Today's noteworthy initiations include: Affymetrix (AFFX) initiated with a Buy at Cantor... ArcelorMittal (MT) initiated with a Neutral at JPMorgan... Astronics (ATRO) initiated with a Buy at CL King... Bruker (BRKR) initiated with a Hold at Cantor... C.R. Bard (BCR) initiated with a Sector Weight at KeyBanc... Fluidigm (FLDM) initiated with a Hold at Cantor... Green Brick (GRBK) initiated with a Neutral at Credit Suisse... Illumina (ILMN) initiated with a Buy at Cantor... Information Services (III) initiated with an Outperform at Macquarie... Jaguar Animal Health (JAGX) initiated with a Strong Buy at Feltl... Lincoln National (LNC) initiated with a Buy at Sandler O'Neill... Majesco (MJCO) initiated with a Buy at Maxim... Meridian Bioscience (VIVO) initiated with a Long-Term Buy at Hilliard Lyons... PGT, Inc. (PGTI) initiated with a Buy at Sidoti... Pacific Biosciences (PACB) initiated with a Buy at Cantor... PerkinElmer (PKI) initiated with a Buy at Cantor... Puma Biotechnology (PBYI) initiated with an Overweight at JPMorgan... Qlik Technologies (QLIK) initiated with a Buy at Nomura... Southwestern Energy (SWN) at Wellington Shields... Teladoc (TDOC) initiated with an Outperform at Leerink... ThyssenKrupp (TYEKF) initiated with an Overweight at JPMorgan... Waters (WAT) initiated with a Buy at Cantor... Western Digital (WDC) initiated with an Outperform at Wells Fargo.

New option listings for April 23rd include Express Inc (EXPRQ). Option delistings effective April 23rd include PGT Innovations Inc (PGTI), NGM Biopharmaceuticals Inc (NGM), Karuna Therapeutics Inc (KRTX), KINNATE BIOPHARMA INC (KNTE), Daseke Inc (DSKE), Tritium Dcfc Ltd (DCFC), Xtrackers MSCI All China Equity ETF (CN), CymaBay Therapeutics Inc (CBAY), Alteryx Inc (AYX), XTRACKERS MSCI CHINA A INCLUSION EQUITY ETF (ASHX), Recro Pharma, Inc. (SCTL), Splunk Inc (SPLK), and Textainer Group Holdings Limited (TGH).