basic calculation such as interest rate compounding and the concept of present value and future value..

have not went for interview but got similar experience with other asset management companies. Basically the role is to analyse and interpret financial data. Hence you need to know how basic investment stuff such as Price Earnings ratio, dividend yield, earnings per share growth and macro indicators such as GDP etc. Also maybe test on question such as if you have 50k, how long will it take to grow to 200k if the rate of return is 3% p.a. You have ample time because it is either you know or don't know the questions.

do some homework then, you can google the investment terms. Least of all, you must find out what is shares or unit trust as this what the department does.