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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 Buys/Sells In Portfolio (reported on 2020-08-13)
Company Ticker Current
Holdings
Previous
Holdings
Sells/Buys % of change
WNS HLDGS LTD    (SPON ADR)WNS461,9740
New Buy
New Buy
STORE CAP CORP    (COM)STOR1,082,8260
New Buy
New Buy
TRANE TECHNOLOGIES PLC    (SHS)1,457,4490
New Buy
New Buy
ALIGN TECHNOLOGY INC    (COM)ALGN527,4500
New Buy
New Buy
STERIS PLC    (SHS USD)707,4630
New Buy
New Buy
SVB FINANCIAL GROUP    (COM)SIVB1,9000
New Buy
New Buy
MIMECAST LTD    (ORD SHS)773,7740
New Buy
New Buy
2U INC    (COM)TWOU720,0960
New Buy
New Buy
YETI HLDGS INC    (COM)520,4550
New Buy
New Buy
SUN CMNTYS INC    (COM)SUI455,9990
New Buy
New Buy
WOODWARD INC    (COM)WGOV319,6180
New Buy
New Buy
SILICON MOTION TECHNOLOGY CO    (SPSIMO420,1390
New Buy
New Buy
PEPSICO INC    (COM)PEP36,4200
New Buy
New Buy
REXFORD INDL RLTY INC    (COM)REXR570,1880
New Buy
New Buy
AMERICAN TOWER CORP NEW    (COM)AMT2,9320
New Buy
New Buy
ISHARES TR    (RUS 1000 GRW ETF)IWF1,1170
New Buy
New Buy
MAXLINEAR INC    (COM)MXL824,7770
New Buy
New Buy
QORVO INC    (COM)QRVO213,0180
New Buy
New Buy
ASSURANT INC    (COM)AIZ321,8260
New Buy
New Buy
PRICE T ROWE GROUP INC    (COM)TROW36,5100
New Buy
New Buy
BRP INC    (COM SUN VTG)BRPIF545,3630
New Buy
New Buy
CHIPOTLE MEXICAN GRILL INC    (COM)CMG41,6420
New Buy
New Buy
MOTOROLA SOLUTIONS INC    (COM NEW)MSI296,7140
New Buy
New Buy
NVR INC    (COM)NVR1800
New Buy
New Buy
KLA CORP    (COM NEW)KLAC21,5250
New Buy
New Buy
INSULET CORP    (COM)PODD281,8230
New Buy
New Buy
BLACKROCK INC    (COM)BLK7,6800
New Buy
New Buy
HOWARD HUGHES CORP    (COM)HHC391,1150
New Buy
New Buy
GOLDMAN SACHS GROUP INC    (COM)GS114,5000
New Buy
New Buy
INSMED INC    (COM PAR $.01)INSM1,036,7110
New Buy
New Buy
BIOGEN INC    (COM)BIIB1,8320
New Buy
New Buy
EXTENDED STAY AMER INC    (UNIT 99/STAY1,954,8590
New Buy
New Buy
CYRUSONE INC    (COM)CONE226,4200
New Buy
New Buy
DISNEY WALT CO    (COM DISNEY)DIS6,7200
New Buy
New Buy
CUTERA INC    (COM)CUTR42,6800
New Buy
New Buy
COSTCO WHSL CORP NEW    (COM)COST3,6560
New Buy
New Buy
COMCAST CORP NEW    (CL A)CMCSA151,7740
New Buy
New Buy
CHURCHILL DOWNS INC    (COM)CHDN131,6440
New Buy
New Buy
SBA COMMUNICATIONS CORP NEW    (CL 269,71612,260
Added257,456
2099.96%
QUALCOMM INC    (COM)QCOM996,36378,690
Added917,673
1166.18%
LULULEMON ATHLETICA INC    (COM)LULU158,53013,662
Added144,868
1060.37%
ESSENTIAL PPTYS RLTY TR INC    (COM1,729,053161,169
Added1,567,884
972.81%
DROPBOX INC    (CL A)3,700,038391,924
Added3,308,114
844.07%
BLUEPRINT MEDICINES CORP    (COM)1,052,183168,641
Added883,542
523.91%
NXP SEMICONDUCTORS N V    (COM)NXPI504,279108,974
