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STOCK TICKER:

MAJOR GURUS:
David Einhorn
Bill Ackman
Bill Miller
Steven Cohen
Jim Simons

WESTFIELD CAPITAL MANAGEMENT CO LP INSTITUTION : WESTFIELD CAPITAL MANAGEMENT CO LP
WESTFIELD CAPITAL MANAGEMENT CO LP Portfolio (reported on 2019-11-08)
Company (links to holding history) Ticker Value On
2019-09-30
No of Shares % of portfolio
MEDICINES CO    (COM) MDCO 323,420,000 6,468,402 2.58%
MICROSOFT CORP    (COM) MSFT 314,500,000 2,262,099 2.51%
APPLE INC    (COM) AAPL 311,517,000 1,390,886 2.49%
AMAZON COM INC    (COM) AMZN 304,758,000 175,561 2.44%
ALPHABET INC    (CAP STK CL A) GOOGL 280,049,000 229,334 2.24%
VISA INC    (COM CL A) V 234,817,000 1,365,133 1.88%
FACEBOOK INC    (CL A) FB 232,505,000 1,305,621 1.86%
TELEDYNE TECHNOLOGIES INC    (COM) TDY 210,609,000 654,085 1.68%
FIDELITY NATL INFORMATION SV    (COM) FIS 209,957,000 1,581,476 1.68%
SERVICENOW INC    (COM) NOW 188,837,000 743,894 1.51%
HOME DEPOT INC    (COM) HD 185,258,000 798,456 1.48%
INGERSOLL-RAND PLC    (SHS) IR 172,507,000 1,400,105 1.38%
SALESFORCE COM INC    (COM) CRM 167,847,000 1,130,739 1.34%
MARATHON PETE CORP    (COM) MPC 166,455,000 2,739,997 1.33%
AMETEK INC NEW    (COM) AME 165,079,000 1,797,857 1.32%
L3HARRIS TECHNOLOGIES INC    (COM) 161,158,000 772,420 1.29%
METTLER TOLEDO INTERNATIONAL    (COM) MTD 158,957,000 225,663 1.27%
VERTEX PHARMACEUTICALS INC    (COM) VRTX 158,026,000 932,748 1.26%
CHARTER COMMUNICATIONS INC N    (CL A) CHTR 147,789,000 358,607 1.18%
GLOBAL PMTS INC    (COM) GPN 142,864,000 898,516 1.14%
BIO RAD LABS INC    (CL A) BIO 137,060,000 411,912 1.09%
THERMO FISHER SCIENTIFIC INC    (COM) TMO 136,162,000 467,476 1.09%
ILLINOIS TOOL WKS INC    (COM) ITW 123,161,000 787,021 0.98%
S&P GLOBAL INC    (COM) SPGI 118,786,000 484,879 0.95%
TRANSDIGM GROUP INC    (COM) TDG 117,979,000 226,591 0.94%
COOPER COS INC    (COM NEW) COO 113,287,000 381,437 0.90%
ASCENDIS PHARMA A S    (SPONSORED ADR) 108,269,000 1,124,054 0.86%
BROOKFIELD ASSET MGMT INC    (CL A LTD VT SH) BAM 107,459,000 2,024,096 0.86%
ADOBE INC    (COM) ADBE 106,380,000 385,086 0.85%
CONSTELLATION BRANDS INC    (CL A) STZ 104,045,000 501,956 0.83%
TRANSUNION    (COM) 103,405,000 1,274,873 0.82%
APPLIED MATLS INC    (COM) AMAT 101,582,000 2,035,706 0.81%
STERIS PLC    (SHS USD) 100,997,000 698,993 0.80%
GALLAGHER ARTHUR J & CO    (COM) AJG 100,550,000 1,122,585 0.80%
