3.75 Key Research: Macquarie initiates MMI (op), Stifel initiates JPM (hold) & downgrades ARO, Wells downgrades KNX Key Research: Citadel upgrades UTHR & downgrades SVNT, Piper assumes AHII (ow) & TOMO (neutral) Key Research: Piper initiates LH/MWIV/INMD (ow's) & DVA/AMSG/WOOF/DGX (neuts) & PETS (uw)