In Berkshire Hathaway's 2013 annual letter to shareholders, Warren Buffett gave some retirement savings advice to investors. The Oracle of Omaha wrote in his letter to shareholders that he had given the trustee designated to manage the bequest his wife will receive, the following advice:
[buffett]
“What I advise here is essentially identical to certain instructions I’ve laid out in my will. One bequest provides that cash will be delivered to a trustee for my wife’s benefit … My advice to the trustee could not be more simple: Put 10% of the cash in short-term government bonds and 90% in a very low-cost S&P 500 index fund. (I suggest Vanguard’s.) I believe the trust’s long-term results from this policy...

