Glossary
Backspread
A delta-neutral spread composed of more long options than short options on the same underlying instrument. This position generally profits from a large movement in either direction in the underlying instrument.
Balance of Trade
The value of a country's exports minus its imports.
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 little horizontal line to the left of the bar, and the closing price, which is marked with a little horizontal line of the right of the bar.
Base Currency
The first currency in a Currency Pair. It shows how much the base currency is worth as measured against the second currency. For example, if the USD/CHF rate equals 1.6215 then one USD is worth CHF 1.6215. In the FX markets, the US Dollar is normally considered the 'base' currency for quotes, meaning that quotes are expressed as a unit of $1 USD per the other currency quoted in the pair. The primary exceptions to this rule are the British Pound (GBP), the Euro(EUR) and the Australian Dollar (AUD).
Bear Market
A market condition in which the prices of securities are falling, and widespread pessimism causes the negative sentiment to be self-sustaining. As investors anticipate losses in a bear market and selling continues, pessimism only grows. Although figures can vary, for many, a downturn of 20% or more in multiple broad market indexes, such as the Dow Jones Industrial Average (DJIA) or Standard & Poor's 500 Index (S&P 500), over at least a two-month period, is considered an entry into a bear market.
Bear (or bearish) spread
One of a variety of strategies involving two or more options (or options combined with a position in the underlying stock) that can potentially profit from a fall in the price of the underlying stock.
Bear spread (call)
The simultaneous writing of one call option with a lower strike price and the purchase of another call option with a higher strike price. Example: writing 1 XYZ May 60 call, and buying 1 XYZ May 65 call.
Bear spread (put)
The simultaneous purchase of one put option with a higher strike price and the writing of another put option with a lower strike price. Example: buying 1 XYZ May 60 put, and writing 1 XYZ May 55 put.
Bearish
An adjective describing the opinion that a stock, or a market in general, will decline in price -- a negative or pessimistic outlook.
Beta
A measure of how closely the movement of an individual stock tracks the movement of the entire stock market.
Bid / Bid Price
The price at which a buyer is willing to buy an option or a stock. In any quote, it is shown on the left side of the quotation. For example, in the quote USD/CHF 1.4527/32, the bid price is 1.4527; meaning you can sell one US dollar for 1.4527 Swiss francs.
Black-Scholes formula
The first widely-used model for option pricing. This formula can be used to calculate a theoretical value for an option using current stock prices, expected dividends, the option's strike price, expected interest rates, time to expiration and expected stock volatility. While the Black-Scholes model does not perfectly describe real-world options markets, it is still often used in the valuation and trading of options.
Bid/Ask Spread
The difference between the bid and offer price.
Big Figure
The first two or three digits of a foreign exchange price or rate. Examples: If the USD/JPY bid/ask is 115.27/32, the big figure is 115. On a EUR/USD price of 1.2855/58 the big figure is 1.28. The big figure is often omitted in dealer quotes. The EUR/USD price of 1.2855/58 would be verbally quoted as "55/58".
Book
In a professional trading environment, a 'book' is the summary of a trader's or desk's total positions.
BOX
Boston Options Exchange Group L.L.C.
Box spread
A four-sided option spread that involves a long call and a short put at one strike price as well as a short call and a long put at another strike price. Example: buying 1 XYZ May 60 call, and writing 1 XYZ May 65 call; simultaneously buying 1 XYZ May 65 put, and writing 1 May 60 put.
Break-even point(s)
The stock price(s) at which an option strategy results in neither a profit nor a loss. While a strategy's break-even point(s) are normally stated as of the option's expiration date, a theoretical option pricing model can be used to determine the strategy's break-even point(s) for other dates as well.
An individual or firm that acts as an intermediary, putting together buyers and sellers for a fee or commission. In contrast, a 'dealer' commits capital and takes one side of a position, hoping to earn a spread (profit) by closing out the position in a subsequent trade with another party.
Bretton Woods Agreement of 1944
An agreement that established fixed foreign exchange rates for major currencies, provided for central bank intervention in the currency markets, and pegged the price of gold at US $35 per ounce. The agreement lasted until 1971, when President Nixon overturned the Bretton Woods agreement and established a floating exchange rate for the major currencies.
British Retail Consortium (BRC) Shop Price Index
Measures the rate of inflation at various surveyed retailers. This index only looks at price changes in goods purchased in retail outlets.
Bull Market
A market distinguished by rising prices.
Bull (or bullish) spread
One of a variety of strategies involving two or more options (or options combined with an underlying stock position) that may potentially profit from a rise in the price of the underlying stock.
Bull spread (call)
The simultaneous purchase of one call option with a lower strike price and the writing of another call option with a higher strike price. Example: buying 1 XYZ May 60 call, and writing 1 XYZ May 65 call.
Bull spread (put)
The simultaneous writing of one put option with a higher strike price and the purchase of another put option with a lower strike price. Example: writing 1 XYZ May 60 put, and buying 1 XYZ May 55 put.
Bullish
An adjective describing the opinion that a stock, or the market in general, will rise in price -- a positive or optimistic outlook.
Bundesbank
Germany's Central Bank. This is the U.S equivalent of the Federal Reserve.
Butterfly spread
A strategy involving three strike prices that has both limited risk and limited profit potential. A long call butterfly is established by: buying one call at the lowest strike price, writing two calls at the middle strike price, and buying one call at the highest strike price. A long put butterfly is established by: buying one put at the highest strike price, writing two puts at the middle strike price, and buying one put at the lowest strike price. For example, a long call butterfly might be: buying 1 XYZ May 55 call, writing 2 XYZ May 60 calls and buying 1 XYZ May 65 call.
Buy-write
A covered call position in which stock is purchased and an equivalent number of calls written at the same time. This position may be transacted as a combined order, with both sides (buying stock and writing calls) being executed simultaneously. Example: buying 500 shares XYZ stock, and writing 5 XYZ May 60 calls. See also Covered call / covered call writing.