If you have ever opened a brokerage platform and tried to trade options for the first time, you have probably seen it — a large table full of numbers, prices, strike levels, and columns you did not recognize. That table is called the options chain, and once you know how to read it, everything about options trading starts to make more sense.
The options chain is not just a list of contracts. It is the options market in real time — showing you exactly what every available contract costs, how actively it is being traded, and what the market expects a stock to do. Learning to read it fluently is one of the most valuable skills you can develop as an options trader.
This guide breaks down the options chain from top to bottom — what each column means, how to navigate it, and how income traders, directional traders, and beginners each use it differently.
Quick Answer
An options chain is a real-time table that shows every available options contract for a specific stock or ETF. It is organized by strike price and displays both call options and put options side by side, along with pricing data, volume, open interest, implied volatility, and the Greeks.
Traders use the options chain to:
- Compare contracts before placing a trade
- Evaluate premium levels and liquidity
- Identify where other traders are most active
- Select the right strike price and expiration date for their strategy
What Is an Options Chain?
An options chain — sometimes called an option table or options board — is a structured display of all available options contracts for a single underlying stock or ETF at a given moment.
Every publicly traded stock with options will have a chain. When you select a stock and navigate to the options section of your brokerage platform, the chain is what you see.
The chain is organized around two variables: strike price and expiration date.
- Strike prices run vertically down the middle of the table
- Expiration dates can be toggled at the top — weekly, monthly, quarterly, or LEAPS
Call options (the right to buy shares) are displayed on the left side of the table. Put options (the right to sell shares) are displayed on the right. The strike prices run down the middle, shared by both sides.
Every row in the table represents a different contract. Same stock, same expiration — but different strike price, different price, different characteristics.
💡 Webull and Tastytrade both display full options chains with real-time data. Tastytrade’s chain is particularly well-designed for evaluating multiple contracts side by side.
How the Options Chain Is Structured
Here is the basic layout of a standard options chain for a stock trading at $100:
CALLS PUTS
Bid Ask Delta IV OI Vol | STRIKE | Bid Ask Delta IV OI Vol
─────────────────────────────────────────────────────────────────────────────────
11.00 11.40 0.82 28% 1,240 380 | $90 | 0.60 0.80 -0.18 26% 820 210
7.20 7.60 0.65 30% 3,560 940 | $95 | 1.10 1.30 -0.35 28% 2,100 580
3.90 4.10 0.50 32% 8,420 2,310 | $100 | 3.80 4.00 -0.50 32% 6,900 1,840
2.00 2.20 0.35 34% 5,180 1,420 | $105 | 6.10 6.40 -0.65 30% 4,200 960
0.85 1.00 0.20 36% 2,960 680 | $110 | 9.80 10.20 -0.80 28% 1,800 420The $100 strike in the middle is the at-the-money (ATM) strike — the closest one to the current stock price. Strikes below $100 are in the money for calls. Strikes above $100 are out of the money for calls. It flips for puts.
Every Column in the Options Chain Explained
Strike Price
The strike is the price at which the option gives you the right to buy (call) or sell (put) 100 shares of the underlying stock. It is fixed for the life of the contract. Strike prices are set at regular intervals — $1, $2.50, $5, or $10 apart depending on the stock’s price range and activity.
Bid Price
The bid is the highest price someone is currently willing to pay to buy the contract. If you are selling an option and want to exit immediately, you will receive approximately the bid price.
Ask Price
The ask is the lowest price someone is currently willing to accept to sell the contract. If you are buying and want to enter immediately, you will pay approximately the ask price.
Bid-Ask Spread
The gap between the bid and the ask. A tight spread (e.g., $3.90 / $4.10) means the contract is liquid and easy to trade. A wide spread (e.g., $1.00 / $2.80) means low liquidity — you are immediately at a disadvantage the moment you enter the trade. Always check the spread before selecting a contract.
Volume
The number of contracts that have traded today. High volume on a specific strike tells you that contract is attracting significant attention. Volume resets to zero each day at market open.
Open Interest (OI)
The total number of outstanding contracts that have not been closed or expired. Unlike volume, open interest builds over time and reflects the total market commitment at a given strike. Large open interest often signals a price level that many traders consider significant.
