National Best Bid and Offer - NBBO

Definition of 'National Best Bid and Offer - NBBO'


The best (lowest) available ask price and the best (highest) available bid price to investors when they buy and sell securities. National Best Bid and Offer is the bid and ask price the average person will see. The Securities and Exchange Commission’s Regulation NMS requires that brokers must guarantee customers this price.

Investopedia explains 'National Best Bid and Offer - NBBO'


The NBBO is updated throughout the day to show the highest and lowest offers for a security among all exchanges and market makers. The lowest ask price and the highest bid price displayed in the NBBO do not have to come from the same exchange. The best bid and ask prices from a single exchange or market maker are simply called “best bid and offer.” Traders who want to execute orders larger than those available through the NBBO will want to know the other potential bid and ask prices at which they could execute their orders. They can find these in an exchange or market maker’s “depth of book” data. Day traders usually use level 2 market-maker screens to see all the bids and offers for a particular stock.

The Consolidated Quotation System gives the NBBO for securities listed on the New York Stock Exchange, while the Unlisted Trading Privileges Quote Data Feed gives the NBBO for securities listed on the Nasdaq. A shortcoming of the NBBO system is that the data may not be sufficiently up to date, so investors may not get the prices they were anticipating when their trades are actually executed. This problem is mainly of concern to high-frequency traders, whose trading strategies may fail if their orders aren’t executed at a precise desired price. Another NBBO shortcoming is that Regulation NMS is difficult to enforce, because the fast pace of trading and the lack of recorded NBBO prices make it difficult to prove whether an investor received the NBBO price on a trade.



comments powered by Disqus
Hot Definitions
  1. XW

    A symbol used to signify that a security is trading ex-warrant. XW is one of many alphabetic qualifiers that act as a shorthand to tell investors key information about a specific security in a stock quote. These qualifiers should not be confused with ticker symbols, some of which, like qualifiers, are just one or two letters.
  2. Quanto Swap

    A swap with varying combinations of interest rate, currency and equity swap features, where payments are based on the movement of two different countries' interest rates. This is also referred to as a differential or "diff" swap.
  3. Genuine Progress Indicator - GPI

    A metric used to measure the economic growth of a country. It is often considered as a replacement to the more well known gross domestic product (GDP) economic indicator. The GPI indicator takes everything the GDP uses into account, but also adds other figures that represent the cost of the negative effects related to economic activity (such as the cost of crime, cost of ozone depletion and cost of resource depletion, among others).
  4. Accelerated Share Repurchase - ASR

    A specific method by which corporations can repurchase outstanding shares of their stock. The accelerated share repurchase (ASR) is usually accomplished by the corporation purchasing shares of its stock from an investment bank. The investment bank borrows the shares from clients or share lenders and sells them to the company.
  5. Microeconomic Pricing Model

    A model of the way prices are set within a market for a given good. According to this model, prices are set based on the balance of supply and demand in the market. In general, profit incentives are said to resemble an "invisible hand" that guides competing participants to an equilibrium price. The demand curve in this model is determined by consumers attempting to maximize their utility, given their budget.
  6. Centralized Market

    A financial market structure that consists of having all orders routed to one central exchange with no other competing market. The quoted prices of the various securities listed on the exchange represent the only price that is available to investors seeking to buy or sell the specific asset.
Trading Center