Added395,305
362.75%
JPMORGAN CHASE & CO    (COM)JPM415,71798,880
Added316,837
320.42%
SITIME CORP    (COM)542,578135,028
Added407,550
301.82%
ROCKET PHARMACEUTICALS INC    (COM)1,711,501440,172
Added1,271,329
288.82%
TRADEWEB MKTS INC    (CL A)1,113,024302,993
Added810,031
267.34%
KB HOME    (COM)KBH2,064,337696,355
Added1,367,982
196.44%
ADVANCED DRAIN SYS INC DEL    (COM)WMS1,710,232640,975
Added1,069,257
166.81%
BLACKSTONE GROUP INC    (COM CL A)966,378386,051
Added580,327
150.32%
GROCERY OUTLET HLDG CORP    (COM)663,346291,924
Added371,422
127.23%
ITT INC    (COM)391,199185,396
Added205,803
111.00%
PRIMERICA INC    (COM)PRI291,602143,610
Added147,992
103.05%
T-MOBILE US INC    (COM)TMUS1,042,804526,273
Added516,531
98.14%
OLD DOMINION FREIGHT LINE IN    (COODFL333,143168,867
Added164,276
97.28%
FLEETCOR TECHNOLOGIES INC    (COM)FLT346,898178,106
Added168,792
94.77%
VIAVI SOLUTIONS INC    (COM)VIAV3,382,2071,745,018
Added1,637,189
93.82%
FIRST AMERN FINL CORP    (COM)FAF666,253383,327
Added282,926
73.80%
ZYNGA INC    (CL A)ZNGA7,253,3574,197,657
Added3,055,700
72.79%
BOTTOMLINE TECH DEL INC    (COM)EPAY749,166445,397
Added303,769
68.20%
BOSTON SCIENTIFIC CORP    (COM)BSX3,100,1511,934,884
Added1,165,267
60.22%
AMEDISYS INC    (COM)AMED308,728203,236
Added105,492
51.90%
NIKE INC    (CL B)NKE1,381,237939,147
Added442,090
47.07%
TOPBUILD CORP    (COM)973,655701,300
Added272,355
38.83%
PACIRA BIOSCIENCES    (COM)PCRX1,361,2421,000,170
Added361,072
36.10%
CHARLES RIV LABS INTL INC    (COM)CRL301,610221,610
Added80,000
36.09%
BROOKFIELD ASSET MGMT INC    (CL A BAM971,269714,366
Added256,903
35.96%
SCIENCE APPLICATIONS INTL CO    (COSAIC1,061,976787,065
Added274,911
34.92%
ROCKWELL AUTOMATION INC    (COM)ROK406,626305,251
Added101,375
33.21%
OREILLY AUTOMOTIVE INC    (COM)ORLY264,407199,458
Added64,949
32.56%
SAGE THERAPEUTICS INC    (COM)SAGE562,457426,692
Added135,765
31.81%
AZEK CO INC    (CL A)671,425514,752
Added156,673
30.43%
WEX INC    (COM)WEX450,700346,852
Added103,848
29.94%
MOMENTA PHARMACEUTICALS INC    (COMMNTA409,804317,403
Added92,401
29.11%
SIGNATURE BK NEW YORK N Y    (COM)SBNY202,271157,068
Added45,203
28.77%
UNIFIRST CORP MASS    (COM)UNF177,399139,080
Added38,319
27.55%
QUEST DIAGNOSTICS INC    (COM)DGX995,564785,289
Added210,275
26.77%
IDEX CORP    (COM)IEX169,307138,808
Added30,499
21.97%
FIRST REP BK SAN FRANCISCO C    (COFRC208,152173,128
Added35,024
20.23%
CDW CORP    (COM)CDW291,966244,529
Added47,437
19.39%
INTEL CORP    (COM)INTC847,961712,278
Added135,683
19.04%
ALPHABET INC    (CAP STK CL C)GOOG4,8244,059
Added765
18.84%
HUBSPOT INC    (COM)HUBS363,217307,193
Added56,024
18.23%
ADVANCED ENERGY INDS    (COM)AEIS459,846393,324