A useful rule: look for strikes where both volume and open interest are robust. Volume without open interest may be a one-day spike. Open interest with low volume may mean activity has slowed.
Implied Volatility (IV)
Implied volatility measures how much movement the market is pricing into that contract. Higher IV = higher premium, because the market expects a bigger move. Lower IV = cheaper contracts.
IV often spikes before earnings announcements, major economic events, or news catalysts. Traders who sell options for income prefer high IV environments because they can collect larger premiums. Buyers prefer low IV because they pay less for the same contract.
Notice in the table above that IV increases as you move further out of the money — this is called the volatility smile or volatility skew, and it is a real pattern across most options chains.
Delta
Delta measures how much the option’s price moves for every $1 change in the underlying stock. A delta of 0.50 means the option moves $0.50 for every $1 the stock moves.
Delta also doubles as an approximate probability estimate:
- Delta 0.80 → ~80% chance of expiring in the money
- Delta 0.50 → ~50% chance
- Delta 0.20 → ~20% chance
This is one of the most useful numbers in the entire chain. For covered call sellers, delta tells you how likely your strike is to be reached. For buyers, it tells you how much participation you are getting in the stock’s move.
For a deeper dive into how delta affects strike selection, see our guide: How to Pick the Right Strike Price in Options Trading.
How to Navigate the Options Chain Step by Step
Here is how to actually use the chain when you are evaluating a trade:
Step 1 — Select your expiration date At the top of the chain, you will see a dropdown or tabs for different expiration dates. Weekly options expire every Friday. Monthly options typically expire on the third Friday. Start with a monthly expiration 30–45 days out — this is the sweet spot for most strategies.
Step 2 — Find the at-the-money strike Locate the strike closest to the current stock price. This is your anchor. Everything above it is OTM for calls (and ITM for puts). Everything below it is ITM for calls (and OTM for puts).
Step 3 — Scan the bid-ask spread Before looking at any other data, check the spread at your target strike. If the spread is wider than 10–15% of the ask price, consider whether the liquidity is adequate for your trade size.
Step 4 — Check open interest and volume Look for strikes with at least a few hundred contracts of open interest. Avoid strikes where open interest is in the single digits — you may have trouble exiting the position at a fair price.
Step 5 — Look at delta Use delta to confirm the probability profile of your trade. Buying calls? Aim for delta 0.40–0.55. Selling covered calls for income? Aim for delta 0.20–0.30.
Step 6 — Note the implied volatility Is IV elevated or compressed? If IV is high relative to its historical range, options are expensive — good time to sell, expensive time to buy. If IV is low, options are cheap — better for buyers.
How Different Traders Use the Options Chain
Income Traders (Covered Call Sellers)
At Gainsumo, our core focus is using options to generate consistent premium income through covered calls. When evaluating the options chain for an income trade, we look for:
- Strike 5–10% above the current stock price (OTM, delta ~0.20–0.30)
- Premium worth collecting — at least 1–2% of the stock’s value per month
- Adequate open interest — at least a few hundred contracts
- Tight bid-ask spread — to enter and exit efficiently
- Expiration 21–45 days out — the zone where theta decay works hardest in the seller’s favor
For example, if KULR is trading at $3.50, we scan the chain for call options at the $4.00 or $4.50 strike with 30 days to expiration, check the premium and delta, confirm the spread is reasonable, and if everything lines up — we sell.
💡 Tastytrade is purpose-built for this workflow. The platform surfaces delta, IV rank, and probability of profit directly in the chain, making it easy to evaluate covered call candidates without clicking through multiple screens.
Directional Traders (Call and Put Buyers)
Traders buying options to speculate on price movement use the chain to find the contract with the right balance of cost, delta, and expiration.
A directional trader expecting a stock to move from $100 to $115 in the next month might scan the chain for call options with:
- A strike at $105 or $110 (slightly OTM)
- Delta of 0.35–0.45
- 30–45 days until expiration
- Tight bid-ask spread and solid open interest
They avoid the $120 or $130 strikes even though they are cheaper — the probability of a $20–30 move in 30 days on most stocks is low, and the contract would likely expire worthless.
