The margin required to secure a new futures or options position.
Initial public offering (IPO)
A company's first sale of stock to the public. Companies making an IPO are seeking outside equity capital and a public market for their stock.
Inside information
Inside information is information of a precise nature which has not been made public, relating, directly or indirectly, to one or more issuers of financial instruments or to one or more financial instruments and which, if it were made public, would be likely to have a significant effect on the prices of those financial instruments or on the price of related derivative financial instruments.
Inside spread (Inside quote)
The difference between the best bid and best ask being quoted among all of the market makers competing in a security. Since the inside spread is the aggregate of individual market maker spreads, it is narrower than an individual dealer spread or quote. (See Market maker)
Insider dealing
The purchase or sale of shares by someone who possesses 'inside' information about the company; ie information on the company's performance and prospects which has not yet been made available to the market as a whole, and which, if available, might affect the share price.
Institutional investor
A bank, mutual fund, pension fund, or other corporate entity that trades securities in large volumes.
Interbank rates
The bid and offer rates at which international banks place deposits with each other.
Intercommodity spread
The purchase of a given delivery month on one futures market and the simultaneous sale of the same delivery month on a different futures market.