Analyze NSE Option Chain
data effortlessly
Upload Option Chain CSVs of NSE Indices and F&O Stocks directly from the official NSE website https://www.nseindia.com/option-chain to identify high probable Support & Resistance zones based on real-time OI and volume clusters.
Interactive Option Chain Mapper Tool
To start, download the option chain .CSV file or search table from the National Stock Exchange of India (nseindia.com) for Nifty, Bank Nifty, or stock assets. Drag your file here or click "Upload CSV File" to instantly generate color-mapped support, resistance, Spot Price markers, and Volatility outlier alerts.
Derivatives Education & Option Chain Blog
Comprehensive tutorials on Open Interest, PCR, and Volume clusters
Taking Cues from Global Markets: How Overnight Sentiment Shapes the NSE Option Chain
Learn how overnight cues from Gift Nifty, US indices, crude oil, and the Dollar Index impact early-morning option chain data and institutional positioning.
Read Article →How Traders Identify Support and Resistance Using Option Chain Data
Learn how traders identify support and resistance levels using option chain data and Open Interest concentrations.
Read Article →What Is an Option Chain and Why Do Traders Use It? A Complete Beginner's Guide
If you are learning about options trading, one of the first terms you will encounter is the option chain. Learn how option chains are structured, how to read them, and how experienced traders analyze market sentiment, support levels, and open interest.
Read Article →What Is Put Call Ratio (PCR)? Complete Beginner Guide for Option Traders
Learn what Put Call Ratio (PCR) is, how it is calculated, how traders interpret PCR values, common misconceptions, limitations, and how PCR is used in option chain analysis.
Read Article →What Is Open Interest (OI)? A Complete Beginner's Guide
Learn what Open Interest (OI) is, how it works, how traders interpret OI changes, the difference between OI and volume, and why Open Interest is important in option chain analysis.
Read Article →How to Use Option Chain Analyzer
A concise guide to analyzing NSE Open Interest, Put-Call Ratios, and Volatility anomalies
1. Quick Start Workflow
Option Chain Analyzer processes official National Stock Exchange of India (NSE) option chain CSV exports directly in your browser. All computations run 100% locally in your device memory—no data is uploaded or stored on any external server.
Download Official CSV
Visit nseindia.com/option-chain, select your index or stock, and download the CSV snapshot.
Upload or Drop File
Drag and drop the CSV into the upload area above, or click "Upload CSV File". The parser automatically extracts spot prices and contract strikes.
Analyze Key Levels
Examine the At-The-Money (ATM) strike, automated Support (PCR ≥ 6.0x) and Resistance (CPR ≥ 6.0x) zones, and IV anomaly tags.
2. Key Derivatives Indicators Explained
Open Interest (OI) & Change in OI
Open Interest represents the total active, unsettled option contracts. High OI at specific strikes reflects institutional positioning. Increasing OI confirms new positions, while decreasing OI signals position unwinding or profit booking.
At-The-Money (ATM) Strike
The strike price closest to the underlying spot price. It serves as the market pivot point where gamma and volatility changes have the most immediate impact on option prices.
Put-Call Ratio (PCR)
Calculated as Put Open Interest ÷ Call Open Interest. A high PCR indicates stronger put open interest relative to calls, signaling that option writers are establishing support floors.
Call-Put Ratio (CPR)
Calculated as Call Open Interest ÷ Put Open Interest. A high CPR indicates heavy call open interest relative to puts, signaling strong overhead resistance from option writers.
3. Automated Support & Resistance Highlights (6.0x Rule)
Writing options requires substantial margin capital under exchange guidelines. Consequently, strikes with massive open interest concentrations often act as defense barriers defended by institutional writers:
High-Probability Support (PCR ≥ 6.0x)
Highlighted in Green. Indicates Put Open Interest is at least 6 times greater than Call Open Interest at that strike, identifying an institutional put-writing floor.
High-Probability Resistance (CPR ≥ 6.0x)
Highlighted in Red. Indicates Call Open Interest is at least 6 times greater than Put Open Interest at that strike, identifying a heavy call-writing ceiling.
4. Risk Management & SEBI Compliance
Derivatives trading carries significant financial risk. According to research published by the Securities and Exchange Board of India (SEBI), 9 out of 10 individual retail traders in the equity futures and options segment incur net financial losses.
Confluence Only: Option chain open interest distribution should always be used as a secondary confirmation tool alongside primary price action and technical charts.
No Investment Advice: Option Chain Analyzer is an independent analytical tool built strictly for educational and informational purposes. We do not provide trading recommendations, buy/sell calls, or financial advice.