By Gary Gordon of ETF Expert
NEW YORK (
) -- Prior to 2000, a strong dollar was often synonymous with a strong U.S. economy. Over the last decade, however, greenback strength has often signified a fear of riskier assets (e.g., stocks, commodities, emerging market currencies, etc.).
In 2010, the correlation between stocks and dollars only intensified. When the dollar trended lower, riskier stock assets flourished ... and when the dollar moved higher, stocks limped their way toward the closing bell.
There are other reasons for the "coupling," however. Commodities are priced in the world's reserve currency. It follows that miners/explorers/materials companies may generate larger profit margins when it takes more dollars to pay for "stuff." Consequently, materials-heavy
iShares Emerging Markets
had a -.78 correlation coefficient to
PowerShares Dollar Bullish
Another reason for the ongoing marriage in 2010 has been the lack of faith in the euro. With the year-long sovereign debt crisis emulating the subprime disaster, every European Union hiccup has destabilized the euro (reinforced the buck.) Not surprisingly, then, the
iShares Europe 350 Index
has a startling -.90 coefficient with UUP.
(Note: Remember that correlation coefficients travel between 1.0 and -1.0 such that .70, .80, .90, positive or negative, is deemed exceptionally strong. In contrast, .20, .30, .40, positive or negative, is deemed modest.)
On the flip side, the dollar's effect on U.S. stock assets may be waning. PowerShares Dollar Bullish correlated at .54 with the
S&P 500 SPDR Trust
and .61 with the
Dow Jones Diamond Trust
. Married? Perhaps... but not quite joined at the hips.
So here's the kicker. Which stock asset classification has had the most casual, least significant relationship with the buck? U.S. micro-caps. Here's how micro-cap stock ETFs --
First Trust MicroCap
-- performed on the year, alongside their correlation coefficients with PowerShares Dollar Bullish.
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