An options table, also called an options chain, is the grid your brokerage displays for every contract available on a given stock or ETF, and reading it comes down to knowing what each column means and how the numbers relate. Calls sit on one side, puts on the other, strike prices run down the middle, and the surrounding columns tell you what a contract costs, how actively it trades, and how its price will react to moves in the stock, the passage of time, and shifts in volatility. Once you can scan those columns in order, the whole grid stops looking like noise.
How the Grid Is Laid Out
Most platforms split the screen down the middle. Call options sit on the left, put options sit on the right, and strike prices run vertically down the center column. Calls give you the right to buy the underlying stock at the strike; puts give you the right to sell. The mirror layout lets you compare the call and the put at the same strike in a single horizontal glance.
Above the grid you’ll find the ticker symbol and the stock’s current price, usually updated in real time if you have a live-data subscription. Some free accounts show prices on a 15- or 20-minute delay, which matters more than it sounds: a stale quote can make a contract look mispriced when it isn’t. Directly below the header is a row of tabs or a dropdown for selecting an expiration date. Everything in the grid changes based on which expiration you pick, so that’s your first choice.
Picking an Expiration Date
The expiration date is the last day the contract exists. Standard monthly options expire on the third Friday of each month, and those contracts usually carry the highest open interest on most stocks. Weekly options expire every Friday and are typically listed about eight days before expiration. Weeklies aren’t offered on the same Friday a standard monthly contract expires; the monthly takes precedence that week. Some heavily traded names also list Monday and Wednesday expirations, so on certain underlyings options now expire every trading day.
When you select an expiration tab, the entire grid repopulates. Longer-dated contracts (sometimes called LEAPS when they extend a year or more out) tend to have wider bid-ask spreads and lower volume, but they also carry more time value. Shorter-dated contracts react more aggressively to day-to-day stock moves and lose value faster.
Strike Prices and Moneyness
The center column lists strike prices, typically in $1, $2.50, or $5 increments depending on the stock’s price and the listing exchange’s interval program. Lower-priced stocks tend to have $0.50 or $1 strike spacing; higher-priced stocks use $5 or even $10. Exchanges like NYSE Arca and Cboe set these intervals through specific programs approved by the SEC.
Each row is one strike, and the relationship between that strike and the current stock price determines what traders call the contract’s moneyness:
- In the money (ITM): a call is ITM when the strike is below the stock price; a put is ITM when the strike is above the stock price. These contracts have intrinsic value right now.
- Out of the money (OTM): a call is OTM when the strike is above the stock price; a put is OTM when the strike is below. These contracts are entirely time value.
- At the money (ATM): the strike is roughly equal to the current stock price. ATM options tend to have the highest time value and the most trading activity.
Most platforms shade moneyness visually. ITM contracts often appear in green or light gray, OTM contracts are left unshaded or marked in red. That shading is your fastest cue for scanning the chain without doing mental math on every row.
What the Premium Actually Represents
The price of an option, its premium, has two components. Understanding the split tells you whether a contract is expensive or cheap relative to its potential payoff.
Intrinsic value is the portion of the premium that represents exercisable profit right now. For a call, it’s the stock price minus the strike (when positive). For a put, it’s the strike minus the stock price. If a stock trades at $55 and you hold a call with a $50 strike, intrinsic value is $5. An out-of-the-money option has zero intrinsic value.
Time value, sometimes called extrinsic value, is everything above intrinsic value. It reflects the probability that the option could become more valuable before expiration, based on time remaining and how volatile the stock is. That same $50-strike call might trade at $7: $5 intrinsic, $2 time value. As expiration approaches, time value erodes, which is why options are sometimes described as wasting assets.
Premiums are quoted per share, and each standard equity option contract covers 100 shares.1The Options Clearing Corporation. Equity Options Product Specifications A quoted price of $3.20 means the contract costs $320 plus fees.
Bid, Ask, and Last Price
Three price columns form the core of the quote data. The bid is the highest price someone is currently willing to pay for the contract. The ask is the lowest price someone will sell it for. The gap between them is the spread, and it tells you a lot about liquidity. Tight spreads of a few cents signal heavy trading activity. Wide spreads, sometimes $0.50 or more on illiquid contracts, mean you’ll pay a steeper cost just to get in and out.
Some platforms display a mid-price, the simple average of bid and ask, as a rough estimate of fair value. The “last” column shows the price of the most recently executed trade. Be careful with this number on thinly traded contracts: a last-trade price from hours ago may bear little resemblance to where the contract would actually fill right now.
Volume and Open Interest
Two columns track participation, and they measure different things. Volume counts how many contracts of that specific option traded during the current session, and it resets to zero every morning. A volume spike on a particular strike means traders are piling in today, which usually tightens the spread and improves your fill.
