Force Index Study ProphetX Chart Studies - Force Index Study Menu Getting Started Training Online Training Quick Start Videos Industry Knowledge Product Details Content Library DTN Grain Bids DTN FastRack FAQ DTN Refined Fuel Demand Data FAQ DTN Weather Field Descriptions Excel Add-in Field Descriptions Commodity Month Codes Common Symbols Argus Symbols EIA Short Term Energy Outlook EOX Live Symbol Changes OPIS Rack Symbols Total Volume and Open Interest USDA Symbols ProphetX Symbology Notices Notices System Status Release Notes Symbol Search Contact Us Contact Us ProphetX Feedback This is the exponential Moving Average of Force. Force is defined as (Close-Previous)*Volume The default it 13 periods Example of a Chart with a Force Index Study