 What is the return on the portfolio, from the beginning of 2015, to the end of January 2016?The answer is that there is insufficient data to compute a return, in any currency, without knowing the return for both periods in the same currency.If the return in 2015 was 10% in Singapore dollars, and the Singapore dollar rose by 5% against the US dollar over 2015, then so long as there were no flows in 2015, the return over 2015 in US dollars is