The main reason is the huge decline in the stock market. Partial stock funds invest in the stock market, which is greatly influenced by the stock market. This kind of fund can be said to be just a collection of stocks. When the stock market fell as a whole, none of these funds were spared, so they followed the stock market down.
Therefore, most of these funds do not have an independent market. You can basically know the performance of these funds when you look at the stock market.