Top Analyst Actions: NVDQ, KONA, MRVL, AXTI, TRIP

Novadaq Tech. NVDQ Feltl & Co. raises rating to strong buy from buy

Kona Grill KONA Feltl & Co. raises rating to strong buy from buy

Marvell MRVL Northland Capital raises to outperform from market perform

AXT AXTI Needham raises to buy from hold with $5.50 price target

TripAdvisor TRIP Raymond James raises to market perform from underperform

Merit Medical MMSI Barrington Research lowers rating to market perform from outperform

Activision Blizzard ATVI MKM Partners lowers to neutral from buy, raises price target to $42.00 from $40.00

Gentherm THRM Barrington Research lowers to market perform from outperform

Infinera INFN Northland Capital lowers to market perform from outperform

Encore Wire WIRE Sidoti lowers to neutral from buy, price target to $44.00 from $46.00

Newfield Expl NFX Johnson Rice initiated coverage at buy

Social Reality SCRI ROTH Capital starts at buy

Platform Specialty Products PAH Citigroup starts at buy with $11.00 price target

ContraFect CFRX Piper Jaffray starts at overweight

Super Micro Computer SMCI Pacific Crest starts at sector weight

Fate Therapeutics FATE H.C. Wainwright resumes coverage at buy with $9.00 price target

Stamps.com STMP ROTH Capital resumes at buy

Anthem ANTM Barclays lowers price target to $151.00 from $158.00 with equal-weight rating

NICE NICE Chardan Capital Markets raises to $72.00 from $70.00 with buy rating

Facebook FB FBN Securities raises to $160.00 from $155.00 with outperform rating

CB&I CBI MKM Partners lowers to $42.00 from $46.00 with buy rating

ServiceNow NOW MKM Partners raises to $70.00 from $60.00 with neutral rating