Benzinga's Top Upgrades

Deutsche Bank upgraded Vivint Solar Inc VSLR from Hold to Buy. Vivint Solar shares gained 6.26 percent to $2.80 in pre-market trading. Barclays upgraded NuVasive, Inc. NUVA from Equal-weight to Overweight. The target price for NuVasive has been raised from $58 to $63. NuVasive shares declined 0.89 percent to close at $53.32 on Thursday. Analysts at Cantor Fitzgerald upgraded Synergy Resources Corp SYRG from Hold to Buy. Synergy Resources shares rose 2.04 percent to close at $5.99 on Thursday. Analysts at Stifel Nicolaus upgraded Vanguard Natural Resources, LLC VNR from Equal-weight to Overweight. Vanguard Natural shares fell 3.36 percent to close at $1.44 on Thursday.