KWT has a heavy overseas exposure, including China 32.1%, Taiwan 18.5%, Germany 5.4%, France 5.3%, Canada 4.8% and Switzerland 3.3%, along with a 30.5% position in the U.S.

TAN holds a hefty 50.9% tilt toward U.S. Companies, along with Hong Kong 19.8%, China 17.5%, Germany 4.3%, Switzerland 4.0% and Norway 3.5%.

Among their top holdings, KWT and TAN include many prominent names in the space, such as First Solar (NasdaqGS: FSLR), GCL-Poly Energy, XinYi Solar Holdings and SunPower Corp (NasdaqGS: SPWR).

Guggenheim Solar ETF

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Max Chen contributed to this article.