>Buffer period<\/td><td>9:12 AM\u20139:15 AM<\/td><td>Market transitions to continuous trading<\/td><\/tr>\n          <tr><td>Continuous trading<\/td><td>From 9:15 AM<\/td><td>Normal market trading begins<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n    <div class=\"quote\">\n      <p><strong>Note:<\/strong> In case of index-based market-wide circuit filter breach or any outage (stopping of trading, either suo moto by Exchange or by virtue of reasons beyond control of stock exchange), the market shall open with a pre-open session, and its timings shall be informed separately on that day.<\/p>\n    <\/div>\n\n    <h2><span class=\"ez-toc-section\" id=\"How_Does_the_Revised_Pre-Open_Session_Work\"><\/span>How Does the Revised Pre-Open Session Work?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>The pre-open session works through a call auction rather than continuous matching. Orders first accumulate during the collection period.<\/p>\n    <p>The process can be understood in four stages.<\/p>\n    <ol class=\"steps\">\n      <li><strong>Orders are collected:<\/strong> Traders submit eligible orders during the prescribed windows. Orders can be modified or cancelled subject to the applicable time and order-type restrictions.<\/li>\n      <li><strong>Indicative information is calculated:<\/strong> Based on the order book, the exchange calculates information including the indicative equilibrium\/opening price, total buy and sell quantities, and the percentage change in the indicative equilibrium price from the previous close.<\/li>\n      <li><strong>A single opening price is determined:<\/strong> Instead of trades occurring continuously at multiple prices, eligible orders are matched at the equilibrium price determined by the auction.<\/li>\n      <li><strong>The market transitions to regular trading:<\/strong> After matching and trade confirmation, the 9:12\u20139:15 AM buffer allows the system to transition to the continuous trading session.<\/li>\n    <\/ol>\n    <p>This separation between order collection and order matching is the defining feature of the call-auction mechanism.<\/p>\n\n    <h2><span class=\"ez-toc-section\" id=\"How_Is_the_Opening_Price_Determined\"><\/span>How Is the Opening Price Determined?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>The opening price is based on demand and supply in the pre-open order book. The exchange follows a sequence of criteria to identify the equilibrium price.<\/p>\n    <p>First, the system identifies the price at which the maximum quantity can be executed.<\/p>\n    <p>&#8211; If more than one price qualifies, it selects the price with the lowest absolute unmatched order quantity, or minimum order imbalance.<\/p>\n    <p>&#8211; If multiple prices still qualify, the equilibrium price is the one closest to the previous day&#8217;s closing price. Exchange also specifies how the calculation works when the previous close lies at the midpoint of two qualifying prices and how the reference price is handled following a corporate action. Both market and limit orders are considered when calculating the equilibrium price.<\/p>\n    <p>Once discovered, this equilibrium price becomes the contract&#8217;s opening price for the day.<\/p>\n    <p>There are two special situations:<\/p>\n    <ul class=\"doc\">\n      <li>If only market orders exist on both the buy and sell sides, orders are matched at the base price, which becomes the opening price.<\/li>\n      <li>If no price is discovered during pre-open, the first trade price in the normal market becomes the opening price.<\/li>\n    <\/ul>\n\n    <h2><span class=\"ez-toc-section\" id=\"How_Are_Orders_Matched_During_the_Pre-Open_Session\"><\/span>How Are Orders Matched During the Pre-Open Session?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>Once order collection ends, eligible orders are matched at the single equilibrium price.<\/p>\n    <p>However, the exchange specifies a clear priority sequence.<\/p>\n    <ul class=\"doc\">\n      <li>Eligible market orders are matched against one another based on time priority.<\/li>\n      <li>Remaining eligible market orders are matched against limit orders according to the relevant time-and-price priority.<\/li>\n      <li>Remaining limit orders are then matched against other limit orders using price-time priority.<\/li>\n    <\/ul>\n    <p>Market orders therefore receive priority over limit orders in the matching sequence.<\/p>\n    <p>Once the matching period begins, order modification, order cancellation, trade modification and trade cancellation are not permitted. The exchange also states that trades executed during pre-open cannot subsequently be cancelled through a trade-cancellation request.<\/p>\n\n    <h2><span class=\"ez-toc-section\" id=\"What_Happens_to_Unmatched_Pre-Open_Orders\"><\/span>What Happens to Unmatched Pre-Open Orders?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>An order does not necessarily disappear simply because it was not executed during the auction.<\/p>\n    <p>The treatment depends on whether it was a limit or market order.