About the 4% rule IF one wants to follow Bengen's original paper, then one should (I think) be using large cap domestic stocks and intermediate term Treasuries. (He is clear about intermediate term treasuries but says only "large cap" stocks.)
These days, many allocation funds invest a significant fraction of their equity sleeve abroad. IMHO that's not a bad thing, but it is different. A related "problem" is that allocation funds often invest some money into small cap stocks. While this is different from Bengen's original work, it could be an improvement:
Bill Bengen ...has increased the withdrawal rate he uses on his own retirement portfolio to 4.7%, largely because of the upside he’s gained by adding small and microcap asset classes to his portfolio, he told the Bogleheads Live podcast this week. [Dec 2022]
https://www.fa-mag.com/news/creator-of-4--rule-says-new-withdrawal-target-is-4-7-71026.htmlThat page goes on to say that these days, Bengen says that "the optimum stock allocation that allows the highest withdrawal rate over the long term is between
55% and 60% over the long term."
That suggests that you might look at 60/40 funds, of which there are many. As to what Bengen himself is doing, rather than using his stated static allocation "he uses a third-party service that recommends changes to his asset allocation based on perceived changes in the marketplace."
In short, consider looking at funds closer to 60/40. VBIAX (0.07% ER) is a good starting point if ER is paramount, or VSMGX (0.12% ER) to add foreign exposure.
FWIW, here's a
portfolio visualizer comparison of three 60/40 funds: AOR, VSMGX, and VBIAX. over roughly ten years (PV limitation). Starts with $10K, $400 (4%) annual withdrawal (inflation adjusted).
What allocation do you have to international equities and your favorite funds? "Isn't Intl investing really a currency play on a weaker dollar...which might be in our near future, no?"
Foreign currency weakness / strength against the dollar affects returns but there is more to the story.
S&P 500 companies derive a significant portion of their revenue overseas.
However, some excellent companies are domiciled outside of America.
I would like to own these companies.
Foreign stocks may provide diversification during longer periods
where S&P 500 performance is dismal (e.g., 2000 - 2009).
Of course, diversification works both ways.
Foreign stocks have lagged U.S. stocks for approximately 15 years.
This is an unusually long period and U.S. / foreign stock outperformance tends to run in cycles.