Volatility Traders
Some traders focus entirely on IV rather than direction. They look at the chain to compare implied volatility across strikes and identify mispricings. If one strike has unusually high IV relative to surrounding strikes, it may signal institutional positioning or an upcoming catalyst.
Strategies like straddles and strangles involve buying or selling both calls and puts at the same time — and the chain is where you evaluate the full picture before constructing those trades.
Reading the Chain for Unusual Options Activity
One of the most valuable things traders do with the options chain is scan for unusual options activity — situations where a single strike or expiration date shows a sudden surge in volume relative to open interest.
Signs of unusual activity:
- Volume is 5–10x higher than open interest at a specific strike
- Large block trades appear at a single strike price
- Call or put activity is concentrated heavily at one strike far from the current price
This can sometimes signal that institutional traders or informed participants are making large directional bets. While it is not a perfect signal, unusual options activity is worth noting when it appears.
Common Beginner Mistakes When Reading the Options Chain
#1- Ignoring the bid-ask spread
Many beginners look at the “price” of an option without checking how wide the spread is. A contract showing $2.00 could have a $1.40 bid and a $2.60 ask — meaning you pay $2.60 to buy and receive only $1.40 to sell. That is a built-in loss from the moment you enter.
#2 – Selecting strikes with no open interest
If open interest at your chosen strike is near zero, you may have difficulty finding a buyer when you want to exit. Always check open interest before placing a trade.
#3 – Choosing the cheapest contract without understanding why it is cheap
A $0.20 option on a $150 stock is cheap because it requires an unrealistic move in a short time. Price alone is not a useful filter — use delta and probability to evaluate contracts.
#4 – Confusing bid and ask when entering orders
When buying, you pay the ask. When selling, you receive the bid. Many beginners enter limit orders at the wrong price and wonder why their trade did not fill. Use limit orders between the bid and ask for better execution — most liquid contracts will fill there.
#5 – Reading calls and puts on the wrong side of the chain
Remember: calls are on the left, puts are on the right. The columns flip sides — a delta of 0.65 on the call side and -0.65 on the put side at the same strike are both telling you the same thing about probability. Do not mix them up.
Final Thoughts
The options chain is not a complicated tool once you understand what each column is telling you. It is a real-time snapshot of the options market for a single stock — showing you the price, probability, and activity level of every available contract.
For income traders, the chain is where you find covered call opportunities with attractive premiums and reasonable probability. For directional traders, it is where you pick the strike and expiration that best fits your outlook. For everyone, it is the starting point for every single trade.
Spend time scanning options chains on platforms like Webull before placing your first trade. Get familiar with how bid-ask spreads change across strikes, how delta shifts as you move further from the money, and how IV affects premiums across different expiration dates.
When the chain stops looking like a confusing table and starts looking like useful data, you are ready to trade.
Frequently Asked Questions
What is the difference between an options chain and a stock quote?
A stock quote shows you the current price of one stock. An options chain shows you the prices of every available options contract for that stock across multiple strike prices and expiration dates.
How often does the options chain update?
During market hours, the options chain updates in real time as trades happen and bids and asks change. After market hours, prices are stale and do not reflect accurate values until the next trading session opens.
What does it mean when open interest is very high at one strike?
High open interest at a specific strike means many traders have positions there. It can indicate a level the market considers important — sometimes acting as informal support or resistance for the stock. It also means better liquidity for trading that contract.
Can I access an options chain for free?
Yes. Most brokerage platforms including Webull provide free access to real-time options chains. Some data aggregators like Barchart or MarketWatch also show options chains, though they may have delayed data on free plans.
What is IV rank and why does it matter?
IV rank compares current implied volatility to the stock’s IV range over the past year. An IV rank of 80 means IV is currently higher than it has been 80% of the time — a signal that options are expensive relative to their historical norm. This is useful context when deciding whether to buy or sell options.
How many strike prices are in an options chain?
It varies by stock. Highly liquid stocks like Apple or Tesla may have dozens of strikes at every expiration. Less liquid stocks may have only a handful. The options chain expands as demand for a stock’s options increases.
Gainsumo is a content and education platform. This article is for informational purposes only and does not constitute financial advice. Options trading involves substantial risk of loss.
