0001085146-17-000444.txt : 20170210 0001085146-17-000444.hdr.sgml : 20170210 20170210142243 ACCESSION NUMBER: 0001085146-17-000444 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20161231 FILED AS OF DATE: 20170210 DATE AS OF CHANGE: 20170210 EFFECTIVENESS DATE: 20170210 FILER: COMPANY DATA: COMPANY CONFORMED NAME: WESTFIELD CAPITAL MANAGEMENT CO LP CENTRAL INDEX KEY: 0001177719 IRS NUMBER: 800175963 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-10220 FILM NUMBER: 17592180 BUSINESS ADDRESS: STREET 1: ONE FINANCIAL CENTER STREET 2: 23RD FLOOR CITY: BOSTON STATE: MA ZIP: 02111 BUSINESS PHONE: 6174287100 MAIL ADDRESS: STREET 1: ONE FINANCIAL CENTER STREET 2: 23RD FLOOR CITY: BOSTON STATE: MA ZIP: 02111 FORMER COMPANY: FORMER CONFORMED NAME: WESTFIELD CAPITAL MANAGEMENT CO LLC DATE OF NAME CHANGE: 20020717 13F-HR 1 primary_doc.xml 13F-HR LIVE false false false 0001177719 XXXXXXXX 12-31-2016 12-31-2016 WESTFIELD CAPITAL MANAGEMENT CO LP
ONE FINANCIAL CENTER 23RD FLOOR BOSTON MA 02111
13F HOLDINGS REPORT 028-10220 N
Brandi McMahon Compliance Officer 617 428-7100 /s/ Brandi McMahon Boston MA 02-10-2017 0 253 11405054 false
INFORMATION TABLE 2 form13fInfoTable.xml DESCRIPTION FOR INFORMATION TABLE 3M COCOM88579Y1015803250SHSOLE 325000ABBOTT LABSCOM0028241001203153132392SHSOLE 26412320491160ACCELERON PHARMA INCCOM00434H108319611252409SHSOLE 8117570440652ACLARIS THERAPEUTICS INCCOM00461U10512165448215SHSOLE 2474950200720ACUSHNET HOLDINGS CORPCOM005098108216181096795SHSOLE 5956850501110ADOBE SYS INCCOM00724F10160236585098SHSOLE 4711810113917AFFILIATED MANAGERS GROUPCOM0082521087725310SHSOLE 531000ALDER BIOPHARMACEUTICALS INCCOM0143391058285398315SHSOLE 2160150182300ALIGN TECHNOLOGY INCCOM01625510124929259323SHSOLE 189653069670ALKERMES PLCSHSG0176710522811410415SHSOLE 3008550109560ALLEGIANT TRAVEL COCOM01748X10248543291724SHSOLE 214323077401ALLIANCE DATA SYSTEMS CORPCOM01858110823351102192SHSOLE 10063201560ALPHABET INCCAP STK CL C02079K107158148204903SHSOLE 177415027488ALPHABET INCCAP STK CL A02079K305161879204276SHSOLE 176870027406AMAZON COM INCCOM023135106157944210628SHSOLE 181535029093AMERICAN WOODMARK 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INCCOM75473010944875647824SHSOLE 4801840167640REALPAGE INCCOM75606N10924329810983SHSOLE 5917130219270RED HAT INCCOM75657710250669726960SHSOLE 71852008440RUSH ENTERPRISES INCCL A78184620926548832231SHSOLE 4783550353876RYDER SYS INCCOM78354910852674707608SHSOLE 4775780230030SABRE CORPCOM78573M104587182353417SHSOLE 19539770399440SALESFORCE COM INCCOM79466L3021554672270923SHSOLE 19345750336348SCHLUMBERGER LTDCOM8068571087078424SHSOLE 842400SCHWAB CHARLES CORP NEWCOM808513105586251485306SHSOLE 12833260201980SCOTTS MIRACLE GRO COCL A81018610626609278482SHSOLE 252922025560SCRIPPS NETWORKS INTERACT INCL A COM81106510164003896775SHSOLE 7473900149385SEALED AIR CORP NEWCOM81211K10042936946970SHSOLE 7045300242440SERVICENOW INCCOM81762P1021256731690520SHSOLE 14748260215694SHOPIFY INCCL A82509L10717936418390SHSOLE 3059500112440SITEONE LANDSCAPE SUPPLY INCCOM82982L10314750424716SHSOLE 2307600193956SIX FLAGS ENTMT CORP NEWCOM83001A10234092568582SHSOLE 500913067669SKYWORKS SOLUTIONS INCCOM83088M10210072134910SHSOLE 13279502115SMITH A OCOM83186520937287787476SHSOLE 5744460213030SOTHEBYSCOM83589810717083428585SHSOLE 3128050115780SPIRIT AIRLS INCCOM84857710234026588075SHSOLE 3195750268500SPLUNK INCCOM84863710438924760985SHSOLE 6296300131355STAG INDL INCCOM85254J102410271718748SHSOLE 14230880295660STARWOOD PPTY TR INCCOM85571B105236551077691SHSOLE 7764010301290STATE STR CORPCOM8574771032983840SHSOLE 003840STERIS PLCSHS USDG847201041643672439037SHSOLE 19935940445443SUMMIT MATLS INCCL A86614U100366011538511SHSOLE 11224630416048SUN CMNTYS INCCOM86667410410267134021SHSOLE 95871038150SVB FINL GROUPCOM78486Q10119443113266SHSOLE 11148601780SYNCHRONY FINLCOM87165B103724031996209SHSOLE 16148390381370TABLEAU SOFTWARE INCCL A87336U10517057404685SHSOLE 2197850184900TELEFLEX INCCOM87936910621955136241SHSOLE 13408802153TESORO CORPCOM88160910162951719855SHSOLE 5652650154590THERMO FISHER SCIENTIFIC INCCOM88355610258291413116SHSOLE 333797079319TJX COS INC 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INCCOM92343V104188635325SHSOLE 3532500VISA INCCOM CL A92826C8391666462135938SHSOLE 18151860320752VULCAN MATLS COCOM92916010925850206550SHSOLE 20361502935WASTE CONNECTIONS INCCOM94106B101114914625SHSOLE 1462500WATSCO INCCOM94262220070138473519SHSOLE 3248640148655WESTERN ALLIANCE BANCORPCOM95763810924761508345SHSOLE 50032508020WESTERN DIGITAL CORPCOM958102105517476140SHSOLE 42110034030WESTERN REFNG INCCOM95931910427210718890SHSOLE 3889100329980WNS HOLDINGS LTDSPON ADR92932M10115970579660SHSOLE 3146250265035WRIGHT MED GROUP N VORD SHS 0.03 PARN96617118629082737499SHSOLE 17826110954888ZAYO GROUP HLDGS INCCOM98919V105333151013840SHSOLE 7384500275390ZENDESK INCCOM98936J101250291180635SHSOLE 6575960523039