Cramer: This X factor is ignored in your portfolio By: CNBC.com News March 05, 2015 at 18:13 PM EST While many investors fear that stocks are overvalued right now, Jim Cramer sees one X factor in your portfolio that could change the game. Read More >> Related Stocks: AbbVie Biomarin Pharmaceuticals Costco Wholesale Kroger Co Target Corp Wal-Mart Stores, Inc. Whole Foods Market