Index ETFs May Not Track Benchmarks as Expected; The Basic Idea: Their Returns Trail by the Amount of Fund Expenses. But That Isn’t the Whole Story
June 6, 2014 Leave a comment
Index ETFs May Not Track Benchmarks as Expected
The Basic Idea: Their Returns Trail by the Amount of Fund Expenses. But That Isn’t the Whole Story.
ARI I. WEINBERG
Updated June 2, 2014 5:21 p.m. ET
The party line on index exchange-traded funds is that they offer easy exposure to a benchmark, less the fund’s expense ratio. If a stock index were to gain 10% this year, for instance, and an index ETF charges 0.1% of fund assets a year in expenses, an investor in that ETF might expect to earn 9.9%.
The reality is messier. The fund’s costs to buy and sell securities, and other aspects of portfolio management, influence your return as well.
For most stock ETFs, this slippage beyond the expense ratio is usually marginal: The median added cost is four-hundredths of a percentage point for ETFs with more than $100 million in assets that invest in U.S. stocks, according to data from research firm ETF.com. Some ETFs even overcome some costs to deliver tighter index-hugging than their expense ratios would indicate.
In other cases, the lag in ETF performance is significantly greater than one might expect based on fund expenses alone. Read more of this post














