Blind box fund means that the actual positions of some funds deviate greatly from the published positions, while the positions of some A-themed funds are mostly B-themed companies. When people invest in these funds, they often don't know the general investment situation of the funds, and there is a deviation between the estimated value of the funds and the actual net value. Investing in these funds is like opening a blind box.

For example, the position of an educational theme fund is inconsistent with the fund name and fund contract. This kind of "misnomer" can sometimes bring excess returns, and the people are still happy to see it. For example, swarming into the new energy sector this year will bring more benefits to the people than the original theme investment. It is understandable for fund managers to switch positions and exchange shares according to market style.