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.

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.

On-Stop (O/S) Order

A special-term order placed with the intention of trading at a later date when the price of the stock reaches the specified stop price. An on-stop order becomes a limit order once a trade at the trigger price has occurred.

Normalized Earnings

Profits a company can be expected to achieve taking out cyclical effects and unusual events such as one-time write-offs caused by late product releases, customer bankruptcies and the like. 

Non-Net Order

A special-term order when there is a clear understanding between the buying and selling parties that they will settle the trade directly with each other.

New Listing

A security issue that is newly added to the list of tradable security issues of an exchange. It is accompanied with a new listing date.