A fallacy of our times which will not last.
Ah those ETF funds..
At the risk of repeating here, yet one more time, something all contributing members must be familiar with regarding the explosive growth of ETF funds. These by some measures now make up over 50% of total trading on many exchanges.
ETF funds, abbreviation for "Exchange Traded Funds", just mirror a stock exchange's benchmark index. Its more or less a promises to do as well as the index they state they follow at the outset. Its grown hugely over the years, now the numbers show these dominate over 57% of all major stock exchanges. (See link below). In Thailand we have some similar, called "trigger funds", these automatically sell/buy whenever the computer triggers "something". It is why there often is such mkt. volatility and why too often stop- losses don't work anymore, as the trigger funds trigger it lower by indiscriminate selling (or buying) not good old fashion analysis, checking, or perception.
This is also why a Thai (or any) stock can suddenly drop with no good reason or change in the company's fundamentals. It so also gives individual investors which pay attention and have information an advantage. And why its silly that not more sign up at thaistocks.com :). Of course individual stock picking and managing one's portfolio of that is not for everybody. Some don't have the temperament, some don't have the time -nor interest. Too often to their peril as over the years it adds up in lost returns.
ETF's, nothing more or less is barely a guarantee to average performance. If the index drops, so will the price of the unit in an ETF. These have become hugely popular as it allows more and more analyst to just skip company visits/analysis and just advocate to join the index following; claiming of course few if any can beat the index of the longer term.
They got some ammunition of late as in the US most mutual funds and hedge funds have lagged the continued rising US market indexes; it has surprised so many on the upside for years. Since 2009 the US market has risen I recall some 23% per year on average. So if you were in anyway cautious, you got left behind. When the US market turns south, I bet these active managers will beat the ETF's because these often err on the conservative side and have some cash on hand, of course I am generalizing. Hence the claim that recently ETF's have beaten most all others is a one side statement of the current abnormal times.
To learn more and as supporting article take a look at this recent Forbes Article:
http://www.forbes.com/sites/baldwin/2015/01/21/is-vanguard-too-successful/