Added66,522
16.91%
REPAY HLDGS CORP    (COM CL A)794,069695,208
Added98,861
14.22%
IRONWOOD PHARMACEUTICALS INC    (COIRWD5,341,2044,785,126
Added556,078
11.62%
BURLINGTON STORES INC    (COM)BURL237,124212,711
Added24,413
11.47%
METTLER TOLEDO INTERNATIONAL    (COMTD157,685141,462
Added16,223
11.46%
SELECTQUOTE INC    (COM)333,435299,640
Added33,795
11.27%
L3HARRIS TECHNOLOGIES INC    (COM)800,715727,736
Added72,979
10.02%
AMAZON COM INC    (COM)AMZN187,993172,404
Added15,589
9.04%
ICON PLC    (SHS)ICLR828,417772,782
Added55,635
7.19%
ACADIA PHARMACEUTICALS INC    (COM)ACAD545,976509,885
Added36,091
7.07%
NUANCE COMMUNICATIONS INC    (COM)NUAN1,450,2811,358,061
Added92,220
6.79%
MSA SAFETY INC    (COM)MSA197,116184,619
Added12,497
6.76%
TIMKEN CO    (COM)TKR1,094,6471,025,597
Added69,050
6.73%
SKYLINE CHAMPION CORPORATION    (COSKY726,965682,890
Added44,075
6.45%
LUMENTUM HLDGS INC    (COM)593,759558,220
Added35,539
6.36%
FATE THERAPEUTICS INC    (COM)FATE438,323412,096
Added26,227
6.36%
BERRY GLOBAL GROUP INC    (COM)BERY830,658782,873
Added47,785
6.10%
ENVESTNET INC    (COM)ENV189,913179,118
Added10,795
6.02%
ZENDESK INC    (COM)ZEN1,825,9251,729,420
Added96,505
5.58%
ASCENDIS PHARMA A S    (SPONSORED A1,438,6651,363,342
Added75,323
5.52%
ACI WORLDWIDE INC    (COM)ACIW624,878597,192
Added27,686
4.63%
TRANSUNION    (COM)983,881942,228
Added41,653
4.42%
ACCELERON PHARMA INC    (COM)XLRN664,994645,364
Added19,630
3.04%
GLOBAL PMTS INC    (COM)GPN993,161966,093
Added27,068
2.80%
LINCOLN ELEC HLDGS INC    (COM)LECO727,036709,340
Added17,696
2.49%
FACEBOOK INC    (CL A)FB1,284,0471,253,974
Added30,073
2.39%
PROOFPOINT INC    (COM)PFPT358,146352,321
Added5,825
1.65%
MADISON SQUARE GRDN SPRT COR    (CLMSG232,484229,291
Added3,193
1.39%
NICE LTD    (SPONSORED ADR)NICE567,793561,291
Added6,502
1.15%
ROSS STORES INC    (COM)ROST702,128695,519
Added6,609
0.95%
TERRENO RLTY CORP    (COM)TRNO406,537403,467
Added3,070
0.76%
NEXSTAR MEDIA GROUP INC    (CL A)NXST276,151274,537
Added1,614
0.58%
APPLIED MATLS INC    (COM)AMAT2,432,8002,421,339
Added11,461
0.47%
WORKDAY INC    (CL A)WDAY482,552482,538
Added14
0.00%
BRISTOL-MYERS SQUIBB CO    (COM)BMY1,914,4361,917,069
Reduced2,633
0.13%
DANAHER CORPORATION    (COM)DHR32,16732,287
Reduced120
0.37%
HILTON WORLDWIDE HLDGS INC    (COM)849,204852,470
Reduced3,266
0.38%
MICROSOFT CORP    (COM)MSFT2,237,1462,251,704
Reduced14,558
0.64%
SERVICENOW INC    (COM)NOW752,415757,574
Reduced5,159
0.68%
ULTA BEAUTY INC    (COM)ULTA266,642268,920
Reduced2,278
0.84%
COOPER COS INC    (COM NEW)COO205,509207,391
Reduced1,882
0.90%
THERMO FISHER SCIENTIFIC INC    (COTMO454,586458,961
Reduced4,375
0.95%
FORTINET INC    (COM)FTNT1,147,3881,159,712
