This isn't really true in practice unless such an investor wants to keep working and drastically overshoot their number.Beensabu wrote: ↑Sat Jan 28, 2023 5:53 pmExcept that in this particular case, those who did so several years/decades ago and held fast have benefited from the "overbet" to such an extent that perhaps a few relatively bad years in a row don't do much more than bring them back to where a less lopsided bet would have placed them anyway. They have "bet right" over a period long enough, and with such greater returns than otherwise, that having the bet subsequently turn out to be "wrong" at/for some time in the future would be about the same as having chosen differently at the beginning.PotashDoggerd wrote: ↑Sat Jan 28, 2023 4:38 pm The problem is when you "overbet" in the manner that the 100%-U.S. proponents seem to be suggesting, you expose your portfolio to a much greater volatility/risk of ruin if you find you've "bet wrong" and have a few relatively bad years in a row.
A retiree in 1966 may be cheering about all of the gains he's made and decide "I've saved the number I need to achieve FI and I don't need no stinkin' exUS in my portfolio", now knowing that the next 30 years would be pretty disastrous and fail a standard SWR for a 100% US only investor.
The only people that can look back and not worry about their future 100% equity position are those that are in their 80s and 90s and where it doesn't frankly matter much to them like it does for someone in their 20s through 70s because they've already overcome the hurdle of most of their sequence risk.