<\/p>\n    <div class=\"tbl-scroll\">\n      <table>\n        <thead>\n          <tr><th>Unmatched Order<\/th><th>Treatment After Pre-Open<\/th><\/tr>\n        <\/thead>\n        <tbody>\n          <tr><td>Limit order<\/td><td>Moves to the normal market with its original timestamp<\/td><\/tr>\n          <tr><td>Market order<\/td><td>Converted to a limit order at the discovered equilibrium price and moved to the normal market with a modified timestamp<\/td><\/tr>\n          <tr><td>Market order when no equilibrium price is found<\/td><td>Moves to the normal market at the base price<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n    <p>Traders cannot modify or cancel these outstanding orders in the interval before the normal market starts.<\/p>\n\n    <h2><span class=\"ez-toc-section\" id=\"What_Are_the_Key_Pre-Open_Session_Rules\"><\/span>What Are the Key Pre-Open Session Rules?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>Beyond timings and price discovery, several operational rules determine how orders behave during the session.<\/p>\n    <p>Here are the rules traders should know:<\/p>\n    <div class=\"tbl-scroll\">\n      <table>\n        <thead>\n          <tr><th>Rule<\/th><th>Pre-Open Treatment<\/th><\/tr>\n        <\/thead>\n        <tbody>\n          <tr><td>Market orders<\/td><td>Permitted during the initial 5 minutes<\/td><\/tr>\n          <tr><td>Limit orders<\/td><td>Permitted during the applicable order-entry window<\/td><\/tr>\n          <tr><td>Algo market orders<\/td><td>Permitted during the initial 5 minutes<\/td><\/tr>\n          <tr><td>Stop-loss and IOC orders<\/td><td>Rejected in pre-open<\/td><\/tr>\n          <tr><td>Spread contracts<\/td><td>Not eligible<\/td><\/tr>\n          <tr><td>Options contracts<\/td><td>Not eligible<\/td><\/tr>\n          <tr><td>Margin validation<\/td><td>Applicable before order acceptance<\/td><\/tr>\n          <tr><td>Self Trade Prevention Check<\/td><td>Applicable during order collection<\/td><\/tr>\n          <tr><td>Cancel on Logout<\/td><td>Not applicable<\/td><\/tr>\n          <tr><td>Kill Switch<\/td><td>Not applicable to pre-open orders<\/td><\/tr>\n          <tr><td>Trade cancellation after execution<\/td><td>Not permitted<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <h2><span class=\"ez-toc-section\" id=\"Are_Margins_Checked_During_Pre-Open\"><\/span>Are Margins Checked During Pre-Open?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>Yes, the exchange states that every pre-open order is validated against the applicable margin requirements and available capital before acceptance.<\/p>\n    <p>If sufficient capital is not available to meet the margin requirement, the order is not accepted into the pre-open session.<\/p>\n\n    <h2><span class=\"ez-toc-section\" id=\"What_Information_Can_Traders_See_During_Pre-Open\"><\/span>What Information Can Traders See During Pre-Open?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>The session also provides indicative market information before the opening price is finalised.<\/p>\n    <p>The exchange states that the NEAT Trading Terminal disseminates information such as:<\/p>\n    <ul class=\"doc\">\n      <li>Indicative equilibrium price<\/li>\n      <li>Indicative tradable quantity at that price<\/li>\n      <li>Cumulative buy and sell quantities<\/li>\n      <li>Indicative imbalance quantity at the equilibrium price<\/li>\n      <li>Imbalance based on outstanding market-order quantities<\/li>\n    <\/ul>\n    <div class=\"quote\">\n      <p><strong>Note:<\/strong> These figures are indicative, meaning traders should not treat them as the final opening price before the auction is completed.<\/p>\n    <\/div>\n\n    <h2><span class=\"ez-toc-section\" id=\"How_Is_the_Pre-Open_Session_Different_From_Normal_Trading\"><\/span>How Is the Pre-Open Session Different From Normal Trading?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>The biggest difference is how and when trades are matched.<\/p>\n    <div class=\"tbl-scroll\">\n      <table>\n        <thead>\n          <tr><th>Parameter<\/th><th>F&amp;O Pre-Open<\/th><th>Continuous Market<\/th><\/tr>\n        <\/thead>\n        <tbody>\n          <tr><td>Main purpose<\/td><td>Opening-price discovery<\/td><td>Regular trading<\/td><\/tr>\n          <tr><td>Timing<\/td><td>9:00\u20139:15 AM<\/td><td>Begins at 9:15 AM<\/td><\/tr>\n          <tr><td>Mechanism<\/td><td>Call auction<\/td><td>Continuous order matching<\/td><\/tr>\n          <tr><td>Execution price<\/td><td>Single equilibrium price during matching<\/td><td>Multiple prices as orders match<\/td><\/tr>\n          <tr><td>Eligible contracts<\/td><td>Specified futures contracts<\/td><td>Wider set of eligible F&amp;O contracts<\/td><\/tr>\n          <tr><td>Order activity<\/td><td>Depends on the pre-open phase<\/td><td>Subject to normal-market rules<\/td><\/tr>\n          <tr><td>Trade cancellation<\/td><td>Not permitted for pre-open executions<\/td><td>Normal applicable framework<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <h2><span class=\"ez-toc-section\" id=\"Final_Thoughts\"><\/span>Final Thoughts<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>The revised pre-open framework introduces a defined opening-price discovery process for eligible index and stock futures, with distinct windows for market orders, limit orders, matching and transition to continuous trading.