Cyclical Stock

A stock of a company in an industry sector that is particularly sensitive to swings in economic conditions.

Open

This is the price at which a security opens for the trading day. A stock can open at the previous closing price, gap up or gap down.

Daily Price Limit

The maximum price advance or decline permitted for a futures contract in one trading session compared to the previous day’s settlement price.

Open Order

An order that remains in the system for more than a day. See Good-Till-Cancelled or Good-Till-Date.

Open-End Investment Fund

An investment fund that continuously offers its securities to investors and stands ready to redeem its securities at all times. Transactions in shares/units of mutual funds are based on their net asset value (NAV), determined at the close of each business day. Examples of an open-end fund are traditional mutual funds and exchange-traded funds (ETFs).

Cross

A trade that occurs when two accounts within the same Participating Organization/Member wish to buy and sell the same security at an agreed price and volume. With some approved exceptions, crosses can only occur within the current bid and ask for the stock.

Odd Lot

A block of stock consisting of less than 100 shares. When odd lots trade, a premium is usually tacked on by the specialist or market maker. These receive the least favorable price and trade last.