Additionally, while the equities were trending lower Friday, currency-hedged ETFs that track foreign markets and diminish the negative effects of a strong USD or weaker foreign currencies were strengthening. For instance, the largest Europe hedged ETFs, the WisdomTree Europe Hedged Equity Fund (NYSEArca: HEDJ) and Deutsche X-Trackers MSCI Europe Hedged Equity ETF (NYSEArca: DBEU), were up 0.4% and 0.3% Friday, respectively. The euro currency depreciated 1.3% against the U.S. dollar to $1.074, its lowest since April.

WisdomTree (NasdaqGS: WETF), which offers a suite of currency-hedged equity ETFs, also jumped 3.9% Friday on the prospect that investors would utilize hedged options when investing overseas.

PowerShares DB U.S. Dollar Index Bullish Fund

For more information on the USD, visit our U.S. dollar category.

Max Chen contributed to this article.