of shares US Key Research: • Barc downgrades MTCH, CS initiates PETX/IDXX/NVET/PAHCNVOOF/ZTS (op) & ABAX/PETS (up) • DA Davidson initiates T (buy) & VZ (neut), GS upgrades WHRNV & downgrades WAB ••• Janney initiates SEAS (neut), Opco initiates PSTG (pert), Stifel upgrades ARCB (buy) & cuts SNCR • L