According to relevant information query, it shows: No.

Rainy days have no effect on Coal Fund Spy.

The reason for the rise and fall of the fund is that the fund is determined by the stock market conditions, which are determined by a series of aspects such as policies, economic conditions, and investor psychology.

The rise and fall of the fund is determined by the rise and fall of the stocks purchased by the fund. When the stocks it holds rise, the fund rises, and vice versa.