Reduced12,324
1.06%
COSTAR GROUP INC    (COM)CSGP103,787104,934
Reduced1,147
1.09%
REALPAGE INC    (COM)RP736,592746,780
Reduced10,188
1.36%
AVALARA INC    (COM)236,755240,071
Reduced3,316
1.38%
HEICO CORP NEW    (CL A)HEI/A335,820340,538
Reduced4,718
1.38%
HOME DEPOT INC    (COM)HD798,981810,313
Reduced11,332
1.39%
EQUITY LIFESTYLE PPTYS INC    (COM)ELS418,909424,919
Reduced6,010
1.41%
MERITOR INC    (COM)MTOR1,174,9331,192,567
Reduced17,634
1.47%
FIDELITY NATL INFORMATION SV    (COFIS1,742,0091,769,957
Reduced27,948
1.57%
SALESFORCE COM INC    (COM)CRM1,133,2871,153,424
Reduced20,137
1.74%
VISA INC    (COM CL A)V1,165,1201,185,935
Reduced20,815
1.75%
AMETEK INC    (COM)AME1,498,1921,525,827
Reduced27,635
1.81%
ETSY INC    (COM)ETSY566,238581,372
Reduced15,134
2.60%
ANAPLAN INC    (COM)671,654689,610
Reduced17,956
2.60%
F M C CORP    (COM NEW)FMC414,338427,806
Reduced13,468
3.14%
TREX CO INC    (COM)TWP905,188934,702
Reduced29,514
3.15%
ATLASSIAN CORP PLC    (CL A)TEAM235,411243,682
Reduced8,271
3.39%
PAYPAL HLDGS INC    (COM)PYPL1,105,0321,144,169
Reduced39,137
3.42%
WILLIS TOWERS WATSON PLC LTD    (SHWLTW380,207394,840
Reduced14,633
3.70%
LPL FINL HLDGS INC    (COM)LPLA989,3851,027,545
Reduced38,160
3.71%
WALMART INC    (COM)WMT556,767579,817
Reduced23,050
3.97%
SPLUNK INC    (COM)SPLK1,325,1441,381,744
Reduced56,600
4.09%
APPLE INC    (COM)AAPL1,363,1351,424,618
Reduced61,483
4.31%
ALPHABET INC    (CAP STK CL A)GOOGL244,518256,074
Reduced11,556
4.51%
JUNIPER NETWORKS INC    (COM)JNPR823,587865,690
Reduced42,103
4.86%
ABBOTT LABS    (COM)ABT123,473130,150
Reduced6,677
5.13%
FIVE BELOW INC    (COM)FIVE582,689615,214
Reduced32,525
5.28%
HUNT J B TRANS SVCS INC    (COM)JBHT845,761902,623
Reduced56,862
6.29%
HUMANA INC    (COM)HUM427,187458,306
Reduced31,119
6.79%
IDEXX LABS INC    (COM)IDXX330,676354,957
Reduced24,281
6.84%
TWILIO INC    (CL A)604,070656,414
Reduced52,344
7.97%
MERCK & CO. INC    (COM)MRK88,78997,124
Reduced8,335
8.58%
BIO RAD LABS INC    (CL A)BIO355,370389,898
Reduced34,528
8.85%
AVERY DENNISON CORP    (COM)AVY88,19597,045
Reduced8,850
9.11%
CATALENT INC    (COM)CTLT1,045,5611,171,313
Reduced125,752
10.73%
SS&C TECHNOLOGIES HLDGS INC    (COMSSNC1,193,6751,355,088
Reduced161,413
11.91%
TRANSDIGM GROUP INC    (COM)TDG316,575359,386
Reduced42,811
11.91%
SERVICE CORP INTL    (COM)SCI108,850123,640
Reduced14,790
11.96%
TARGET CORP    (COM)TGT58,81567,075
Reduced8,260
12.31%
SAREPTA THERAPEUTICS INC    (COM)SRPT302,145346,086
Reduced43,941
12.69%
HENRY JACK & ASSOC INC    (COM)JKHY41,02447,079
Reduced6,055
12.86%
VERIZON COMMUNICATIONS INC    (COM)VZ115,660133,025
Reduced17,365
13.05%
GALLAGHER ARTHUR J & CO    (COM)AJG1,028,6011,201,309
Reduced172,708
