The Order to Read an Option Chain In (Most People Read It Backwards)
Price is usually the last thing you should look at
Open a chain for the first time and the eye goes straight to the ask price in the row closest to the current stock price. That's a natural instinct, but it's the wrong order of operations. A price with no context — no sense of how far the strike sits from spot, how wide the spread is, or whether the premium is rich or cheap relative to how the stock actually moves — is just a number. Reading a chain well means gathering that context first, then letting the price confirm or contradict it, rather than anchoring on price and rationalizing the rest.
Step 1: Moneyness — where is this strike relative to spot
Before anything else, place the strike relative to the stock's current price. A strike below spot on a call, or above spot on a put, is in-the-money and carries intrinsic value — it will move close to dollar-for-dollar with the stock. A strike on the other side of spot is out-of-the-money and is pure extrapolation about the future, worth nothing at expiration unless the stock gets there. This single relationship — call it moneyness — sets the entire risk regime of the contract before you've looked at a single other column. It tells you whether you're paying mostly for something the option already has, or mostly for something it might get.
Step 2: The bid-ask spread, before you trust the price
Next, check the gap between bid and ask — not the price itself, the width of that gap relative to the price. A $0.05 spread on a $2.00 option is a 2.5% round-trip cost. A $0.40 spread on that same $2.00 option is a 20% round-trip cost before the trade has moved a single cent in your favor. Wide spreads usually mean thin liquidity: fewer market makers competing for the order, wider theoretical uncertainty being priced in, or both. Skipping this step and going straight to "the option costs $2.00" hides how much of that $2.00 you'll actually get back if you need to exit in a hurry.
Step 3: Implied volatility versus how the stock actually moves
Now look at implied volatility (IV) — but not in isolation. IV on its own is just a number the market is pricing in; it only becomes useful once you compare it against the stock's historical volatility (HV), the realized movement over the last 30, 60, or 90 days. If IV sits well above HV, the market is pricing in more motion than the stock has recently shown — premium tends to run rich, which matters more if you're buying than if you're selling. If IV sits below HV, premium may be running cheap relative to the stock's own recent behavior. This comparison, not the raw IV number, is what tells you whether the price you'd pay is expensive or a bargain.
Step 4: Delta as your directional dial
With moneyness, spread, and IV context in hand, delta tells you how the contract will actually behave if the stock moves. A 0.30 delta call gains roughly $0.30 for every $1.00 the stock rises (and loses roughly that much on a $1.00 drop) — it's a rough, imperfect proxy for the option's directional sensitivity and for the market's implied odds the option finishes in the money. Scanning delta across a row of strikes is a fast way to see how aggressively or conservatively each one is positioned, without doing the math yourself.
Step 5: Open interest and volume, as a gut-check — not a green light
Last, glance at open interest and volume. High open interest with active volume generally supports the tight-spread read from step two; a contract with almost no open interest and zero volume today is a contract you should expect to trade poorly regardless of what its theoretical price looks like. Volume meaningfully exceeding open interest on a given day is also worth a second look — it can mean new positions are being built quickly, which sometimes precedes a wider move than IV alone was pricing in.
Run through moneyness, spread, IV-vs-HV, delta, and OI/volume in that order and the chain stops being a wall of numbers — it becomes five short answers to five specific questions. OptionScope's Option Chain view and Greeks Matrix surface all five side by side, and the glossary is a good place to double-check any term along the way.