Pioneer Investment Management Inc Buys Linde PLC, Amazon.com Inc, Progressive Corp, Sells Pfizer Inc, State Street Corporation, Johnson & Johnson

Boston, MA, based Investment company Pioneer Investment Management Inc buys Linde PLC, Amazon.com Inc, Progressive Corp, Royal Dutch Shell PLC, Elanco Animal Health Inc, Lam Research Corp, Abiomed Inc, UBS Group AG, Omnicom Group Inc, Quest Diagnostics Inc, The Walt Disney Co, NetApp Inc, SVB Financial Group, H&R Block Inc, PVH Corp, NVIDIA Corp, Novo Nordisk A/S, Arista Networks Inc, Citrix Systems Inc, DXC Technology Co, FedEx Corp, McCormick Inc, Tiffany, The Interpublic Group of Inc, Berkshire Hathaway Inc, CNH Industrial NV, Hess Corp, Barrick Gold Corp, BlackRock Inc, Deere, International Paper Co, ResMed Inc, Tableau Software Inc, GrubHub Inc, Sabre Corp, Keysight Technologies Inc, Advance Auto Parts Inc, Aflac Inc, Digital Realty Trust Inc, Fastenal Co, IDEXX Laboratories Inc, Illumina Inc, Intuit Inc, Sun Communities Inc, Tyson Foods Inc, The Western Union Co, Palo Alto Networks Inc, Berry Global Group Inc, Autohome Inc, CDK Global Inc, Talend SA, AXA Equitable Holdings Inc, American Financial Group Inc, Aqua America Inc, BHP Group, CMS Energy Corp, Euronet Worldwide Inc, Federal Realty Investment Trust, Incyte Corp, Kimco Realty Corp, Lowe's Inc, MKS Instruments Inc, Mohawk Industries Inc, Regions Financial Corp, SBA Communications Corp, SJW Group, Vertex Pharmaceuticals Inc, Williams Inc, Franco-Nevada Corp, Charter Communications Inc, General Motors Co, VEREIT Inc, Fortune Brands Home & Security Inc, Capri Holdings, Pentair PLC, Diamondback Energy Inc, 58.com Inc, Tallgrass Energy LP, Apple Hospitality REIT Inc, Reata Pharmaceuticals Inc, Gardner Denver Holdings Inc, Elastic NV, Moderna Inc, A.O. Smith Corp, Sarepta Therapeutics Inc, Affiliated Managers Group Inc, Anglogold Ashanti, Annaly Capital Management Inc, Arthur J. Gallagher, Autodesk Inc, Avery Dennison Corp, BCE Inc, Bausch Health Inc, Brown & Brown Inc, CF Industries Holdings Inc, Cadence Design Systems Inc, Canadian Natural Resources, Cincinnati Financial Corp, National Retail Properties Inc, Buenaventura Mining Co Inc, Consolidated Edison Inc, CoreCivic Inc, DTE Energy Co, Eagle Materials Inc, Encana Corp, Enbridge Inc, Erie Indemnity Co, Exelixis Inc, PacWest Bancorp, Foot Locker Inc, Garmin, Global Payments Inc, Gold Fields, Hersha Hospitality Trust, Hospitality Properties Trust, IHS Markit, II-VI Inc, Jack Henry & Associates Inc, Juniper Networks Inc, Kronos Worldwide Inc, Lindsay Corp, Maximus Inc, Molina Healthcare Inc, NiSource Inc, Nokia Oyj, Nuance Communications Inc, Open Text Corp, PPL Corp, Pan American Silver Corp, Pinnacle West Capital Corp, Realty Income Corp, WRKCo Inc, Royal Caribbean Cruises, STMicroelectronics NV, TELUS Corp, Tempur Sealy International Inc, Torchmark Corp, Trex Co Inc, UDR Inc, Valmont Industries Inc, WellCare Health Plans Inc, Evergy Inc, Whirlpool Corp, Xcel Energy Inc, Yamana Gold Inc, Zebra Technologies Corp, TransDigm Group Inc, Mueller Water Products,, Cardiovascular Systems Inc, First Solar Inc, CVR Energy Inc, AGNC Investment Corp, Discovery Inc, First American Financial Corp, KKR Inc, Apollo Global Management LLC, RLJ Lodging Trust, Dunkin' Brands Group Inc, Post Holdings Inc, Proto Labs Inc, Spirit Realty Capital Inc, Qualys Inc, MPLX LP, YY Inc, Agios Pharmaceuticals Inc, Criteo SA, Allegion PLC, Ally Financial Inc, Parsley Energy Inc, Sage Therapeutics Inc, SolarEdge Technologies Inc, GoDaddy Inc, Glaukos Corp, SPX FLOW Inc, First Data Corp, Match Group Inc, Acacia Communications Inc, Acushnet Holdings Corp, Invitation Homes Inc, Canada Goose Holdings Inc, Janus Henderson Group PLC, Evoqua Water Technologies Corp, Americold Realty Trust, Cactus Inc, Crescent Acquisition Corp, Bloom Energy Corp, Upwork Inc, Graf Industrial