Benzinga's Top Upgrades, Downgrades For September 12, 2018

B. Riley FBR upgraded Alcoa Corp AA from Neutral to Buy. Alcoa shares rose 0.49 percent to $41.07 in pre-market trading.
Craig-Hallum upgraded Immersion Corporation IMMR from Hold to Buy. Immersion shares fell 2.58 percent to close at $10.20 on Tuesday.
Mizuho upgraded Worldpay Inc WP from Neutral to Buy. Worldpay shares rose 1.04 percent to $99.00 in pre-market trading.
Macquarie upgraded BEST Inc (ADR) BSTI from Neutral to Outperform. BEST shares rose 2.52 percent to $6.51 in pre-market trading.
Buckingham upgraded Copa Holdings, S.A. CPA from Neutral to Buy. Copa shares rose 0.70 percent to $76.75 in pre-market trading.
Northland Securities upgraded DexCom, Inc. DXCM from Underperform to Market Perform. DexCom shares rose 1.23 percent to $148.68 in pre-market trading.
Oppenheimer upgraded Tiffany & Co. TIF from Perform to Outperform. Tiffany shares fell 0.77 percent to close at $123.37 on Tuesday.

Stephens & Co. downgraded Texas Roadhouse Inc TXRH from Overweight to Equal-Weight. Texas Roadhouse shares fell 0.29 percent to close at $73.07 on Tuesday.
Stifel Nicolaus downgraded NXP Semiconductors NV NXPI from Hold to Sell. NXP Semiconductors shares fell 1.47 percent to $88.25 in pre-market trading.
BTIG Research downgraded Snap Inc SNAP from Neutral to Sell. Snap shares fell 4.85 percent to $9.41 in pre-market trading.
Stifel Nicolaus downgraded MACOM Technology Solutions Holdings Inc MTSI from Hold to Sell. MACOM Technology shares dropped 1.21 percent to close at $21.98 on Tuesday.
Stephens & Co. downgraded Del Frisco's Restaurant Group Inc DFRG from Overweight to Equal-Weight. Del Frisco's shares fell 3.17 percent to close at $8.40 on Tuesday.
Goldman Sachs downgraded Lam Research Corporation LRCX from Buy to Neutral. Lam Research shares fell 2.7 percent to $151.20 in pre-market trading.
Stifel Nicolaus downgraded Maxim Integrated Products Inc. MXIM from Buy to Hold Maxim Integrated shares fell 1.72 percent to $59.00 in pre-market trading.
Cowen & Co. downgraded Par Pacific Holdings Inc PARR from Outperform to Market Perform. Par Pacific shares closed at $20.57 on Tuesday.
Goldman Sachs downgraded Micron Technology, Inc. MU from Buy to Neutral. Micron shares fell 4.27 percent to $41.74 in pre-market trading.

BTIG Research initiated coverage on International Money Express Inc IMXI with a Buy rating. The price target for International Money Express is set to $16. International Money Express shares closed at $10.44 on Tuesday.
Roth Capital initiated coverage on Intercept Pharmaceuticals Inc ICPT with a Buy rating. The price target for Intercept Pharmaceuticals is set to $192. Intercept Pharmaceuticals shares closed at $113.78 on Tuesday.
Deutsche Bank initiated coverage on Noah Holdings Limited (ADR) NOAH with a Buy rating. Noah Holdings shares closed at $38.55 on Tuesday.
Buckingham initiated coverage on Huntington Ingalls Industries Inc HII with a Buy rating. The price target for Huntington Ingalls is set to $297. Huntington Ingalls shares closed at $243.76 on Tuesday.