What’s the basic rule of successful fund investing? The successful fund investing doesn’t stop with choosing the best funds. Actually it starts from there as the next step—combining the funds into a rational investment plan—is vital too.

Yes, diversify—it’s important for your knowledge, it’s important to grow your business and it’s important to own a bona fide mutual fund portfolio too.

The portfolio should have different kinds of stocks: the large companies to the small companies, rapidly growing companies to undervalued companies and foreign to national. You never know, how unpredictability manipulates the performance divergences.

It’s true that the small companies stocks are riskier but it also performs better. However, over the long run, different types of stock funds produce almost same results. The most logical reason for having some of each category is to balance your portfolio’s ups and downs.

Now, what’s the best possible way to divide your stock money?

First, invest 50% in large-company funds, split the money between funds that invest in growing companies and funds that invest in bargain-priced ones. Then put 25% in foreign funds, and the rest 25% among the small-company funds that invest in value stocks. But never forget to make adjustments, because that’s the way of life and the way of stock business too.