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.

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.

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.

Gross Profit

Profit a company makes on goods and services before considering overhead expenses. Gross profit is sales minus cost of sales. 

Message Board

A location on a Web site dedicated to the discussion of a particular topic, usually a single stock or industry sector. Discussions are not real-time. Someone posts a message, and then others respond over a period of hours or days.

Contrarian

Similar to value investor. Looks for stocks with prices beaten down out of proportion to fundamentals.