What you will learn in this lesson
- Understand exactly what an Option chain is and how it's structured
- Learn to read every standard column - premium, OI, volume, IV, Greeks
- Understand how Calls and Puts are displayed side by side around a central strike column
- Practice a step-by-step process for scanning an Option chain confidently
- Bring together everything from Modules 5-8 into one practical, unified skill
Every concept from Modules 5 through 8 - strike price, premium, moneyness, Delta, Theta, Gamma, Vega - comes together on a single screen: the Option chain. This lesson teaches you to read it fluently, step by step.
What Is an Option Chain?
An Option chain is a structured table listing all available strike prices for a chosen underlying and expiry, displaying Call (CE) data on one side and Put (PE) data on the other, typically around a central strike price column.
CALLS (CE) STRIKE PUTS (PE)
┌─────────────────┐ ┌──────────┐ ┌─────────────────┐
│ Premium │ OI │ IV│ │ 23,800 │ │IV │ OI │ Premium │
│ Premium │ OI │ IV│ │ 23,900 │ │IV │ OI │ Premium │
│ Premium │ OI │ IV│ ◄─ ATM │ 24,000 │ ATM ─►│IV │ OI │ Premium │
│ Premium │ OI │ IV│ │ 24,100 │ │IV │ OI │ Premium │
│ Premium │ OI │ IV│ │ 24,200 │ │IV │ OI │ Premium │
└─────────────────┘ └──────────┘ └─────────────────┘Standard Columns, Explained
| Column | What It Shows | Covered In |
|---|---|---|
| Strike Price | The fixed transaction price for that row | Lesson 15 |
| LTP / Premium | Last traded price for that specific Call or Put | Lesson 15 |
| Bid / Ask | Current best buy/sell offers | Lesson 15 |
| Volume | Contracts traded today, for that specific strike | This lesson |
| Open Interest (OI) | Total outstanding contracts for that strike | Module 10 |
| IV | Implied Volatility for that specific strike | Module 11 |
| Delta, Theta, Gamma, Vega | Greeks for that specific strike (if displayed) | Module 8 |
Not every broker displays every column by default - some require toggling on Greeks or IV columns specifically, but the underlying data (and its meaning) is consistent across platforms.
How ITM/ATM/OTM Highlighting Works
Most platforms automatically shade ITM strikes (often with a light background color), making moneyness (Lesson 16) visible at a glance:
- Call side: strikes below the current spot price are typically shaded (ITM for Calls).
- Put side: strikes above the current spot price are typically shaded (ITM for Puts).
- The row closest to the current spot price is generally treated as the ATM row.
This visual shading is a helpful shortcut, but understanding why it’s shaded that way (the Lesson 16 logic) is what lets you actually reason about the data, rather than just following the highlighting blindly.
A Step-by-Step Scanning Process
- Locate the current spot price - usually displayed prominently at the top of the chain.
- Find the ATM strike - typically highlighted or closest to the spot price.
- Scan outward - move toward ITM or OTM strikes depending on your specific goal (higher probability/higher cost, or lower cost/lower probability).
- Check liquidity - Volume and Open Interest for your strikes of interest, before considering an order.
- Check Greeks (if displayed) - Delta for directional sensitivity, Theta for time decay exposure, IV for volatility context.
- Compare Call and Put sides - especially useful if you’re deciding between a directional bet (Lessons 17-22) or a combined strategy (Module 13).
Real-Life Example: Comparing Three Strikes for a Bullish Trade
Suppose you’re bullish on Nifty 50, currently at 24,000, and scanning the Call side of the chain for the near month expiry:
| Strike | Moneyness | Premium (illustrative) | OI | Delta (illustrative) |
|---|---|---|---|---|
| 23,800 | ITM | ₹280 | High | 0.68 |
| 24,000 | ATM | ₹145 | Very High | 0.51 |
| 24,300 | OTM | ₹42 | Moderate | 0.24 |
With this single table, you can directly compare cost, liquidity, and directional sensitivity across three genuinely different risk/reward profiles - exactly the kind of informed comparison an Option chain enables, versus guessing based on premium alone.
Analogy: A Restaurant Menu With Full Nutritional Information
Think of an Option chain like a detailed restaurant menu that, instead of just listing dish names and prices, also shows calories, protein, and spice level for every item, with vegetarian and non-vegetarian options displayed side by side by category.
A basic menu (just names and prices) still lets you order something. But the detailed version lets you make a genuinely informed choice, matched precisely to what you’re looking for - exactly the difference between glancing at just an option’s premium versus reading the full Option chain with OI, IV, and Greeks alongside it.
Common Beginner Mistakes
- Getting overwhelmed trying to read every column at once. Follow the step-by-step process above - start at ATM, work outward, check liquidity and Greeks only for strikes you’re actually considering.
- Ignoring OI and Volume, and only looking at premium. Liquidity context (Lesson 15) matters just as much as the price itself.
- Not checking Greeks when they’re available, missing out on the richer comparison they enable across strikes.
- Assuming every broker’s Option chain looks identical. The core data is standard, but layout and available columns vary - take a moment to familiarize yourself with your specific platform’s interface.
Practical Tips
- Spend 10-15 minutes simply exploring your broker’s Option chain interface, without placing any trade, until you can quickly locate spot price, ATM strike, and toggle any optional columns (like Greeks or IV) confidently.
- Build a habit of checking at least premium, OI, and Delta together before considering any strike - a richer picture than premium alone.
- Revisit this lesson after completing Modules 10 and 11 - Open Interest, PCR, and Implied Volatility will make even more sense once you’re comfortable navigating the full chain layout.
