iShares Silver Trust ( SLV ) is up 1.83% to $41.27. In other energy futures, heating oil was down 0.98% to $3.04 a gallon while natural gas was up 0.79% to $3.04 per million British thermal units. Meanwhile, gold futures finished higher as comments Federal Reserve chairman Ben Bernanke said in comments that there will be no lasting impact from the Standard & Poor's downgrade and that inflation was in check.