Corp, Schultze Special Purpose Acquisition Corp, Tencent Music Entertainment Group, Dell Technologies Inc, Acamar Partners Acquisition Corp, Hennessy Capital Acquisition Corp IV, Fox Corp, Alleghany Corp, Antares Pharma Inc, BancFirst Corp, Itau Unibanco Holding SA, Barnes Group Inc, CNOOC, Cabot Microelectronics Corp, Cal-Maine Foods Inc, Career Education Corp, Cerus Corp, Cheesecake Factory Inc, Cimarex Energy Co, Cirrus Logic Inc, Coeur Mining Inc, Cohen & Steers Inc, Vale SA, Conmed Corp, Cypress Semiconductor Corp, Dentsply Sirona Inc, DaVita Inc, Deckers Outdoor Corp, Deluxe Corp, Discovery Inc, Dr Reddy's Laboratories, Ebix Inc, Eldorado Gold Corp, Ennis Inc, Telefonaktiebolaget L M Ericsson, Finisar Corp, First Merchants Corp, Tegna Inc, Brookfield Property REIT Inc, Gol Intelligent Airlines Inc, Golar LNG, Gulfport Energy Corp, Haverty Furniture Inc, Hawaiian Holdings Inc, Heartland Financial USA Inc, HollyFrontier Corp, ICICI Bank, Iamgold Corp, Infosys, Integra Lifesciences Holdings Corp, Investors Real Estate Trust, Jack In The Box Inc, Jefferies Financial Group Inc, Magellan Health Inc, Magna International Inc, Marine Products Corp, Medifast Inc, Myriad Genetics Inc, Hope Bancorp Inc, Navigators Group Inc, Nelnet Inc, Northwest Bancshares Inc, NorthWestern Corp, ASGN Inc, PT Telekomunikasi Indonesia (Persero) Tbk, Pacific Premier Bancorp Inc, Papa John's International Inc, Patterson Inc, Perrigo Co PLC, PetMed Express Inc, Progress Software Corp, Raven Industries Inc, RenaissanceRe Holdings, Repligen Corp, BlackBerry, Ritchie Bros Auctioneers Inc, Rollins Inc, S&T Bancorp Inc, SLM Corp, Scholastic Corp, Silgan Holdings Inc, SSR Mining Inc, Simmons First National Corp, Sinclair Broadcast Group Inc, Strategic Education Inc, Taubman Centers Inc, Teleflex Inc, The Toro Co, Umpqua Holdings Corp, United Community Banks Inc, United Community Financial Corp, United Natural Foods Inc, Universal Forest Products Inc, Valley National Bancorp, Viasat Inc, Vornado Realty Trust, WR Berkley Corp, Westinghouse Air Brake Technologies Corp, Westamerica Bancorp, Kratos Defense & Security Solutions Inc, Wolverine World Wide Inc, OPKO Health Inc, Brown-Forman Corp, Towne Bank, Teck Resources, Hanesbrands Inc, Douglas Emmett Inc, Allegiant Travel Co, Central Garden & Pet Co, Mellanox Technologies, Interactive Brokers Group Inc, VMware Inc, MercadoLibre Inc, American Public Education Inc, K12 Inc, B2Gold Corp, Vermilion Energy Inc, BioTelemetry Inc, Keurig Dr Pepper Inc, Office Properties Income Trust, CIT Group Inc, Daqo New Energy Corp, Ironwood Pharmaceuticals Inc, Zogenix Inc, American Assets Trust Inc, Adecoagro SA, Pacira BioSciences Inc, Cornerstone OnDemand Inc, Andeavor Logistics LP, Sandstorm Gold, The Stars Group Inc, Pretium Resources Inc, Ubiquiti Networks Inc, Bright Horizons Family Solutions Inc, Gladstone Land Corp, New Residential Investment Corp, HD Supply Holdings Inc, Mallinckrodt PLC, Sprouts Farmers Market Inc, Acceleron Pharma Inc, Wix.com, Chegg Inc, Houghton Mifflin Harcourt Co, Varonis Systems Inc, TPG Specialty Lending Inc, Navient Corp, Aurora Cannabis Inc, Liberty Formula One Group, CyberArk Software, Liberty Broadband Corp, Nevro Corp, PRA Health Sciences Inc, Momo Inc, Qorvo Inc, Etsy Inc, Clearway Energy Inc, Sunrun Inc, Lumentum Holdings Inc, MyoKardia Inc, NorthStar Realty Europe Corp, Instructure Inc, Avangrid Inc, Cronos Group Inc, Versum Materials Inc, Valvoline Inc, Vistra Energy Corp, Mammoth Energy Services Inc, iRhythm Technologies Inc, Liberty Expedia Holdings Inc, Innovative Industrial Properties Inc, AnaptysBio Inc, Laureate Education Inc, Cadence Bancorp, Altice USA Inc, American Finance Trust Inc, Baker Hughes, a GE Co, Redfin Corp, CarGurus Inc, Sogou Inc, Jianpu Technology Inc, Industrial Logistics Properties Trust, Zscaler Inc, Spotify Technology