Not a stupid question at all. Short answer for your simple scenario is yes it would rebalance. The longer answer is it depends on the output of our optimizatio

Not a stupid question at all. Short answer for your simple scenario is yes it would rebalance. The longer answer is it depends on the output of our optimization engine. Our optimizer tries it's best to make the portfolio better, taking into account drift, trading costs and taxes and potentially holding costs for etfs and a factor model for broad diverse portfolios. Wash sales also play a large part because by default we prevent any wash sales from taking place. These objectives can compete against each other (tax harvesting is generally good but in your example requires selling AMD not buying it). We run an optimization to try and balance these and come up with trades that make the portfolio better. By default we rebalance if the optimizer thinks the portfolio will get better above a threshold we set. We have the ability to rebalance based on naive weight drift as you discussed at the end of your comment - right now it's not enabled by default. We are hoping to add a setting so users can enabled the optimizer to only trade if x number of stocks have drifted more than y%. Please check out this article to learn a bit more: https://help.double.finance/en/articles/9718142-portfolio-optimization https://help.double.finance/en/articles/9718142-portfolio-op...