Funds without a Unit Price

Hi All,

I live in Hong Kong and we have a Mandatory Provident Fund, which is a retirement fund that all employees must contribute to. The way this works is that I contribute a set amount every month and it gets invested into a mix of “funds”.
The problem I am facing is that there is no Unit Cost or number of Units that I can track over the months. I can look at amount invested and the current value.
What would be the best way of tracking this on Sharesight?