MARRIOTT INTL INC NEW    (CL A) MAR 99,795,000 802,404 0.79%
ALEXANDRIA REAL ESTATE EQ IN    (COM) ARE 97,759,000 634,635 0.78%
ICON PLC    (SHS) ICLR 96,824,000 657,146 0.77%
T MOBILE US INC    (COM) TMUS 96,084,000 1,219,802 0.76%
BROADCOM INC    (COM) 95,885,000 347,320 0.76%
SPLUNK INC    (COM) SPLK 93,866,000 796,417 0.75%
CATERPILLAR INC DEL    (COM) CAT 93,596,000 741,006 0.74%
HUNT J B TRANS SVCS INC    (COM) JBHT 93,389,000 844,002 0.74%
TOPBUILD CORP    (COM) 89,018,000 923,136 0.71%
UNION PACIFIC CORP    (COM) UNP 87,929,000 542,837 0.70%
TREX CO INC    (COM) TWP 86,883,000 955,488 0.69%
DEXCOM INC    (COM) DXCM 86,776,000 581,453 0.69%
BLACKSTONE GROUP INC    (COM CL A) 86,110,000 1,763,111 0.68%
BRISTOL MYERS SQUIBB CO    (COM) BMY 84,932,000 1,674,853 0.68%
NICE LTD    (SPONSORED ADR) NICE 81,690,000 568,083 0.65%
CISCO SYS INC    (COM) CSCO 81,280,000 1,645,021 0.65%
DISNEY WALT CO    (COM DISNEY) DIS 80,996,000 621,515 0.64%
IDEXX LABS INC    (COM) IDXX 80,254,000 295,127 0.64%
BOSTON SCIENTIFIC CORP    (COM) BSX 80,218,000 1,971,434 0.64%
FORTINET INC    (COM) FTNT 76,759,000 999,989 0.61%
WALMART INC    (COM) WMT 74,740,000 629,758 0.59%
PROGRESSIVE CORP OHIO    (COM) PGR 73,761,000 954,837 0.59%
LPL FINL HLDGS INC    (COM) LPLA 72,395,000 883,940 0.57%
ON SEMICONDUCTOR CORP    (COM) ONNN 72,373,000 3,767,480 0.57%
HILTON WORLDWIDE HLDGS INC    (COM) 71,748,000 770,568 0.57%
PAYPAL HLDGS INC    (COM) PYPL 68,905,000 665,171 0.55%
ZENDESK INC    (COM) ZEN 68,411,000 938,686 0.54%
ESSENT GROUP LTD    (COM) ESNT 68,274,000 1,432,232 0.54%
BLACK KNIGHT INC    (COM) 65,846,000 1,078,374 0.52%
ALTICE USA INC    (CL A) 65,315,000 2,277,376 0.52%
ULTA BEAUTY INC    (COM) ULTA 64,251,000 256,337 0.51%
WEX INC    (COM) WEX 64,055,000 316,992 0.51%
SPIRIT RLTY CAP INC NEW    (COM NEW) 63,962,000 1,336,446 0.51%
FIVE BELOW INC    (COM) FIVE 63,550,000 503,962 0.50%
WOODWARD INC    (COM) WGOV 62,905,000 583,368 0.50%
BLUEPRINT MEDICINES CORP    (COM) 62,226,000 846,959 0.49%
HAEMONETICS CORP    (COM) HAE 61,945,000 491,083 0.49%
FAIR ISAAC CORP    (COM) FIC 60,968,000 200,871 0.48%
FLEETCOR TECHNOLOGIES INC    (COM) FLT 60,885,000 212,306 0.48%
LULULEMON ATHLETICA INC    (COM) LULU 60,447,000 313,959 0.48%
LINCOLN ELEC HLDGS INC    (COM) LECO 59,680,000 687,879 0.47%
IHS MARKIT LTD    (SHS) 58,201,000 870,236 0.46%
PURE STORAGE INC    (CL A) 56,633,000 3,343,154 0.45%
PIONEER NAT RES CO    (COM) PXD 56,373,000 448,224 0.45%
