003745 is not an open-end fund, but a securities code. A security code is a series of numbers or letters used to identify a specific stock, fund or other financial instrument. The financial product represented by this code 003745 needs to be identified according to its trading market, issuing company or other relevant information.

Open-end fund refers to a fund whose scale is not fixed, and investors can purchase and redeem it at any time according to the net value of fund shares. Such funds are usually traded outside the stock exchange and purchased and redeemed through fund management companies, banks or other consignment agencies.

If you want to inquire whether a specific fund is an open-end fund, we suggest that you provide the name or code of the fund to provide you with more accurate information.