Investor/RT allows the user to create Custom Instruments which reflect some arithmetic combination of other instruments. The feature can be used for tracking the spread between two instruments or tracking the value of a basket of Securities, a Portfolio or a Mutual Fund.
Investor/RT allows the user to setup user-defined instruments which are defined as:
Yes. The file may be either a comma- or tab-separated text or csv file. The first line of the file is important and will tell Investor/RT that the following lines should be considered pairs or spreads (custom instruments). The first line should look like this:
/TYPE PAIR
The first line may also be used to tell Investor/RT that you would like to use division on the pairs instead of subtraction. The line above will default to subtraction, however, the line below:
Custom Symbols - Advancers / Decliners
This video discusses how to create custom symbols that track various statistics for large lists of symbols, such as advancers/decliners, adv/dec volume, up ticks, up tick volume, on SP500, NQ100, or any custom list of symbols (quotepage).