PBF ENERGY INC    (CL A) PBF 56,196,000 2,066,779 0.44%
MADISON SQUARE GARDEN CO NEW    (CL A) MSG 55,144,000 209,261 0.44%
ELDORADO RESORTS INC    (COM) ERI 54,257,000 1,360,859 0.43%
PROOFPOINT INC    (COM) PFPT 53,533,000 414,827 0.42%
FISERV INC    (COM) FISV 52,653,000 508,284 0.42%
ROSS STORES INC    (COM) ROST 52,587,000 478,713 0.42%
EOG RES INC    (COM) EOG 52,246,000 703,935 0.41%
AUTODESK INC    (COM) ADSK 52,055,000 352,437 0.41%
QUEST DIAGNOSTICS INC    (COM) DGX 49,820,000 465,479 0.39%
ACCELERON PHARMA INC    (COM) XLRN 48,875,000 1,237,031 0.39%
RPM INTL INC    (COM) RPM 46,775,000 679,773 0.37%
TAKE-TWO INTERACTIVE SOFTWAR    (COM) TTWO 46,623,000 371,975 0.37%
MICROCHIP TECHNOLOGY INC    (COM) MCHP 46,615,000 501,723 0.37%
REALPAGE INC    (COM) RP 46,572,000 740,891 0.37%
PALO ALTO NETWORKS INC    (COM) PANW 46,041,000 225,880 0.36%
HEICO CORP NEW    (CL A) HEI/A 45,463,000 467,200 0.36%
TWILIO INC    (CL A) 45,452,000 413,348 0.36%
COGNIZANT TECHNOLOGY SOLUTIO    (CL A) CTSH 45,416,000 753,613 0.36%
FLOWSERVE CORP    (COM) FLS 45,147,000 966,528 0.36%
8X8 INC NEW    (COM) EGHT 44,329,000 2,139,452 0.35%
SBA COMMUNICATIONS CORP NEW    (CL A) 43,989,000 182,413 0.35%
QTS RLTY TR INC    (COM CL A) QTS 43,009,000 836,581 0.34%
GUIDEWIRE SOFTWARE INC    (COM) GWRE 42,868,000 406,798 0.34%
NCR CORP NEW    (COM) NCR 42,692,000 1,352,719 0.34%
SUMMIT MATLS INC    (CL A) 41,044,000 1,848,819 0.32%
D R HORTON INC    (COM) DHI 38,996,000 739,829 0.31%
YUM CHINA HLDGS INC    (COM) 38,351,000 844,172 0.30%
WPX ENERGY INC    (COM) WPX 38,294,000 3,616,070 0.30%
INTERXION HOLDING N.V    (SHS) INXN 37,928,000 465,598 0.30%
RUSH ENTERPRISES INC    (CL A) RUSHA 36,989,000 958,754 0.29%
SS&C TECHNOLOGIES HLDGS INC    (COM) SSNC 36,684,000 711,338 0.29%
V F CORP    (COM) VFC 36,682,000 412,199 0.29%
SUN CMNTYS INC    (COM) SUI 36,617,000 246,662 0.29%
MSCI INC    (COM) MXB 35,970,000 165,191 0.28%
COHERENT INC    (COM) COHR 35,823,000 233,040 0.28%
ORION ENGINEERED CARBONS S A    (COM) OEC 34,963,000 2,092,346 0.27%
IAC INTERACTIVECORP    (COM) IACI 34,874,000 159,993 0.27%
COSTAR GROUP INC    (COM) CSGP 34,258,000 57,752 0.27%
KNOWLES CORP    (COM) KN 34,030,000 1,673,052 0.27%
MASIMO CORP    (COM) MASI 32,949,000 221,445 0.26%
SIGNATURE BK NEW YORK N Y    (COM) SBNY 31,714,000 266,013 0.25%
ROCKWELL AUTOMATION INC    (COM) ROK 31,344,000 190,195 0.25%
