Ultimate Trader supports the creation of spread symbol. Spread Symbols can be used to represent the following:
The difference between the bid and the ask prices of a security or asset.
An options position established by purchasing one option and selling another option of the same class, but of a different series.
The spread for an asset is influenced by a number of factors, such as:
Supply or "float" (the total number of shares outstanding available to trade).
Demand or interest in a stock.
Total trading activity in the stock.
For a stock option, the spread would be the difference between the strike price and the market value.
Formula used to calculate spread:
Factor * Symbol1Price - Symbol2Price + Constant = SPREAD