A market maker's price to sell a security or financial instrument. It is a two-way price comprising the bid and ask prices. The difference between the two prices is the spread. For example a dealer may bid for (or offer to buy) shares at $5 and offer to sell them at $5.50 so the bid/offer is $5/$5.50 and the dealer's spread is 50 cents. Offer can also be a synonym for the ask price.

See also: Bid-Ask Quote