SA, HUYA Inc, Pluralsight Inc, Perspecta Inc, Allakos Inc, Tenable Holdings Inc, Arlo Technologies Inc, KLX Energy Services Holdings Inc, Garrett Motion Inc, SVMK Inc, EdtechX Holdings Acquisition Corp, Livent Corp, StoneCo, Equitrans Midstream Corp, Fox Corp, Lyft Inc, Levi Strauss, iShares Russell 1000 Growth, Vanguard Growth, sells Pfizer Inc, State Street Corporation, Johnson & Johnson, UnitedHealth Group Inc, PayPal Holdings Inc, Total SA, Accenture PLC, Eli Lilly and Co, Laboratory Corp of America Holdings, American Electric Power Co Inc, Cognizant Technology Solutions Corp, Colgate-Palmolive Co, Ecolab Inc, Exxon Mobil Corp, Facebook Inc, CVS Health Corp, Cabot Oil & Gas Corp, Union Pacific Corp, Amgen Inc, United Rentals Inc, Texas Instruments Inc, Boeing Co, Micron Technology Inc, DuPont de Nemours Inc, DuPont de Nemours Inc, Analog Devices Inc, Biogen Inc, Monster Beverage Corp, The Kroger Co, Yum Brands Inc, The Mosaic Co, Humana Inc, Netflix Inc, Twitter Inc, Baidu Inc, Centene Corp, Kansas City Southern, Vail Resorts Inc, eBay Inc, TE Connectivity, Coca-Cola European Partners PLC, Hologic Inc, Nike Inc, Taiwan Semiconductor Manufacturing Co, Target Corp, The Ultimate Software Group Inc, Fox Corp, TD Ameritrade Holding Corp, Ball Corp, Bank of Nova Scotia, BorgWarner Inc, Brunswick Corp, Carlisle Inc, Crown Castle International Corp, Edison International, The Estee Lauder Inc, Fidelity National Financial Inc, Halliburton Co, Huntington Bancshares Inc, KeyCorp, Live Nation Entertainment Inc, Manulife Financial Corp, Mettler-Toledo International Inc, PulteGroup Inc, Schlumberger, The Toronto-Dominion Bank, Xerox Corp, Sociedad Quimica Y Minera De Chile SA, ServiceNow Inc, Yum China Holdings Inc, Air Products & Chemicals Inc, Alaska Air Group Inc, Amdocs, Anadarko Petroleum Corp, Ansys Inc, Aon PLC, Avnet Inc, Brookfield Asset Management Inc, Brown-Forman Corp, CarMax Inc, Cathay General Bancorp, CenterPoint Energy Inc, CenturyLink Inc, Cerner Corp, Dover Corp, Exact Sciences Corp, Macy's Inc, Genuine Parts Co, GlaxoSmithKline PLC, Hasbro Inc, John Wiley & Sons Inc, LKQ Corp, Las Vegas Sands Corp, Marathon Oil Corp, Marriott International Inc, Microchip Technology Inc, Moody's Corporation, Nektar Therapeutics Inc, Newfield Exploration Co, Fox Corp, Eversource Energy, NuVasive Inc, ON Semiconductor Corp, Old Dominion Freight Lines Inc, PG&E Corp, Qualcomm Inc, Radian Group Inc, XPO Logistics Inc, Southern Copper Corp, Thor Industries Inc, Trimble Inc, United Continental Holdings Inc, Universal Display Corp, Universal Health Services Inc, Weyerhaeuser Co, Zions Bancorp NA, Chipotle Mexican Grill Inc, Spirit AeroSystems Holdings Inc, Mirati Therapeutics Inc, Envestnet Inc, Ellie Mae Inc, EPAM Systems Inc, PBF Energy Inc, Portola Pharmaceuticals Inc, Gaming and Leisure Properties Inc, Inogen Inc, Synchrony Financial, Loxo Oncology Inc, Wayfair Inc, Zayo Group Holdings Inc, Syneos Health Inc, Hortonworks Inc, Shopify Inc, Park Hotels & Resorts Inc, National Vision Holdings Inc, iQIYI Inc, 1st Source Corp, AGCO Corp, AMERISAFE Inc, AVX Corp, Accelerate Diagnostics Inc, American International Group Inc, Andersons Inc, Anworth Mortgage Asset Corp, Argan Inc, ARRIS International PLC, Assurant Inc, ATN International Inc, AutoNation Inc, Avista Corp, Axis Capital Holdings, ANI Pharmaceuticals Inc, Bruker Corp, CBL & Associates Properties Inc, CEVA Inc, CSG Systems International Inc, Callaway Golf Co, Campbell Soup Co, Charles River Laboratories International Inc, China Petroleum & Chemical Corp, Chunghwa Telecom Co, Churchill Downs Inc, Columbia Banking System Inc, Companhia De Saneamento Basico Do Estado De Sao Pa, CNX Resources Corp, Ingredion Inc, Covanta Holding Corp, Crown Holdings Inc, LivaNova PLC, Adtalem Global Education Inc, Dean Foods Co, Dick's Sporting Goods Inc, Dillard's