National Best Bid and Offer - NBBO

AAA

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.

BREAKING DOWN '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.

RELATED TERMS
  1. Stop-Loss Order

    An order placed with a broker to sell a security when it reaches ...
  2. Order Book

    An electronic list of buy and sell orders for a specific security ...
  3. Market-On-Open Order (MOO)

    An order to buy or sell shares that specifically requests execution ...
  4. Opening Imbalance Only Order (OIO)

    Limit orders that provide liquidity during the opening cross ...
  5. Net Order Imbalance Indicator (NOII)

    Order imbalance information about the opening and closing crosses ...
  6. Imbalance Only Orders (IO)

    Limit orders that provide liquidity during the opening cross ...
Related Articles
  1. Active Trading Fundamentals

    Which Order To Use? Stop-Loss Or Stop-Limit Orders

    Stop-loss and stop-limit orders can provide different types of protection for investors seeking to lock in profits or limit losses. Investors need to know how each type of order works to know ...
  2. Investing Basics

    The Basics Of The Bid-Ask Spread

    The bid-ask spread is essentially a negotiation in progress. To be successful, traders must be willing to take a stand and walk away in the bid-ask process through limit orders.
  3. Active Trading Fundamentals

    The Stop-Loss Order - Make Sure You Use It

    It's a simple but powerful tool to help you implement your stock-investment strategy. Find out how.
  4. Active Trading

    Introduction To Level II Quotes

    Find out what's happening in a given stock with this service showing Nasdaq market makers' best bid and ask prices.
  5. Investing Basics

    What is a Settlement Date?

    A settlement date is the day a security trade must be settled.
  6. Investing Basics

    What's a Price-Taker?

    Price-taker is an economic term describing a market participant who has no effect on overall market activity.
  7. Investing Basics

    What are Class B Shares?

    Class B shares are one classification of common stock issued by corporations.
  8. Brokers

    Broker-Dealer Industry 101: The Landscape

    Independent broker-dealers are a great choice for experienced, self-starter planners who have established practices.
  9. Investing News

    The Brief: Where Is the Bottom?

    Where is the market going today after yesterday's bumpy ride?
  10. Investing

    Finding Value in the Selloff Rubble

    Globally and in the United States, stocks are now in correction mode, with the recent erosion in equities in emerging markets and Europe in a bear market.
RELATED FAQS
  1. Where do penny stocks trade?

    Generally, penny stocks are traded through the use of the Over the Counter Bulletin Board (OTCBB) and through pink sheets. ... Read Full Answer >>
  2. Where can I buy penny stocks?

    Some penny stocks, those using the definition of trading for less than $5 per share, are traded on regular exchanges such ... Read Full Answer >>
  3. How does the stock market react to changes in the Federal Funds Rate?

    The stock market reacts to changes in the federal funds rate in various ways depending on where it is in the business cycle. ... Read Full Answer >>
  4. What are the requirements for being a Public Limited Company?

    The requirements for an entity to be considered a public limited company (PLC) include registration requirements, establishing ... Read Full Answer >>
  5. Is there a difference between financial spread betting and arbitrage?

    Financial spread betting is a type of speculation that involves a highly leveraged derivative product, whereas arbitrage ... Read Full Answer >>
  6. How do I place an order to buy or sell shares?

    It is easy to get started buying and selling stocks, especially with the advancements in online trading since the turn of ... Read Full Answer >>

You May Also Like

Hot Definitions
  1. Stock Market Crash

    A rapid and often unanticipated drop in stock prices. A stock market crash can be the result of major catastrophic events, ...
  2. Financial Crisis

    A situation in which the value of financial institutions or assets drops rapidly. A financial crisis is often associated ...
  3. Election Period

    The period of time during which an investor who owns an extendable or retractable bond must indicate to the issuer whether ...
  4. Shanghai Stock Exchange

    The largest stock exchange in mainland China, the Shanghai Stock Exchange is a nonprofit organization run by the China Securities ...
  5. Dead Cat Bounce

    A temporary recovery from a prolonged decline or bear market, followed by the continuation of the downtrend. A dead cat bounce ...
  6. Bear Market

    A market condition in which the prices of securities are falling, and widespread pessimism causes the negative sentiment ...
Trading Center
×

You are using adblocking software

Want access to all of Investopedia? Add us to your “whitelist”
so you'll never miss a feature!