Options Glossary: I
Immediate-or-cancel order (IOC)
A type of option order which gives the trading crowd one opportunity to take the other side of the trade. After being announced, the order will be either partially or totally filled with any remaining balance immediately cancelled. An IOC order, which can be considered a type of day order, cannot be used as part of a good-'til-cancelled (GTC) order since it will be cancelled shortly after being entered. The difference between fill-or-kill (FOK) orders and IOC orders is that a IOC order may be partially executed.
Implied volatility
The volatility percentage that produces the 'best fit' for all underlying option prices on that underlying stock. See also Individual volatility.
In-the-money / In-the-money option
A term used to describe an option with intrinsic value. A call option is in-the-money if the stock price is above the strike price. A put option is in-the-money if the stock price is below the strike price.
Index option
An option whose underlying interest is an index. Generally, index options are cash-settled.
Individual volatility
The volatility percentage that justifies an option's price, as opposed to historic or implied volatility. A theoretical option pricing model can be used to generate an option's individual volatility when the five remaining quantifiable factors (Stock price, time until expiration, strike price, interest rates, and cash dividends) are entered along with the price of the option itself.
Institution
A professional investment management company. Typically, this term is used to describe large money managers such as banks, pension funds, mutual funds, and insurance companies.
Iron butterfly
An option strategy with limited risk and limited profit potential that involves both a long (Or short) straddle, and a short (Or long) combination. An iron butterfly contains four options as is an equivalent strategy to a regular butterfly spread which contains only three options. For example, a short iron butterfly might be: buying 1 XYZ May 60 call and 1 May 60 put, and writing 1 XYZ May 65 call and writing 1 XYZ May 55 put.
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