14.37%
VERTEX PHARMACEUTICALS INC    (COM)VRTX533,578627,490
Reduced93,912
14.96%
TELEDYNE TECHNOLOGIES INC    (COM)TDY404,878476,818
Reduced71,940
15.08%
UNION PAC CORP    (COM)UNP487,792579,091
Reduced91,299
15.76%
CHARTER COMMUNICATIONS INC N    (CLCHTR220,881266,057
Reduced45,176
16.97%
NCR CORP NEW    (COM)NCR1,443,4761,751,950
Reduced308,474
17.60%
PAYLOCITY HLDG CORP    (COM)PCTY127,926156,123
Reduced28,197
18.06%
APOLLO GLOBAL MGMT INC    (COM CL A533,633653,859
Reduced120,226
18.38%
MKS INSTRS INC    (COM)MKSI204,635254,990
Reduced50,355
19.74%
XILINX INC    (COM)XLNX492,826614,738
Reduced121,912
19.83%
BIOMARIN PHARMACEUTICAL INC    (COMBMRN665,057838,657
Reduced173,600
20.69%
RPM INTL INC    (COM)RPM748,979951,697
Reduced202,718
21.30%
BROADCOM INC    (COM)302,853386,692
Reduced83,839
21.68%
CONSTELLATION BRANDS INC    (CL A)STZ386,429493,562
Reduced107,133
21.70%
MONGODB INC    (CL A)158,550203,549
Reduced44,999
22.10%
SEATTLE GENETICS INC    (COM)SGEN405,326523,273
Reduced117,947
22.54%
CISCO SYS INC    (COM)CSCO1,505,7991,975,876
Reduced470,077
23.79%
S&P GLOBAL INC    (COM)SPGI377,157494,899
Reduced117,742
23.79%
MSCI INC    (COM)MXB136,030180,725
Reduced44,695
24.73%
REPLIGEN CORP    (COM)RGEN238,103328,184
Reduced90,081
27.44%
COGNIZANT TECHNOLOGY SOLUTIO    (CLCTSH838,3471,174,394
Reduced336,047
28.61%
MASIMO CORP    (COM)MASI303,727433,277
Reduced129,550
29.90%
NOVARTIS AG    (SPONSORED ADR)NVS857,9631,252,684
Reduced394,721
31.51%
FAIR ISAAC CORP    (COM)FIC117,800174,502
Reduced56,702
32.49%
NEUROCRINE BIOSCIENCES INC    (COM)NBIX399,466648,157
Reduced248,691
38.36%
MICROCHIP TECHNOLOGY INC.    (COM)MCHP348,458613,150
Reduced264,692
43.16%
HAEMONETICS CORP    (COM)HAE262,468472,822
Reduced210,354
44.48%
NVIDIA CORPORATION    (COM)NVDA220,452404,322
Reduced183,870
45.47%
TEXAS ROADHOUSE INC    (COM)TXRH465,241870,007
Reduced404,766
46.52%
CERIDIAN HCM HLDG INC    (COM)381,034728,547
Reduced347,513
47.69%
REATA PHARMACEUTICALS INC    (CL A)158,746320,307
Reduced161,561
50.43%
BLACK KNIGHT INC    (COM)507,1001,024,607
Reduced517,507
50.50%
SQUARE INC    (CL A)437,214924,960
Reduced487,746
52.73%
NATIONAL STORAGE AFFILIATES    (COM323,336714,795
Reduced391,459
54.76%
DOCUSIGN INC    (COM)2,1805,430
Reduced3,250
59.85%
GLOBAL BLOOD THERAPEUTICS IN    (CO230,948622,402
Reduced391,454
62.89%
BRIGHT HORIZONS FAM SOL IN D    (COBFAM37,450115,532
Reduced78,082
67.58%
DEXCOM INC    (COM)DXCM158,898501,787
Reduced342,889
68.33%
HAMILTON LANE INC    (CL A)261,819845,974
Reduced584,155
69.05%
PALOMAR HLDGS INC    (COM)510,1901,681,434
Reduced1,171,244
69.65%
TURNING POINT THERAPEUTICS I    (CO256,078912,619
Reduced656,541
71.94%
