The importance of asset allocation can be best understood with the help of an example. Suppose I invest in the following manner according to my asset allocation plan:
25% or Rs. 25,000 - Large-Cap fund
25% or Rs. 25,000 - Mid-Cap fund
25% or Rs. 25,000 - Small-Cap fund
25% or Rs. 25,000 - Bond fund
Let’s say the different funds had the following rates of return this year:
Year I
+10% - Large-Cap fund
+08% - Mid-Cap fund
+15% - Small-Cap fund
-02% - Bond fund
My portfolio would look like this:
The formula for calculating return for one year is:
Beginning Amount * (1 + the rate of return )
25,000 * 1.10 = 27,500 Large-Cap fund
25,000 * 1.08 = 27,000 Mid-Cap fund
25,000 * 1.15 = 28,750 Small-Cap fund
25,000 * 0.98 = 24,500 Bond fund
Total Portfolio value at end of Year I = 107,750 or a 7.75% rate of return.
Most people would probably want to sell all of their bond fund and put it all in the small-cap fund. That’s human nature. Nobody likes to hold an investment that seems to be losing money. However, suppose the next year, the fund’s returns were like this:
Year II
- 05% - Large-Cap fund
+03% - Mid-Cap fund
- 20% - Small-Cap fund
+05% - Bond fund
At the end of Year II, the portfolio would like this:
27,500 * 0.95 = 26,125 Large-Cap fund
27,000 * 1.03 = 27,810 Mid-Cap fund
53,250 * 0.80 = 42,600 Small-Cap fund
The portfolio would be worth Rs. 96,535 (one year LOSS of 10.41%!)
Finally, had this person stuck with his asset allocation plan and reallocated 25% to each of the 4 funds, he would have had a loss of only 4.25% instead of 10.41%:
26,937 * 0.95 = 25,950 Large-Cap fund
26,937 * 1.03 = 27,810 Mid-Cap fund
26,937 * 0.80 = 21,550 Small-Cap fund
26,937 * 1.05 = 28,284 Bond fund
The portfolio would be worth Rs. 103,170 (one year loss of 4.25% which is MUCH better than the 10.41% loss)