Benzinga's Top Upgrades By: Benzinga via Benzinga June 15, 2015 at 10:07 AM EDT Analysts at Wunderlich upgraded Vanguard Natural Resources, LLC (NASDAQ: VNR) from Hold to Buy. The price target for Vanguard ... Read More >> Related Stocks: Jabil Circuit Lowe's Companies Petrobras - Petroleo Brasileiro S.A.