<\/p>\n    <p>For traders, the key is to understand which contracts qualify and what actions are permitted at each stage, particularly around the 9:05 AM market-order restriction and random closure of order collection. Before placing a Futures order, it is also important to consider margins, leverage and the risks associated with derivatives.<\/p>\n    \n       <div class=\"outlook\">\n      <p>Once you understand how the pre-open mechanism fits into the trading day, you can use <a href=\"https:\/\/apptrove.shoonya.com\/d\/home\"> Shoonya&#8217;s trading platform <\/a>\n to access the markets and manage your orders with greater clarity.<\/p>\n    <\/div>\n  \n\n    <h2><span class=\"ez-toc-section\" id=\"Revised_Pre-Open_Session_FAQs\"><\/span>Revised Pre-Open Session : FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <div class=\"faq\">\n      <details class=\"faq-item\">\n        <summary class=\"faq-q\">What is the pre-open session for equity and equity derivatives segments?<span class=\"faq-icon\">+<\/span><\/summary>\n        <p class=\"faq-a\">The pre-open session is a 15-minute call-auction session before continuous trading. It is designed to collect orders and discover an opening price for eligible index and single-stock futures.<\/p>\n      <\/details>\n      <details class=\"faq-item\">\n        <summary class=\"faq-q\">What are the pre-open timings for equity and equity derivatives segments?<span class=\"faq-icon\">+<\/span><\/summary>\n        <p class=\"faq-a\">The session runs from 9:00 AM to 9:15 AM. Under the revised framework, market and limit orders are allowed from 9:00\u20139:05 AM, after which only limit-order activity is allowed during order collection until its random closure; matching concludes by 9:12 AM, followed by a buffer until 9:15 AM.<\/p>\n      <\/details>\n      <details class=\"faq-item\">\n        <summary class=\"faq-q\">Are options included in the Futures pre-open session?<span class=\"faq-icon\">+<\/span><\/summary>\n        <p class=\"faq-a\">The session applies to eligible index and single-stock futures. Options and spread contracts are excluded.<\/p>\n      <\/details>\n      <details class=\"faq-item\">\n        <summary class=\"faq-q\">Which futures contracts are eligible for pre-open?<span class=\"faq-icon\">+<\/span><\/summary>\n        <p class=\"faq-a\">Current-month index and single-stock futures are eligible. During the last five trading days before current-month expiry, the session also extends to next-month futures contracts; far-month contracts are not covered.<\/p>\n      <\/details>\n      <details class=\"faq-item\">\n        <summary class=\"faq-q\">Can market orders be placed throughout the pre-open session?<span class=\"faq-icon\">+<\/span><\/summary>\n        <p class=\"faq-a\">No, under the revised rules, market orders can be entered during the initial five minutes, from 9:00 AM to 9:05 AM. During the subsequent order-entry window, market orders are restricted.<\/p>\n      <\/details>\n      <details class=\"faq-item\">\n        <summary class=\"faq-q\">What happens if no opening price is discovered?<span class=\"faq-icon\">+<\/span><\/summary>\n        <p class=\"faq-a\">If no equilibrium price is discovered during pre-open, the exchange states that the price of the first trade in the normal market becomes the opening price. Unmatched market orders are moved to the normal market at the base price.<\/p>\n      <\/details>\n    <\/div>\n\n    <div class=\"disclaimer\">\n      <strong>Disclaimer:<\/strong> This content is for education and awareness purpose only and should not be considered investment advice or a recommendation. Investments in securities markets are subject to market risks. Read all the related documents carefully before investing.\n    <\/div>\n  <\/div>\n","protected":false},"excerpt":{"rendered":"<p>The first few minutes of trading can see sharp price movements as market participants react to overnight news and changing conditions. To support orderly opening price discovery and align the process with the Closing Auction Session (CAS), the exchange has revised its 15-minute pre-open market framework. Effective September 7, 2026, the revised pre-open session will &hellip; <a href=\"https:\/\/shoonya.com\/blog\/pre-open-auction-session\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Revised Pre-Open Session: New Rules, Timings and Key Changes&#8221;<\/span><\/a><\/p>\n","protected":false},"author":17,"featured_media":18701,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[13],"tags":[10543,8742,10546,10544,10547,10551,10545,10549,10550,10548],"class_list":["post-18699","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stock-market","tag-equity-derivatives","tag-fo-pre-open-session","tag-fo-pre-open-session-changes","tag-fo-pre-open-session-rules","tag-fo-pre-open-timings","tag-nse-pre-open-session-rules","tag-pre-open-session","tag-pre-open-session-fo","tag-pre-open-auction-session","tag-what-is-pre-opening-session-in-stock-market"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Revised Pre-Open Session Rules for Equity and Derivatives<\/title>\n<meta name=\"description\" content=\"The revised pre-open session begins September 7, 2026, for equity and equity derivatives. 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