I have a basic 4 fund approach in my retirement fund. I have been looking into investing in more CD's with the Vanguard account but now am looking at a bond issued by goldman sachs that has a maturity of 02/15/2016 and yield of 3.15%. I am not experienced with bonds but understand they are not FDIC insured. this particular bond has a Moody rating of - and an S and P rating of A-. My question is what are the risks of this type of bond? I would plan on holding until maturity. Does anyone have experience with these and/or opinions on using this as an alternative to a CD of 7 year length?