There are two bits of research that I believe are the best kept secrets in business today. First, according to Boston-based AMR Research, the average total return of companies in AMR's "Supply Chain Top 25" in 2007 (which included companies like Apple, Walmart, IBM, Johnson & Johnson, etc.) was 17.89%, compared with returns of 6.43% for the Dow Jones Industrial Average and 3.53% for companies in Standard & Poor's 500 Index. The second bit of info is from a Georgia Tech study that show supply chain glitches can all but destroy shareholder value. They indicate the total shareholder value loss associated with a glitch can be as high as 25%.