Quadrix is a stock rating system that uses over 90 variables in seven major categories to determine the value of a stock. The Quadrix system is produced and maintained by Horizon Publishing Company. The seven major categories are momentum, quality, value, financial strength, earnings estimates, performance, and reversion. The overall score for a particular stock is determined by a weighted average of all 90 variables.

The Quadrix system was developed by Horizon Investment Services’ Chief Investment Officer, Rich Moroney and has been publishing scores for stocks since the year 2000.