Depends on the scale. For vanguard, it’s a lot of work. For a financial advisor, the software to rebalance runs in a web browser on a laptop (heck, even an iPa

Depends on the scale. For vanguard, it’s a lot of work. For a financial advisor, the software to rebalance runs in a web browser on a laptop (heck, even an iPad!). Rebalancing has been figured out and automated very well for a few years now, with several different vendors all competing.