Exchange-traded funds have exploded in popularity in recent years, ushering in exponential growth in assets and hundreds of new ETFs to the market. ETFs were touted for their several advantages over traditional index mutual funds, including the flexibility to trade throughout the day, the ability to sell short and buy on margin, and the allure of greater tax efficiencies and generally lower fees. Thus, the debate began over whether ETFs might supplant traditional index mutual funds.
Opinions have come from both sides of the debate. But one voice often carries extra weight, as he's probably the most famous investor in the world.
Buffett weighs in
Last year, Berkshire Hathaway
Now, anytime an investment guru makes a pronouncement, I always hesitate a bit. I think the worst thing you can do in life, and in investing, is to assume that the superstars always get it right. Just because he's Warren Buffett doesn't mean everyone should blindly nod and agree with him. Fools always need to put their own critical-thinking hats on before coming to their own conclusions. However, I think in this case, Buffett is absolutely right.
I have no inherent problem with ETFs -- they were no doubt created in response to an unfulfilled market demand. I think ETFs on their own merits are terrific investments and can provide investors with access to segments of the market that are essential to success. A broad-based ETF like Diamonds
However, the problem arises with how investors actually use some ETFs. Just because these funds can be traded at every minute of the trading day, that doesn't mean you should actually be doing it that often. If buying an ETF leads you to try to be a market timer, then you are fighting a losing battle, my friend. It's been proved many times that individual investors are poor market timers and are much more likely to make the wrong calls than they are to time the market correctly.
Theory vs. real life
But what about those other purported advantages of ETFs, namely tax efficiency and lower fees? Shouldn't those translate into a slight performance advantage over traditional index funds? Well, some research from Morningstar and The Wall Street Journal last year showed that when it comes to real-life returns, ETFs actually performed worse than index mutual funds.
Morningstar looked at several of the biggest and most popular index funds and ETFs in several different categories and found that, almost across the board, the biggest, lowest-cost index funds, such as those offered by Fidelity and Vanguard, outperformed the corresponding ETFs. In fact, the index funds outperformed in 34 of the 40 time periods studied, including all of the one-year, three-year, and 10-year after-tax categories. And this study didn't even take into consideration the commissions ETF investors incurred each time they trade their shares, which means that frequent traders may very likely be digging themselves into a greater hole compared with holders of traditional index funds.
The bottom line
Does this mean that ETFs are not all they're cracked up to be? Well, yes and no. Exchange-traded funds can absolutely serve a purpose in the portfolios of many investors. And given their low costs, they can outperform many traditional actively managed mutual funds.
But when it comes to real-world applications, broad-based ETF returns have lagged low-cost index mutual funds. Admittedly, they don't lag by a wide margin, but even that little bit can add up over time.
If there is a strategic reason for you to own an ETF, by all means do so. But don't assume that just because ETFs are all the rage right now, you're missing out by not owning any. After all, if Warren Buffett thinks that most investors would be better served by sticking to low-fee index mutual funds, maybe we should listen.
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This article was originally published on May 18, 2007. It has been updated by Dan Caplinger, who owns shares of Berkshire Hathaway. Microsoft, Intel, and Berkshire Hathaway are Motley Fool Inside Value recommendations. Berkshire Hathaway is a Motley Fool Stock Advisor selection. The Fool owns shares of Berkshire Hathaway and Intel. Try any of our Foolish newsletters today, free for 30 days. The Fool has a disclosure policy.