United States Oil Fund ( USO ), tracking West Texas Intermediate crude oil, added 1.37% to 31.73 as it bounced off of a four-month low. ETFs tracking gasoline prices flared up Friday as futures surged 3.5% on tight supplies in the storm-ravaged Northeast and expectations of the region's slow recovery boosting demand. "Despite today's positive performance, UGA is consolidating the October down move in the form of a 'bear flag' (chart pattern)," said Zev Spiro, CEO and chief market technician at Orips Research in New York.