Why is an option bid higher than the ask?
A bid above an ask can reflect a crossed display, stale data, or a mixed quote state. Learn how to verify the same option before drawing a conclusion.
Direct answer
A bid displayed above an ask can be a crossed quote, or a mixed, stale, delayed, non-firm, or indicative screen state. It is not a risk-free executable opportunity. Before treating it as a price, verify that both sides describe the same adjusted option at the same time and then check the current order-entry or confirmation view.
Make sure both sides describe the same option
Compare the underlying, expiration, strike, call or put, and deliverable before comparing prices. An adjusted series can differ from an unadjusted-looking neighbor even when the symbols appear similar in a compact chain. A bid from one series and an ask from another do not form a market, regardless of their order on screen.
Then compare timestamps and session state. A regular-session quote, an opening or closing state, and a quote carried into an inactive period can have different meanings. A screen may also refresh one field before another, so a bid and ask shown together are not necessarily a synchronized pair.
Know why a screen can look crossed
A locked market has a bid equal to the ask; a crossed display has a bid above the ask for the same series at the same moment. Either can be fleeting as messages update, cancel, or are replaced. A screen can also combine delayed and live fields, show a snapshot beside streaming data, or retain a stale side after the opposite side changed.
Look for delay badges, timestamps, entitlement notices, quote-type labels, and any indication that a price is non-firm or indicative. Are option quotes delayed or real time? explains why a visible last price or live-looking underlying does not establish that the option bid and ask are current.
Verify the quote in a fixed sequence
Work through the same checks every time:
- Confirm the same adjusted series, including the deliverable
- Confirm the timestamp and the current market session for both sides
- Check quote type, data entitlement, and any delay, indicative, or non-firm status
- Compare bid and ask prices with their displayed sizes rather than price alone
- Refresh the current order-entry screen and rely on its confirmation or execution report, not the earlier display
This sequence does not guarantee a fill. Quotes and displayed size can change before an order reaches the market, and an order can execute partially, rest, reprice, or be rejected according to its terms and the market's state.
Keep rule questions separate from execution assumptions
For U.S. listed options, OPRA dissemination and the Cboe and Nasdaq rule frameworks provide the relevant context for locked, crossed, firm, and protected quotations. Those rules do not turn a single screenshot into proof that a violation occurred, because the analysis depends on the exact series, event order, quote status, size, condition, and any applicable exception.
A bid above an ask also does not imply that a trade happened, much less that you can capture the apparent difference. The national best bid and offer is a time-sensitive top-of-book reference, and price improvement is possible only when eligible interest is available. Option NBBO and price improvement explains why a displayed spread is not an entitlement to execute at every visible price.
Common questions
Can I buy at the lower ask and immediately sell at the higher bid?
Do not assume so. The two sides may not be current or available at the same time, and their displayed size may be gone before an order arrives. Even when both quotes were valid at a moment, a sequential pair of orders has timing, routing, partial-fill, and market-movement risk.
What is the difference between a locked and crossed option quote?
A locked quote has a bid equal to the ask for the same option series at the same time. A crossed quote has a bid above the ask. Before applying either label, confirm that the contract, timestamp, session, and quote state truly match.
What should I save if the display still looks wrong?
Record the exact series and deliverable, bid and ask prices and sizes, timestamps and time zone, session, venue or feed label, delay or entitlement status, and any order confirmation. Give those details to the broker if you need an audit-trail review; a later screenshot alone may not reconstruct the market state.