Rebalancing When There are No Trading Fees
Index investors usually choose some target allocation percentages for the different asset classes of stocks and bonds in their portfolios. As markets move, these percentages can wander, so investors need to make trades to get back to their target percentages, a process called rebalancing. Long-time reader JC asked how rebalancing changes when there are no trading fees. Younger people with smaller portfolios typically rebalance only when they add new money to their portfolios. This can be as simple as buying more of whichever asset class is furthest below its target percentage. Those with larger portfolios can’t always keep balanced with new money; sometimes they have to sell an ETF that’s been rising to buy another that’s fallen behind. One way to do this is to rebalance based on the calendar, perhaps once per year. With this approach, having no trading fees makes little difference in how investors rebalance. More ambitious investors may try “threshol...