ILLINOIS TOOL WKS INC    (COM)ITW173,471629,902
Reduced456,431
72.46%
TANDEM DIABETES CARE INC    (COM NE263,433998,643
Reduced735,210
73.62%
WASTE CONNECTIONS INC    (COM)275,9031,638,159
Reduced1,362,256
83.15%
STARBUCKS CORP    (COM)SBUX87,004652,351
Reduced565,347
86.66%
TELADOC HEALTH INC    (COM)18,018176,421
Reduced158,403
89.78%
CITIGROUP INC    (COM NEW)C87,6451,021,751
Reduced934,106
91.42%
ALEXANDRIA REAL ESTATE EQ IN    (COARE53,510798,170
Reduced744,660
93.29%
RUSH ENTERPRISES INC    (CL A)RUSHA51,967896,719
Reduced844,752
94.20%
ALIBABA GROUP HLDG LTD    (SPONSOREBABA1,89373,913
Reduced72,020
97.43%
NUTANIX INC    (CL A)NTNX17,025911,971
Reduced894,946
98.13%
BRP GROUP INC    (COM CL A)27,6901,644,886
Reduced1,617,196
98.31%
STRATEGIC ED INC    (COM)12,2601,124,957
Reduced1,112,697
98.91%
ZEBRA TECHNOLOGIES CORP    (CL A)ZBRA092,156
Sold Out
Sold Out
ESSENT GROUP LTD    (COM)ESNT0426,471
Sold Out
Sold Out
ORION ENGINEERED CARBONS S A    (COOEC01,018,384
Sold Out
Sold Out
CME GROUP INC    (COM)CME022,199
Sold Out
Sold Out
CVS HEALTH CORP    (COM)CVS0108,670
Sold Out
Sold Out
CADENCE DESIGN SYSTEM INC    (COM)CDNS0241,780
Sold Out
Sold Out
8X8 INC NEW    (COM)EGHT02,685,919
Sold Out
Sold Out
CARTERS INC    (COM)CRI0809,756
Sold Out
Sold Out
CYPRESS SEMICONDUCTOR CORP    (COM)CY025,020
Sold Out
Sold Out
INTERSECT ENT INC    (COM)XENT0456,423
Sold Out
Sold Out
TEXAS INSTRS INC    (COM)TXN071,695
Sold Out
Sold Out
NEXTERA ENERGY INC    (COM)NEE016,075
Sold Out
Sold Out
PARKER HANNIFIN CORP    (COM)PH041,170
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PROGRESSIVE CORP OHIO    (COM)PGR0651,746
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ALNYLAM PHARMACEUTICALS INC    (COMALNY0138,664
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TAIWAN SEMICONDUCTOR MFG LTD    (SPTSM092,340
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MICRON TECHNOLOGY INC    (COM)MU0684,891
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MATSON INC    (COM)MATX0232,628
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FLOWSERVE CORP    (COM)FLS01,272,774
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FISERV INC    (COM)FISV0705,628
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GUIDEWIRE SOFTWARE INC    (COM)GWRE0314,127
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VALERO ENERGY CORP    (COM)VLO08,080
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LIVE NATION ENTERTAINMENT IN    (COLYV047,350
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ELDORADO RESORTS INC    (COM)ERI02,019,164
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* Portfolios do not reflect changes after reporting
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