I have a feeling that the wide availability of Bitcoin ETFs will herald one of the longest and most stable bull markets for Bitcoin that we have seen to date. I've always invested in BTC using a private wallet but with Fidelity's offering I feel fairly safe and confident putting a portion of my 401k into it. I had to check a few boxes that I accept the risk but other than that Fidelity authorized the transaction.
I assume your pension fund is going to be a very long term investment for you. As I don't know your age I am assuming this. Historically we have seen, Bitcoin has given a very very good return during long term investment. So I am fairly confident that your investment into Bitcoin through your pension fund will give you the highest return compared to all other asset classes.
Also I believe your pension fund is going to be tax free when you will reach your retirement age. If that is the case then you should be in a good position.