Inc, The E W Scripps Co, Endo International PLC, Ensco Rowan PLC, EQT Corp, FLIR Systems Inc, First Busey Corp, First Industrial Realty Trust Inc, Flowers Foods Inc, Fluor Corp, Franklin Electric Co Inc, Franklin Resources Inc, GameStop Corp, Gerdau SA, Goodyear Tire & Rubber Co, HDFC Bank, Equity Commonwealth, Encompass Health Corp, Hecla Mining Co, Heico Corp, Henry Schein Inc, Hydrogenics Corp, Integrated Device Technology Inc, InterContinental Hotels Group PLC, Kearny Financial Corp, Kemet Corp, Kennametal Inc, LTC Properties Inc, Lamar Advertising Co, Lazard, Loral Spacemmunications Inc, Luminex Corp, MFA Financial Inc, McGrath RentCorp, Mercer International Inc, Murphy Oil Corp, New York Community Bancorp Inc, Geospace Technologies Corp, OceanFirst Financial Corp, Old Republic International Corp, Omega Healthcare Investors Inc, Omnicell Inc, One Liberty Properties Inc, Orbotech, People's United Financial Inc, Polaris Industries Inc, PotlatchDeltic Corp, RPC Inc, Range Resources Corp, Raymond James Financial Inc, Rio Tinto PLC, Robert Half International Inc, Sealed Air Corp, Shire PLC, Signature Bank, Life Storage Inc, Stericycle Inc, SunPower Corp, Sykes Enterprises Inc, Tata Motors, Telefonica Brasil SA, Texas Roadhouse Inc, Textron Inc, The GEO Group Inc, The Timken Co, W.P. Carey Inc, Waddell & Reed Financial Inc, Waterstone Financial Inc, West Pharmaceutical Services Inc, Avino Silver & Gold Mines, Fortis Inc, NeoGenomics Inc, Banco Macro SA, Blackrock Floating Rate Inc Stra Fd Inc, First Trust Senior Floating Rate Income Fund II, Eaton Vance Floating-rate Income Trust, Qurate Retail Inc, Wyndham Destinations Inc, Canadian Solar Inc, Oritani Financial Corp, Broadridge Financial Solutions Inc, Continental Resources Inc, TriMas Corp, Beneficial Bancorp Inc, Fanhua Inc, Crescent Point Energy Corp, Hollysys Automation Technologies, Fortuna Silver Mines Inc, Select Medical Holdings Corp, Pampa Energia SA, KAR Auction Services Inc, Chesapeake Lodging Trust, Cooper-Standard Holdings Inc, Targa Resources Corp, First Republic Bank, Preferred Apartment Communities Inc, Boingo Wireless Inc, Pandora Media Inc, Groupon Inc, Tahoe Resources Inc, Horizon Therapeutics PLC, Zynga Inc, Puma Biotechnology Inc, Retail Properties of America Inc, Tesaro Inc, GCI Liberty Inc, Artisan Partners Asset Management Inc, Hannon Armstrong Sustainable Infrastructure Capita, Voya Financial Inc, Armada Hoffler Properties Inc, News Corp, Physicians Realty Trust, American Homes 4 Rent, Independence Realty Trust Inc, Applied Optoelectronics Inc, Antero Resources Corp, Marcus & Millichap Inc, Braemar Hotels & Resorts Inc, Eagle Pharmaceuticals Inc, Farmland Partners Inc, TrueCar Inc, The Michaels Inc, Intersect ENT Inc, Eldorado Resorts Inc, BrightSphere Investment Group PLC, Invitae Corp, Kornit Digital, Uniti Group Inc, Adaptimmune Therapeutics PLC, Black Knight Inc, Evolent Health Inc, Liberty Latin America, Gannett Co Inc, Natera Inc, WAVE Life Sciences, Editas Medicine Inc, Hutchison China Meditech, MGM Growth Properties LLC, Liberty SiriusXM Group, Liberty SiriusXM Group, Audentes Therapeutics Inc, Medpace Holdings Inc, MedEquities Realty Trust Inc, Extraction Oil & Gas Inc, Clipper Realty Inc, Presidio Inc, Micro Focus International PLC, OptiNose Inc, Nexa Resources SA, Loma Negra Cia Industria Argentina SA, Delphi Technologies PLC, Dropbox Inc, nVent Electric PLC, Apergy Corp, Evelo Biosciences Inc, Spirit MTA REIT, Wyndham Hotels & Resorts Inc, Tricida Inc, Cushman & Wakefield PLC, Resideo Technologies Inc, Covetrus Inc during the 3-months ended 2019Q1, according to the most recent filings of the investment company, Pioneer Investment Management Inc. As of 2019Q1, Pioneer Investment Management Inc owns 1561 stocks with a total value of $70.7 billion. These are the details of the buys and sells.

