I have no clue why the stock hasn't moved. In the last five years, a LOT of stocks haven't moved, right?
Here is WMT vs Costco
http://www.google.com/search?oi=stock&q=stocks:SFY&prev=/search%3Fq%3DSFY%26hl%3Den%26lr%3D
Not exactly a rining endorsement for shareholders. Yes, many stocks havent moved, but those are mostly compaies with little or now growth, WMT has had growth, yet its stock is standing still.