Buffet: “And my widow will not be an expert on stocks. And- I wanna be sure she gets a decent result. She isn't gonna get a sensational result, you know? And since all my Berkshire shares are going-- to philanthropy-- the question becomes what does she do with the cash that's left to her? And I've been-- part of it goes outright, part of it goes to a trustee. But I've told the trustee to put 90% of it in an S&P 500 index fund and 10% in short-term governments.”

Same interview: "Vanguard would be fine, and Berkshire would be fine...I wouldn't want to be touting Berkshire to people generally. I have no problem touting the S&P500, and low cost".

Likely Buffett is still advising 90% S&P500.

I’ve been thinking on this some lately. My trustee (likely my daughter) will also not be an expert on stocks. She could be but likely will not have the time or inclination. It's tricky: situations change, the investing landscape changes, as we have recently witnessed.

I’m thinking to recommend leaving the Berkshire, currently 50%, and putting the rest in Vanguard Total World Stock ETF VT, or equivalent. I know, cap weighted and far from optimal. Advantages are it’s cheap, likely to be around long term, and… it is cap-weighted, it makes no bets on anything in particular, “the entire global stock market in one low-cost package”.

Any thoughts?