For the details of Pioneer Investments's stock buys and sells, go to https://www.gurufocus.com/guru/pioneer+investments/current-portfolio/portfolio

These are the top 5 holdings of Pioneer Investments
  1. Microsoft Corp (MSFT) - 20,050,890 shares, 3.34% of the total portfolio. Shares reduced by 17.98%
  2. Apple Inc (AAPL) - 10,155,585 shares, 2.73% of the total portfolio. Shares added by 4.26%
  3. Amazon.com Inc (AMZN) - 687,487 shares, 1.73% of the total portfolio. Shares added by 20.38%
  4. PepsiCo Inc (PEP) - 8,793,402 shares, 1.52% of the total portfolio. Shares reduced by 15.05%
  5. The Home Depot Inc (HD) - 5,473,637 shares, 1.49% of the total portfolio. Shares reduced by 13.41%
New Purchase: Novo Nordisk A/S (NVO)

Pioneer Investment Management Inc initiated holding in Novo Nordisk A/S. The purchase prices were between $46.07 and $52.63, with an estimated average price of $49.1. The stock is now traded at around $51.19. The impact to a portfolio due to this purchase was 0.07%. The holding were 937,462 shares as of .

New Purchase: Talend SA (TLND)

Pioneer Investment Management Inc initiated holding in Talend SA. The purchase prices were between $35.76 and $51.21, with an estimated average price of $42.58. The stock is now traded at around $37.50. The impact to a portfolio due to this purchase was 0.03%. The holding were 474,064 shares as of .

