The rate at which the gamma of an option or warrant will change in relation to underlying price in the underlying market. More specifically, it is the third order derivative of an options value to price. A high speed value indicates that gamma is more sensitive to moves in price of the underlying asset. Speed is used by investors who utilize both delta-hedging and gamma-hedging option trading strategies, and provides the investor with information on the vega or delta of an option per year (the daily figure can be found by dividing the result by the number of days in the year). As the number of days left on the options contract get smaller and smaller, charm becomes more volatile and less accurate.
Short for standardized portfolio analysis of risk (SPAN). This is a leading margin system, which has been adopted by most options and futures exchanges around the world. SPAN is based on a sophisticated set of algorithms that determine margin according to a global (total portfolio) assessment of the one-day risk for a trader's account. Options and futures writers are required to have a sufficient amount of margin in their accounts to cover potential losses. The SPAN system, through its algorithms, sets the margin of each position to its calculated worst possible one-day move. The system, after calculating the margin of each position, can shift any excess margin on existing positions to new positions or existing positions that are short of margin.
An options or futures investor holding or controlling a single position below the required reporting levels. The reporting level for each option or futures contract is set by the CFTC and individual exchanges.
An investment strategy that attempts to mimic the returns of a certain asset or group of assets by using a combination of different derivatives rather than buying the individual shares in the market. Traders will attempt to profit from the leverage found in options and futures because they can provide the same type of exposure to the underlying asset for a lower cost than if the trader were to buy the underlying assets outright. An example of a stock replacement strategy would be to buy deep in-the-money options. The reason many traders use this strategy is because the delta of deep in-the-money options is close to 1, which means that the option will increase by $1 for every favorable $1 move in the underlying security. Buying in-the-money options allows a trader to have the same type of exposure to a stock for a lower cost than having to buy the shares. However, keep in mind that incorporating leverage creates a new set of risks, so it is a good idea to contact your financial advisor before incorporating a stock replacement strategy into your investment portfolio.
A privilege, sold by one party to another, that gives the buyer the right, but not the obligation, to buy (call) or sell (put) a stock at an agreed-upon price within a certain period or on a specific date. In the U.K., it is known as a "share option". American options can be exercised anytime between the date of purchase and the expiration date. European options may only be redeemed at the expiration date. Most exchange-traded stock options are American.
An acronym standing for "short-term interest rate" options or futures contract. Many companies and financial institutions use STIR contracts to hedge against borrowing or lending exposure.
An investment strategy that mimics the payoff of a call option. A synthetic call is created by purchasing the underlying asset, selling a bond and purchasing a put option. The strike price on the put option is equal to the face value of the bond, which serves as the exercise price of the synthetic call. A synthetic call produces the same overall payoff as a call option. The synthetic call will finish in the money when the price of the underlying asset is greater than the face value of the sold bond at the time of expiration. It will be out-of-the-money when the value of the bond is greater than that of the underlying asset. When the synthetic call is in the money, the profit is the difference between the price of the underlying asset and the face value of the bond. If the call finishes out of the money, the put option absorbs the loss from the underlying asset, with the exercise price of the put paying for the bond.
The option to enter into an interest rate swap. In exchange for an option premium, the buyer gains the right but not the obligation to enter into a specified swap agreement with the issuer on a specified future date. The agreement will specify whether the buyer of the swaption will be a fixed-rate receiver (like a call option on a bond) or a fixed-rate payer (like a put option on a bond).