US stocks open flat; Data, Yellen eyed By: CNBC.com News February 25, 2015 at 09:30 AM EST U.S. stocks opened flat, as investors looked at housing data and digested Yellen's dovish comments on Tuesday ahead of her second testimony. Read More >> Related Stocks: Autodesk Avago Technologies Campbell Soup Dollar Tree Herbalife Ltd L Brands Ross Stores Salesforce Sentinelone Inc Cl A Splunk Inc Target Corp Transocean Ltd Willis Towers Watson Public Ltd