Quantitative process in brief

Quantitative strategies, on the other hand, involve analytical judgment at the design stage, but they replace the ongoing reliance on human judgment with systematic/ mathematical processes, often based on computer programs that analyse available market data extensively. 

These systematic processes search for assets and market characteristics and patterns with predictive elements so that assets can be identified which that will earn superior returns. Once a pattern or relationship has been established by analysis of past data, a model is used to predict expected returns of assets going forward. From a quantitative perspective, investment success depends not on individual company insights but on the quality of the model used and how much appropriate statistical information is available.