New Purchase: Tallgrass Energy LP (TGE)

Pioneer Investment Management Inc initiated holding in Tallgrass Energy LP. The purchase prices were between $22.63 and $25.23, with an estimated average price of $23.71. The stock is now traded at around $20.30. The impact to a portfolio due to this purchase was 0.02%. The holding were 460,616 shares as of .

New Purchase: Gardner Denver Holdings Inc (GDI)

Pioneer Investment Management Inc initiated holding in Gardner Denver Holdings Inc. The purchase prices were between $20.45 and $28.2, with an estimated average price of $25.07. The stock is now traded at around $34.00. The impact to a portfolio due to this purchase was 0.02%. The holding were 535,009 shares as of .

New Purchase: Moderna Inc (MRNA)

Pioneer Investment Management Inc initiated holding in Moderna Inc. The purchase prices were between $14.45 and $23.7, with an estimated average price of $18.52. The stock is now traded at around $14.00. The impact to a portfolio due to this purchase was 0.02%. The holding were 739,148 shares as of .

New Purchase: Reata Pharmaceuticals Inc (RETA)

Pioneer Investment Management Inc initiated holding in Reata Pharmaceuticals Inc. The purchase prices were between $51.9 and $101.79, with an estimated average price of $82.55. The stock is now traded at around $86.09. The impact to a portfolio due to this purchase was 0.02%. The holding were 134,105 shares as of .

Added: Linde PLC (LIN)

Pioneer Investment Management Inc added to a holding in Linde PLC by 33491.87%. The purchase prices were between $152.29 and $176.63, with an estimated average price of $165.92. The stock is now traded at around $203.19. The impact to a portfolio due to this purchase was 1.22%. The holding were 4,907,437 shares as of .

Added: Amazon.com Inc (AMZN)

Pioneer Investment Management Inc added to a holding in Amazon.com Inc by 20.38%. The purchase prices were between $1500.28 and $1819.26, with an estimated average price of $1661.42. The stock is now traded at around $1880.00. The impact to a portfolio due to this purchase was 0.29%. The holding were 687,487 shares as of .

Added: Progressive Corp (PGR)

Pioneer Investment Management Inc added to a holding in Progressive Corp by 106.05%. The purchase prices were between $58.23 and $73.61, with an estimated average price of $68.37. The stock is now traded at around $79.82. The impact to a portfolio due to this purchase was 0.27%. The holding were 5,112,626 shares as of .

Added: Royal Dutch Shell PLC (RDS.A)

Pioneer Investment Management Inc added to a holding in Royal Dutch Shell PLC by 491.93%. The purchase prices were between $58.27 and $64.48, with an estimated average price of $61.77. The stock is now traded at around $65.88. The impact to a portfolio due to this purchase was 0.23%. The holding were 3,215,223 shares as of .

Added: Elanco Animal Health Inc (ELAN)

Pioneer Investment Management Inc added to a holding in Elanco Animal Health Inc by 88.63%. The purchase prices were between $29 and $32.83, with an estimated average price of $30.78. The stock is now traded at around $34.68. The impact to a portfolio due to this purchase was 0.23%. The holding were 10,878,124 shares as of .

Added: Lam Research Corp (LRCX)

Pioneer Investment Management Inc added to a holding in Lam Research Corp by 562.97%. The purchase prices were between $131.63 and $183.8, with an estimated average price of $166.29. The stock is now traded at around $176.06. The impact to a portfolio due to this purchase was 0.22%. The holding were 1,043,217 shares as of .

Sold Out: Fox Corp (FOXA)

Pioneer Investment Management Inc sold out a holding in Fox Corp. The sale prices were between $34.63 and $49.69, with an estimated average price of $36.46.

Sold Out: Envestnet Inc (ENV)

Pioneer Investment Management Inc sold out a holding in Envestnet Inc. The sale prices were between $47.14 and $66.67, with an estimated average price of $57.36.

Sold Out: GlaxoSmithKline PLC (GSK)

Pioneer Investment Management Inc sold out a holding in GlaxoSmithKline PLC. The sale prices were between $37.83 and $41.87, with an estimated average price of $39.95.

Sold Out: Fox Cor