QUOTE(Junrave @ May 28 2015, 08:39 AM)
The attached link only shows the concept of compounding interest, but it did not exhibit how investing unit trust can be benefited from it. Since the value of unit trust fund is primarily affected by fluctuation of price and unit held for the fund. Lets put it this way, if i bought at rm1.00 per share for RM1000, and the price increase to rm1.20 at next year (earning become RM1200), and drop to rm0.90 at the third year, then the value of fund at the third year will be (price x unit held = RM900. (Correct me if I am wrong). Therefore, I am experiencing loss in this scenario.
But if I got consistent annual return of 10% for example, then it increase NAV yearly and compound interest shall apply in this case, however, since the performance data which figure % pa shown is annualized (fund price could experience 1 year high and 1 year low), then the application of compounding will be ambiguous.
Need sifus to clarify this for me. thanks
Compounding interest or compound interest simply means "interest on interest".
You will get compounded interest when you don't take out the interest, and let it remain together with the principal.
Similarly, you will get CAGR (compound annual growth rate) when you do not take out any growth in the unit trust. (CAGR is also known as the annualized rate.)
When you take out the interest, it is called "simple interest". For example, RM1000 at a consistent 10% p.a. for 10 years, you will get 100% growth, when interest or growth is taken out every year.
But, if the growth is NOT taken out, and if we still get 100% in 10 years, then the annualized rate can be calculated; and it is 7.2% p.a. (Please google the formula on how to calculate the compounded or annualized rate.)
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In your above examples, they have nothing to do with compounding interest or annualized growth; just some examples of random growth rate in each year and how they will affect the investment differently.
What matters, to the investor, is the growth at the end of the invested period. Then the compounding interest or annualized rate can be calculated.
Of course, what happen to the fund at each particular year matters too, as you have shown in your above examples. If the fund goes negative in the current year, it will have to crawl much harder, and at a much higher rate of growth to not only recover the lost, but to also provide a positive growth the following year or years.