<prompt> Human: Ive seen talks by Vanguard executives, former CEOs, etc. saying that stocks are overvalued and US bonds are a good alternative. Is it just advice to bet the safe option, in order to beat negative returns in the coming years?  <response>: Ive seen talks by Vanguard executives, former CEOs, etc. saying that stocks are overvalued and US bonds are a good alternative.Any links to the sources of this considerable talk?I can almost guarantee you that you either took what they were saying out of context, or they have no idea what they are talking about. People speculate about what the market is going to do all the time. That doesnt mean you should change your investment strategy just because someone that once led a company is doing that speculation.People were saying the same thing last year when the market finally started seeing all time highs again after the market crash. People that sold all their stocks then lost out on some huge gains.Dont worry about who says what about short term market behavior. You are much better off figuring out a long-term strategy and sticking with it. 