Each style of stock has its place in investor portfolios, though weighting may need to change with the economy.

RRGs are used to identify which stocks or sectors are underperforming and outperforming a market index or benchmark. The RRG has four quadrants: leading, weakening, lagging, and improving.

In this video, we break down how to identify undervalued stocks during periods of market volatility. Just because a stock is trending downward doesn't mean it's a bad investment -- sometimes ...