Practical Exercise
- Open your broker's Option chain for any underlying and expiry. Without placing any trade, identify: the ATM strike, 2 ITM Call strikes, 2 OTM Call strikes, and note their premiums, OI, and (if shown) Delta - all from the same screen.
- Using the same Option chain, pick one strike and write down every piece of information the chain shows for it (premium, OI, volume, IV, any Greeks visible) - then explain, in your own words, what each number tells you, using everything from Modules 5-8.
Mini Quiz
1. What is an Option chain?
An Option chain is a structured table displaying all available strikes for a chosen underlying and expiry, typically with Call (CE) information on one side and Put (PE) information on the other, organized around a central strike price column.
2. In a standard Option chain layout, where is the strike price typically displayed?
Most Option chains use a central strike price column, with Call (CE) data displayed on one side and Put (PE) data on the other - allowing easy side-by-side comparison at each strike.
3. How can you typically identify which strikes are ITM at a glance on most broker platforms?
Most broker Option chain interfaces automatically shade or highlight ITM strikes, making it easy to identify moneyness at a glance without manual calculation, though understanding the underlying concept (Lesson 16) still matters.
4. If you want to gauge which strike has the most current trading activity, which column should you check?
Volume shows how many contracts have traded today; Open Interest shows total outstanding contracts - both together give a strong sense of which strikes are actively traded versus relatively illiquid.
5. Where would you typically look to compare Delta values across multiple strikes at once?
Many broker platforms display Greeks (Delta, Theta, Gamma, Vega) as columns directly within the Option chain, allowing quick side-by-side comparison across multiple strikes without opening each one individually.
6. What is generally the most efficient way to scan an Option chain as a beginner?
Starting near the ATM strike (usually highlighted) and working outward toward ITM or OTM strikes as needed for your specific strategy is a far more efficient scanning approach than reading the entire chain unsystematically.
Frequently Asked Questions
Why does an Option chain show both Calls and Puts together, instead of separately?
Displaying them side by side around the same strike price column makes it easy to directly compare a Call and Put at the identical strike and expiry - useful for spotting relationships (like moneyness flipping between the two, from Lesson 16) and for strategies that combine both (Module 13).
What does "IV" typically refer to as a column in an Option chain?
IV stands for Implied Volatility - the market's current, forward-looking estimate of expected volatility for that specific strike, which directly drives the Vega-related premium levels covered in Lesson 27. We explain Implied Volatility itself in complete depth in Module 11.
Do all brokers display an Option chain in exactly the same format?
The core information (strike, premium, OI, volume) is fairly standard across platforms, but the exact layout, available columns (some show Greeks, some don't by default), and visual styling can differ meaningfully between brokers - the underlying concepts remain the same regardless of the specific interface.
Is a strike with very low Open Interest automatically a "bad" choice?
Not automatically "bad," but it's a signal worth noting - low OI and volume generally suggest lower liquidity, which can mean wider bid-ask spreads and potentially worse execution prices (Lesson 15) - a factor to weigh alongside your actual strategy needs, not an automatic disqualifier.
Can I see historical Option chain data, or only the current live chain?
Most broker apps show the live, current Option chain by default; some platforms and third-party tools also offer historical Option chain snapshots or charts for specific strikes, useful for research, though this varies by provider and isn't universally available.
How often does an Option chain's data update?
During market hours, Option chain data (premium, OI, volume) typically updates in near real-time or with a very short delay, reflecting live trading activity - refresh rates can vary slightly by platform and data source.
What's the practical benefit of understanding an Option chain fully, versus just picking a strike based on gut feeling?
A well-read Option chain lets you compare strikes systematically across price, liquidity, and (if shown) Greeks - turning strike selection from a guess into an informed decision grounded in the concepts from Modules 5-8, directly supporting better trade planning.
Does the Option chain show anything about the underlying's own price?
Yes - most Option chain displays show the underlying's current spot price prominently, often at the top, since it's the essential reference point for judging moneyness (ITM/ATM/OTM) across all the strikes listed below it.
Should I look at the Option chain differently for hedging versus speculation?
The chain itself is the same, but what you're scanning for differs - for hedging (Lesson 20-21), you'd focus on strikes and expiries matching your protection goal; for speculation, you might focus more on Delta, liquidity, and cost relative to your directional conviction.
Is Open Interest the same thing as trading Volume?
No - Volume counts how many contracts have traded today specifically; Open Interest counts the total number of contracts still outstanding (not yet closed or settled), which can span many trading days. Both are useful liquidity signals, but they measure different things - Open Interest is covered in full depth in the next module.
Glossary
Key Takeaways
- An Option chain is a structured table listing all available strikes for a chosen underlying and expiry, with Call (CE) data on one side and Put (PE) data on the other, around a central strike column.
- Standard columns include premium (LTP), bid, ask, volume, Open Interest, and often IV and Greeks (Delta, Theta, Gamma, Vega), depending on the platform.
- Most platforms visually highlight ITM strikes automatically, though understanding moneyness (Lesson 16) remains essential for interpreting what that highlighting means.
- Volume and Open Interest together give a strong sense of a strike's liquidity - important context before placing any order.
- An efficient scanning approach starts near the ATM strike and works outward in either direction, rather than reading the entire chain unsystematically.
- Reading an Option chain fluently brings together every concept from Modules 5-8 - terminology, moneyness, and Greeks - into one unified, practical skill.
Conclusion
The Option chain is where everything from Modules 5 through 8 comes together on a single screen - strikes, premiums, moneyness, liquidity, and Greeks, all displayed side by side for Calls and Puts. Being able to read it fluently is one of the most practically valuable skills this course builds. With that skill now in place, the next module goes deeper into two of the columns you've just learned to read - Open Interest and Put-Call Ratio - powerful tools for gauging market sentiment beyond just price.