--- title: "What should I look at in option chain analysis for intraday?" description: "The chain the school uses is a closing snapshot, so its open interest and change in open interest are close to close figures." source_url: "https://www.rupeecase.com/learn/questions/option-chain-analysis-intraday" --- Change in open interest in the chain is a close to close figure, not an intraday one Call and put open interest at the 10 Jun 2026 close, with the change from the previous session, by strike for the 30 Jun 2026 expiry. OI is in units. The school uses end of day files only. Source: NSE end of day data, computed by RupeeCase. As of 10 Jun 2026. The chain the school uses is the close of 10 Jun 2026 for the 30 Jun 2026 expiry. Every open interest figure and every change figure in it is a close to close number. It says what was open at the close and how much it moved since the previous close. It does not say what happened between the two. Intraday trading depends on prices and positions that change through the session. A closing chain cannot show that. The change in open interest for a day is the net result of all the trades in that day, and it can hide a position opened and closed inside the session. A reading taken at the close cannot tell you where the index will be an hour later. Read the chain for the structure of the day's positions. Look at where open interest sits, how it moved since the previous close, and whether the price move that day agreed with it. The module on reading the option chain covers the columns, and the module on open interest covers the change. The NSE option chain page updates through the session, and many people use it intraday. They watch where open interest is added or removed, the volume at each strike and how wide the quotes are. The dated chain has the first two, at the close, and not the third. The school does not use the page for reading, because a screen that changes minute by minute would turn into a signal. The dated chain is for learning the structure, and it should be read as history. **Before you trade.** Derivatives trading carries a high risk of loss. SEBI's study "Profitability of Individual Traders in the Equity Derivatives Segment (FY25 to FY26)" (August 2026) found that 87.7% of individual traders in equity F&O made net losses in FY26, with aggregate net losses of Rs 91,685 crore. [Read the SEBI study](https://www.sebi.gov.in/reports-and-statistics/research/aug-2026/study-profitability-of-individual-traders-in-the-equity-derivatives-segment-fy25-fy26-_103835.html) What should I look at in option chain analysis for intraday?The chain the school uses is a closing snapshot, so its open interest and change in open interest are close to close figures and say nothing about what happened inside the session. A chain can describe the structure of the day's positions, but it cannot time an intraday move. Wrong as stated. A chain describes positions at a close, so it cannot time a turn inside the session. LGo deeper ## Where Learn teaches this. [Go deeperReading the NSE option chain, column by column8 min, Beginner](/learn/path-15/module-15-1-reading-the-nse-option-chain)[Go deeperOI and change in OI on the chain: what they can and cannot tell you8 min, Beginner](/learn/path-15/module-15-2-open-interest-on-the-option-chain)[Go deeperLiquidity in the chain: spreads, volume and tradable strikes9 min, Intermediate](/learn/path-15/module-15-5-option-chain-liquidity) SSources ## Go to the source. 2 sources, NSE the most cited The publisher of each source listed below. Source: Module undefined source list. 1. [NSE option chain page (the school reads dated end of day chains, not the live screen)](https://www.nseindia.com/option-chain) NSE 2. [SEBI investor education, Understanding derivatives](https://investor.sebi.gov.in/understanding_derivatives.html) SEBI ?Questions people ask ## Related questions. [QuestionHow do I read an option chain?Beginner](/learn/questions/how-to-read-option-chain)[QuestionIs the highest call OI strike resistance and the highest put OI strike support?Intermediate, trap check](/learn/questions/highest-oi-support-resistance)[QuestionWhat are open interest, change in OI and cumulative OI?Beginner](/learn/questions/what-is-open-interest)[QuestionLong build-up, short build-up, short covering, long unwinding?Beginner](/learn/questions/long-short-build-up) [All 130 questions](/learn/questions/) Explore next ## Go deeper on this question. * [ToolOption payoff builderLegs on a dated Nifty chain, breakevens and charges](/learn/tools/payoff-builder) * [GlossaryInvesting glossary, 230 termsPlain word definitions, and the app’s own](/learn/glossary) * [Free module 15.1Reading the NSE option chain, column by column8 min read](/learn/path-15/module-15-1-reading-the-nse-option-chain) * [QuestionIs the highest call OI strike resistance and the highest put OI strike support?A short answer with a dated chart](/learn/questions/highest-oi-support-resistance) * [QuestionHow do I read an option chain?A short answer with a dated chart](/learn/questions/how-to-read-option-chain) * [Free module 15.2OI and change in OI on the chain: what they can and cannot tell you8 min read](/learn/path-15/module-15-2-open-interest-on-the-option-chain) Community ## Join my WhatsApp group. 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