I have been seeing astronomical returns from some forum recently. It easily get people attention. That's what it does. But what's matter at the end of the day is how much you truly made at specific time frame. Why I say that is because market goes up and down. And relative performance measures need to account for time frame with reasonable period length to allow for stability.
STI with Dividends from 2009-2016 = 9% annual returns after cost.
Let's take a peak of some period after global financial crisis (GFC) based on STI. Since is reasonable not to choose the bottom. At a height of STI 1900 on May 2009 will be something i am comfortable with. The current STI Index is at 2800. The XIRR ( Annualised returns ) excluding dividends are 5.3%. If we are to include dividends that will be like 8~9%. That's like ......