Monday's ETF Winners & Losers

On the other hand, the United States Natural Gas (UNG Quote) ETF was the worst decliner, as natural gas slid 68 cents to $6.33 per million British thermal units. The ETF was falling $3.80, or 8.6%, to $40.36.

ETFs tracking crude oil were also lower, as the front-month contract slipped $1.18 to $70.80 a barrel. The downward move came as the projected track of Hurricane Dean was shifted south of the major oil operations in the Gulf of Mexico.

The Ultra Oil & Gas ProShares (DIG Quote) ETF was lower by $1.45, or 1.6%, to $89.35. The iShares Dow Jones U.S. Oil & Gas Exploration Index (IEO Quote) was down 92 cents, or 1.7%, to $53.23. The United States Oil (USO Quote) ETF shed 93 cents, or 1.7%, to $53.10.