Open interest shows how many contracts currently exist as open positions. The Options Clearing Corporation updates this figure daily, so the number you see reflects end-of-day data from the prior session, not live activity.2The Options Clearing Corporation. Daily Open Interest High open interest means a large number of traders hold positions at that strike, which generally signals better liquidity. A contract with 50,000 open interest and 3,000 daily volume is a very different animal from one with 12 open interest and 2 daily volume. The second will almost certainly fill at a worse price.
The Implied Volatility Column
Many chains include an implied volatility column, sometimes labeled “Imp Vol” or “IV.” Expressed as a percentage, it represents the market’s best guess of how much the underlying stock will move over the next year, derived from the option’s current price. An IV of 30% on a $100 stock implies roughly a one-standard-deviation annual range of $70 to $130.
What makes IV useful at a glance: it lets you compare how expensive options are across different stocks and time periods. A $4.00 premium might be cheap on a stock with 80% IV and expensive on one with 15% IV. When IV is high, premiums are inflated across the entire chain, which benefits sellers and hurts buyers. When IV is low, contracts are relatively cheap. Earnings announcements, FDA decisions, and other scheduled events often inflate IV ahead of the date, then cause it to collapse afterward in what traders call an IV crush.
The Greeks
The Greeks are sensitivity metrics that predict how an option’s price will change as market conditions shift. Each one answers a single practical question. Most platforms display them in their own columns, sometimes hidden behind a “Greeks” toggle or a settings menu.
Delta
Delta estimates how much the option’s price moves for each $1 change in the stock. Call deltas run from 0 to 1.00; put deltas run from 0 to −1.00. A call with a delta of 0.50 should gain about $0.50 if the stock rises $1. A put with a delta of −0.40 should gain about $0.40 if the stock drops $1.1The Options Clearing Corporation. Equity Options Product Specifications Deep ITM options have deltas near 1.00 (or −1.00) and move almost dollar-for-dollar with the stock. Far OTM options have deltas near zero and barely react. Traders also use delta as a rough probability estimate: a 0.30 delta call has approximately a 30% chance of expiring in the money.
Gamma
Gamma measures how quickly delta itself changes. If a call has a delta of 0.50 and a gamma of 0.08, a $1 stock move would push the delta to roughly 0.58. Gamma is highest for at-the-money options close to expiration, which is why short-dated ATM positions can swing wildly in the final days. Traders who sell options near expiration are especially exposed to gamma risk, because small stock moves can flip their positions from profitable to deeply negative quickly.
Theta
Theta shows how much value the option loses each day purely from the passage of time. A theta of −0.05 means the premium drops about $0.05 per day, all else being equal. Time decay accelerates as expiration nears, so a contract with 45 days left loses pennies per day, while the same contract with 5 days left might lose dimes. If you buy options, theta works against you. If you sell them, it works for you.
Vega
Vega measures sensitivity to changes in implied volatility. A vega of 0.12 means the option’s price rises about $0.12 if IV increases by one percentage point, and drops $0.12 if IV falls by one point. Longer-dated options have higher vega because there’s more time for volatility expectations to change. This is the Greek that matters most around earnings: you can be right about the stock’s direction and still lose money if IV collapses after the announcement.
Rho
Rho tracks sensitivity to interest rate changes, expressed as the dollar move in premium for each 1% change in the risk-free rate. For short-dated options, rho is negligible. For LEAPS expiring a year or more out, rate shifts can meaningfully affect premiums: calls gain value when rates rise, and puts lose value. In a stable rate environment, most traders ignore it.
Decoding the Options Symbol
Every listed option has a standardized ticker that packs the details into one string. The Options Clearing Corporation convention runs: the underlying ticker padded to six characters, then the expiration date in YYMMDD format, then a single letter for contract type (C for call, P for put), then the strike price multiplied by 1,000 and padded to eight digits. A call on AAPL expiring January 17, 2026 with a $150 strike reads as AAPL 260117C00150000. You rarely type this yourself, but the structure helps when you see an unfamiliar symbol on a trade confirmation or statement.
What Happens After You Place the Trade
Reading the table gets you into a position; expiration is a separate matter worth knowing before you buy. If you hold an option that expires in the money, the OCC will automatically exercise it unless you specifically instruct your broker not to. The auto-exercise threshold is just $0.01 ITM for equity options in customer accounts.3Cboe. OCC Rule Change – Automatic Exercise Thresholds/Expiring Exercise Declarations Even a barely ITM option you forgot about can result in a stock position appearing in your account over the weekend.
If you’ve sold (written) options, assignment can happen any time the market is open, not just at expiration. The OCC randomly assigns exercise notices to clearing members, and your broker allocates them to individual accounts using its own method, often random or first-in, first-out.4The Options Industry Council. Options Assignment You won’t know you’ve been assigned until after the market closes that day. Early assignment risk is highest on deep ITM options, especially right before an ex-dividend date when call holders may exercise early to capture the dividend.