[al_borland]

There are sites like WealthFront. It's designed to act as an automated fund manager, from what I understand. Buying and selling as needed to take advantage of things like tax loss harvesting.

I haven't looked at it in a while, but it was promoted heavily on some podcasts I listened to years ago when it came out.

[ivanvanderbyl]

I don’t live in America so WealthFront and other robo-advisors aren’t available to me

[Rastonbury]

If you're willing to go to a robo just look at the funds/prospectus pages of robofunds, look at the holdings and rebalance every so often as needed