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Look up the meaning of hundreds of trading terms in our comprehensive glossary.

  • Bank for International Settlements
    The Bank for International Settlements (BIS) is a global financial institution owned by central banks. Based in Basel, Switzerland, there are representative offices in Hong Kong and Mexico City.

    The BIS's original members were Switzerland, Germany, Belgium, France, Britain, Italy, the United States and Japan.
  • Bank of China
    The Bank of China is one of China's four largest state-owned commercial banks. It is a subsidiary of the People’s Bank of China. However, it maintains close relations in management, administration, and cooperation in several areas with the subsidiary.
  • Bank of England
    The Bank of England (BoE) is the central bank for the United Kingdom, acting as the government's bank and lender of last resort. With headquarters in the City of London, it issues currency and oversees monetary policy. It is the UK equivalent of the Federal Reserve in the United States.
  • Bar chart
    A type of chart which consists of four significant points: the high and the low prices, which form the vertical bar; the opening price, which is marked with a horizontal line to the left of the bar; and the closing price, which is marked with a horizontal line to the right of the bar.
  • Barrier level
    A certain price of great importance included in the structure of a barrier option. If a barrier level price is reached, the terms of a specific barrier option call for a series of events to occur.
  • Barrier option
    Any number of different option structures (such as knock-in, knock-out, no touch, double-no-touch-DNT) that attaches great importance to a specific price trading. In a no-touch barrier, a large defined pay-out is awarded to the buyer of the option by the seller if the strike price is not 'touched' before expiry. This creates an incentive for the option seller to drive prices through the strike level and creates an incentive for the option buyer to defend the strike level.
  • Base rate
    The base rate, or base interest rate, is the interest rate that a central bank – like the Bank of England or Federal Reserve – will charge to lend money to commercial banks. Adjusting the base rate helps a central bank regulate the economy by encouraging or discouraging spending as required.
  • Basing
    A chart pattern used in technical analysis that shows when demand and supply of a product are almost equal. It results in a narrow trading range and the merging of support and resistance levels.
  • Basis point
    Basis points, also known as bps (pronounced ‘bips’), describe the percentage change in the value of financial instruments or the rate change in an index or other benchmark. Basis points mostly refer to changes in interest rates and bond yields. One basis point is equivalent to 0.01%.
  • Bear market
    A bear market is any market that experiences a fall of around 20% or more from its recent high. Most commonly applied to stock markets, the term can also be used for anything that is traded, including currencies and commodities. A bear market is the opposite of a bull market.
  • Bid price
    Bid price, or simply bid, describes what a buyer is willing to pay for a security. It is contrasted with the ask price, the amount a seller is willing to sell a security for. The difference between the two is known as the ‘spread’, which is the cost traders pay to open and close positions.
  • Bid/Ask spread
    The difference between the bid and the ask (offer) price.
  • Black box
    The term used for systematic, model-based or technical traders.
  • Bollinger Bands
    A tool used by technical analysts that consists of a band plotted two standard deviations on either side of a simple moving average. It is used to find support and resistance levels.
  • Bonds
    A bond is a fixed-income investment that represents a loan made by an investor to a borrower (who is typically corporate or governmental). It can be illustrated as an I.O.U. between the lender and borrower that includes the details of the loan and its payments.
  • Broker
    A financial broker is a third-party coordinating the sale of financial securities between parties selling securities and those purchasing them. Brokers are individuals or firms acting as intermediaries between investors and trading exchanges.

    Exchanges only accept orders from their members, either individuals or firms. Therefore, traders and investors require exchange members' services to make financial transactions. Brokers get compensated for their services in several ways; commissions, fees or paid directly by the exchange.
  • Buck
    The word buck is a slang term for one US dollar. The word’s use traces back to 1748, forty-four years before the first US dollar became minted.
  • Bull market
    A bull market describes any market in which prices are rising or are expected to rise imminently. Typically applied to stock markets, the term can also be used for anything that is traded, including currencies and commodities. A bull market is the opposite of a bear market.
  • Buy
    Taking a long position on a product.
  • Buy dips
    ‘Buy the dips’ is a phrase used in trading, referring to opening a trade on a market as soon as it experiences a short-term price fall. ‘The dip’ is quite literally a dip shown on a market’s chart when its price falls after a bullish period.