Host: How much can this technique boost a portfolio s returns?

David Marotto: Because the difference between expense ratios of the lowest cost exchange traded funds and the mutual funds can be almost of 4%. It can boost you re return by a percent a year. Now, a percent a year is huge, that amount will allow you to double your stocks every seven years instead of every eight or nine years to double your stock in investment portfolio.

So, a percent is worth a lot.