The automatic tax optimization for your Ginmon portfolio makes the best use of your exemption order at the end of the year to maximize your after-tax returns. It checks if there are any unused allowances and whether taxable gains have been generated since the last rebalancing. If that's the case, securities are automatically sold to make the most of your exemption order and then bought back right away to restore your portfolio. However, this optimization can only happen if there are actually value increases and part of your exemption order is still unused.