U.S. stock exchange traded funds (ETFs) closed Wednesday higher as investors awaited corporate earnings season. Equities shrugged off news that Portugal will require assistance from the European Union as its borrowing costs jump.

The SPDR S&P 500 ETF (NYSEArca: SPY) was up 0.3% in late-afternoon trading Wednesday.

An exchange traded note tracking cotton futures was the standout in the commodities sector. [Cotton ETN Bounces At 50-Day Average.]

Natural-gas ETFs were among the largest decliners in Wednesday’s session. [Natural Gas ETFs Decline On Warmer Weather Forecasts.]

Treasury bonds fell sharply Wednesday as investors worried over a potential government shutdown. [Treasury ETFs Pressured As Budget Deadline Looms.]

ETFs tracking industrial metals, meanwhile, moved higher. PowerShares DB Base Metals Fund (NYSEArca: DBB) was up 2.5%. [Copper ETFs Take Point On Metals Charge.]

iShares Barclays 20+ Year Treasury Bond Fund (NYSEArca: TLT)