The ask (or offer) is the lowest price that sellers are currently demanding for an asset. It is the top of the sell side of the order book. If you want to buy immediately, the ask is the price you pay.
How it works
Sellers compete by offering lower, so the ask continuously updates to the cheapest standing sell order. It rises when sellers withdraw or demand more, and falls when selling pressure builds.
An immediate buy order matches against the ask first. If its quantity is smaller than your order, the remainder fills at higher ask levels, lifting your average entry price.
Why it matters
Paying the ask sets the first hurdle for the trade: the market must move in your favor by more than the spread before the position shows real profit.
The ask is the other half of the quote pair. Watching it while intending to sell — or the bid while intending to buy — is one of the most common beginner mismatches.
A simple market example
A stock shows Bid 99.90 / Ask 100.10. A market buy for 100 shares costs about 10,010. If only 60 shares sit at 100.10 and the next tier is 100.15, the remaining 40 fill higher and the average entry lands above 100.10.
Common mistakes
Assuming the displayed ask covers any order size. Quotes carry limited quantity; larger orders sweep several tiers.
Judging entry cost from the last traded price. The ask is what sellers demand now; the last trade is already history.
Frequently asked questions
Is the ask the same as the market price I see in the news?
Headline quotes usually reference the last traded price. The ask is the live price for buying now and is typically at or above it.
Why does the ask jump right after news?
Sellers re-price for uncertainty: some cancel, others demand a wider premium. The cheapest standing offer moves up accordingly.
Can I avoid paying the ask?
Only by not demanding immediate execution — a limit order can wait for a better price, with the risk that it never fills.
Educational content only. Definitions describe common market usage and may vary by jurisdiction, instrument, or institution.