Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Stock portfolio value & profit in foreign currency 
It's very simple.  Use USDSGD.  Here's why: Presenting profits/losses in other currencies or denominations can be useful if you want to sketch out the profit/loss you made due to foreign currency exposure but depending on the audience of your app this may sometimes confuse people (like yourself).