Simply put, enhancement = a small amount of active management ≠ a certain performance will increase.
For example, when a fund manager passively tracks the index, 90% of the positions "copy the index", and the remaining 10% selects stocks through certain stock selection logic, striving to earn more money than the index on the premise of basically tracking the index. This is a typical index-enhanced fund.
Of course, specific product analysis is needed to enhance the operation of the fund. Therefore, although index-enhanced funds adhere to the investment strategy of "passive investment is the main investment, supplemented by active investment", they will test the active management ability of fund managers more than ordinary index funds.
If it is well managed, it can achieve the excess income beyond the index and achieve the "enhancement" effect; If the management is not good, it can only fluctuate with the index, or it may not reach the normal income of the index, or it may have a "weakening" effect.
Well, I hope my answer can help you. If you have any other questions, you can continue to ask them.