DIAMONDBACK ENERGY INC    (COM) FANG 31,139,000 346,337 0.24%
BURLINGTON STORES INC    (COM) BURL 30,955,000 154,913 0.24%
HUBSPOT INC    (COM) HUBS 30,491,000 201,118 0.24%
PERFORMANCE FOOD GROUP CO    (COM) PFGC 30,161,000 655,537 0.24%
GRACE W R & CO DEL NEW    (COM) GRA 29,645,000 444,050 0.23%
CHARLES RIV LABS INTL INC    (COM) CRL 29,076,000 219,658 0.23%
TIMKEN CO    (COM) TKR 28,573,000 656,689 0.22%
LAM RESEARCH CORP    (COM) LRCX 28,434,000 123,034 0.22%
CABOT MICROELECTRONICS CORP    (COM) CCMP 27,974,000 198,104 0.22%
ENTEGRIS INC    (COM) ENTG 27,094,000 575,740 0.21%
FIDELITY NATIONAL FINANCIAL    (FNF GROUP COM) FNF 26,854,000 604,673 0.21%
FIRSTCASH INC    (COM) 26,210,000 285,922 0.20%
CERIDIAN HCM HLDG INC    (COM) 26,185,000 530,376 0.20%
PAPA JOHNS INTL INC    (COM) PZZA 25,726,000 491,420 0.20%
STRATEGIC ED INC    (COM) 25,473,000 187,466 0.20%
ARISTA NETWORKS INC    (COM) ANET 25,426,000 106,420 0.20%
F M C CORP    (COM NEW) FMC 25,388,000 289,554 0.20%
KEMPER CORP DEL    (COM) KMPR 25,250,000 323,931 0.20%
WNS HOLDINGS LTD    (SPON ADR) WNS 25,000,000 425,536 0.20%
INGEVITY CORP    (COM) 24,678,000 290,874 0.19%
SAREPTA THERAPEUTICS INC    (COM) SRPT 24,145,000 320,561 0.19%
INTEGRA LIFESCIENCES HLDGS C    (COM NEW) IART 23,750,000 395,377 0.19%
NUANCE COMMUNICATIONS INC    (COM) NUAN 23,702,000 1,453,242 0.18%
CATALENT INC    (COM) CTLT 23,289,000 488,640 0.18%
BRIGHT HORIZONS FAM SOL IN D    (COM) BFAM 23,058,000 151,203 0.18%
OLD DOMINION FREIGHT LINE IN    (COM) ODFL 22,882,000 134,625 0.18%
ALNYLAM PHARMACEUTICALS INC    (COM) ALNY 22,541,000 280,297 0.18%
IRONWOOD PHARMACEUTICALS INC    (COM CL A) IRWD 21,656,000 2,522,489 0.17%
VIAVI SOLUTIONS INC    (COM) VIAV 21,650,000 1,545,887 0.17%
MIMECAST LTD    (ORD SHS) 21,622,000 606,169 0.17%
MSA SAFETY INC    (COM) MSA 21,552,000 197,523 0.17%
ROGERS CORP    (COM) ROG 21,108,000 154,397 0.16%
COUPA SOFTWARE INC    (COM) 21,022,000 162,244 0.16%
LUMENTUM HLDGS INC    (COM) 20,860,000 389,479 0.16%
SAGE THERAPEUTICS INC    (COM) SAGE 20,617,000 146,961 0.16%
INTERSECT ENT INC    (COM) XENT 20,360,000 1,196,926 0.16%
WESTERN DIGITAL CORP    (COM) WDC 20,310,000 340,545 0.16%
GRAND CANYON ED INC    (COM) LOPE 19,688,000 200,490 0.15%
PACIRA BIOSCIENCES    (COM) PCRX 19,603,000 514,929 0.15%
RYDER SYS INC    (COM) R 19,273,000 372,286 0.15%
BERRY GLOBAL GROUP INC    (COM) BERY 19,267,000 490,635 0.15%
APOLLO GLOBAL MGMT INC    (COM CL A) 18,554,000 490,587 0.14%
TELADOC HEALTH INC    (COM) 18,309,000 270,363 0.14%
ALPHABET INC    (CAP STK CL C) GOOG 18,247,000 14,969 0.14%
CYRUSONE INC    (COM) CONE 18,240,000 230,593 0.14%
HAMILTON LANE INC    (CL A) 18,059,000 317,047 0.14%
MERITOR INC    (COM) MTOR 17,652,000 954,164 0.14%
RMR GROUP INC    (CL A) 17,442,000 383,509 0.13%
ZYNGA INC    (CL A) ZNGA 17,111,000 2,940,081 0.13%
PALOMAR HLDGS INC    (COM) 15,274,000 387,463 0.12%
PAYLOCITY HLDG CORP    (COM) PCTY 14,602,000 149,639 0.11%
SMARTSHEET INC    (COM CL A) 14,382,000 399,155 0.11%
AMERICAN EAGLE OUTFITTERS IN    (COM) AEO 14,114,000 870,133 0.11%
FATE THERAPEUTICS INC    (COM) FATE 14,064,000 905,619 0.11%
FIRST HAWAIIAN INC    (COM) FHB 13,797,000 516,760 0.11%
ENVESTNET INC    (COM) ENV 13,299,000 234,554 0.10%
MATSON INC    (COM) MATX 12,936,000 344,878 0.10%
ORCHARD THERAPEUTICS PLC    (ADS) 12,796,000 1,077,111 0.10%
MOMENTA PHARMACEUTICALS INC    (COM) MNTA 12,742,000 983,216 0.10%
TRADEWEB MKTS INC    (CL A) 12,412,000 335,643 0.09%
FIBROGEN INC    (COM) FGEN 11,687,000 316,045 0.09%
AVERY DENNISON CORP    (COM) AVY 11,038,000 97,195 0.08%
ABBOTT LABS    (COM) ABT 10,916,000 130,462 0.08%
REPAY HLDGS CORP    (COM CL A) 9,787,000 734,214 0.07%
CORREVIO PHARMA CORP    (COM) 9,753,000 4,876,455 0.07%
TEXAS INSTRS INC    (COM) TXN 9,265,000 71,685 0.07%
WORLD WRESTLING ENTMT INC    (CL A) WWE 9,183,000 129,065 0.07%
ROCKET PHARMACEUTICALS INC    (COM) 9,158,000 786,114 0.07%
COVETRUS INC    (COM) 8,688,000 730,716 0.06%
MERCK & CO INC    (COM) MRK 8,189,000 97,284 0.06%
COCA COLA CO    (COM) KO 8,134,000 149,420 0.06%
VERIZON COMMUNICATIONS INC    (COM) VZ 8,048,000 133,335 0.06%
VAIL RESORTS INC    (COM) MTN 7,655,000 33,641 0.06%
JPMORGAN CHASE & CO    (COM) JPM 7,533,000 64,010 0.06%
TARGET CORP    (COM) TGT 7,184,000 67,195 0.05%
APELLIS PHARMACEUTICALS INC    (COM) 7,080,000 293,901 0.05%
NEXTERA ENERGY INC    (COM) NEE 7,035,000 30,193 0.05%
HENRY JACK & ASSOC INC    (COM) JKHY 6,893,000 47,219 0.05%
CVS HEALTH CORP    (COM) CVS 6,804,000 107,880 0.05%
ARCHER DANIELS MIDLAND CO    (COM) ADM 6,209,000 151,189 0.04%
1 2 Next >Full Portfolio View
Total Value As 2019-09-30: 12,488,835,000 SEC FILING
* Portfolios do not reflect changes after reporting
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MAJOR GURUS:
Warren Buffett
John Paulson
George Soros

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