WESTFIELD CAPITAL MANAGEMENT CO LP Q2 2023 Filing

Filed August 11, 2023

Portfolio Value

$15.7B

Holdings

227

Report Date

Q2 2023

Filing Type

13F-HR

All Holdings (227 positions)

#StockSharesValue% PortfolioType
101
WINGWINGSTOP INC
307,664$61.6B391.27%
102
MDBMONGODB INC
148,661$61.1B388.19%
103
CDWCDW CORP
327,726$60.1B382.09%
104
NTAPNETAPP INC
781,914$59.7B379.55%
105
AMATAPPLIED MATLS INC
405,687$58.6B372.56%
106
PTCPTC INC
401,095$57.1B362.63%
107
WCNWASTE CONNECTIONS INC
385,630$55.1B350.20%
108
APLSAPELLIS PHARMACEUTICALS INC
596,232$54.3B345.10%
109
TERTERADYNE INC
487,320$54.3B344.70%
110
LITELUMENTUM HLDGS INC
945,342$53.6B340.74%
111
FMCFMC CORP
511,805$53.4B339.29%
112
OVVOVINTIV INC
1,376,035$52.4B332.83%
113
ITTITT INC
561,832$52.4B332.73%
114
ZSZSCALER INC
355,503$52.0B330.45%
115
FLT1EURFLEETCOR TECHNOLOGIES INC
206,620$51.9B329.61%
116
AAONAAON INC
541,030$51.3B325.91%
117
BFAMBRIGHT HORIZONS FAM SOL IN D
548,660$50.7B322.27%
118
APTVAPTIV PLC
493,001$50.3B319.78%
119
CWSTCASELLA WASTE SYS INC
552,187$49.9B317.33%
120
TECHBIO-TECHNE CORP
607,141$49.6B314.89%
121
AIGAMERICAN INTL GROUP INC
860,251$49.5B314.49%
122
SRCUSDSPIRIT RLTY CAP INC NEW
1,236,767$48.7B309.44%
123
MTNVAIL RESORTS INC
192,928$48.6B308.60%
124
ANETEURARISTA NETWORKS INC
295,786$47.9B304.56%
125
AXONAXON ENTERPRISE INC
244,843$47.8B303.53%
126
BAHBOOZ ALLEN HAMILTON HLDG COR
426,876$47.6B302.68%
127
PRIPRIMERICA INC
235,168$46.5B295.48%
128
FOURSHIFT4 PMTS INC
674,775$45.8B291.14%
129
NOGNORTHERN OIL & GAS INC
1,307,658$44.9B285.14%
130
KNSLKINSALE CAP GROUP INC
116,700$43.7B277.46%
131
AMDADVANCED MICRO DEVICES INC
375,542$42.8B271.80%
132
OKTAOKTA INC
610,561$42.3B269.03%
133
FCNCAFIRST CTZNS BANCSHARES INC N
32,264$41.4B263.10%
134
AXTAAXALTA COATING SYS LTD
1,231,136$40.4B256.64%
135
MKTXMARKETAXESS HLDGS INC
153,852$40.2B255.54%
136
MTHMERITAGE HOMES CORP
278,113$39.6B251.39%
137
CHRCHURCHILL DOWNS INC
283,689$39.5B250.84%
138
LYVLIVE NATION ENTERTAINMENT IN
428,530$39.0B248.06%
139
RGENREPLIGEN CORP
271,005$38.3B243.57%
140
CABOCABLE ONE INC
57,696$37.9B240.87%
141
ESSESSEX PPTY TR INC
156,161$36.6B232.47%
142
AVNTAVIENT CORPORATION
888,522$36.3B230.89%
143
IOTSAMSARA INC
1,286,486$35.6B226.49%
144
NBIXNEUROCRINE BIOSCIENCES INC
375,340$35.4B224.88%
145
HAEHAEMONETICS CORP MASS
408,819$34.8B221.14%
146
PSTGPURE STORAGE INC
928,601$34.2B217.24%
147
ETSYETSY INC
377,817$32.0B203.11%
148
PLNTPLANET FITNESS INC
471,522$31.8B202.04%
149
BOXBOX INC
1,059,557$31.1B197.78%
150
OLEDUNIVERSAL DISPLAY CORP
210,003$30.3B192.31%
151
AZTAAZENTA INC
644,791$30.1B191.23%
152
9KGNEXTIER OILFIELD SOLUTIONS
3,339,174$29.9B189.67%
153
WNSNWNS HLDGS LTD
398,871$29.4B186.82%
154
MDRXVERADIGM INC
2,236,112$28.2B179.01%
155
WEXWEX INC
150,147$27.3B173.69%
156
SSENTINELONE INC
1,767,167$26.7B169.54%
157
CALXCALIX INC
531,402$26.5B168.51%
158
ONTOONTO INNOVATION INC
226,199$26.3B167.39%
159
HALHALLIBURTON CO
777,473$25.6B162.96%
160
MTSIMACOM TECH SOLUTIONS HLDGS I
391,368$25.6B162.95%
161
QCOMQUALCOMM INC
215,334$25.6B162.86%
162
TMOTHERMO FISHER SCIENTIFIC INC
48,613$25.4B161.15%
163
STSENSATA TECHNOLOGIES HLDG PL
549,387$24.7B157.04%
164
INVAINNOVIVA INC
1,917,251$24.4B155.07%
165
STAGSTAG INDL INC
653,938$23.5B149.08%
166
NYCBEURNEW YORK CMNTY BANCORP INC
2,021,885$22.7B144.39%
167
KLICKULICKE & SOFFA INDS INC
368,191$21.9B139.07%
168
FNFABRINET
166,669$21.6B137.53%
169
STEPSTEPSTONE GROUP INC
871,852$21.6B137.43%
170
MLTXMOONLAKE IMMUNOTHERAPEUTICS
410,119$20.9B132.89%
171
AVGOBROADCOM INC
24,088$20.9B132.75%
172
APY1EURCHAMPIONX CORPORATION
650,105$20.2B128.21%
173
PLMRPALOMAR HLDGS INC
343,936$20.0B126.83%
174
CERE1EURCEREVEL THERAPEUTICS HLDNG I
575,534$18.3B116.25%
175
EYENATIONAL VISION HLDGS INC
670,232$16.3B103.43%
176
ETNBGBP89BIO INC
835,231$15.8B100.56%
177
IBMINTERNATIONAL BUSINESS MACHS
84,815$11.3B72.11%
178
GOOGALPHABET INC
82,189$9.9B63.17%
179
PEPPEPSICO INC
51,446$9.5B60.54%
180
MRKMERCK & CO INC
81,399$9.4B59.67%
181
KOCOCA COLA CO
138,056$8.3B52.82%
182
TTTRANE TECHNOLOGIES PLC
42,642$8.2B51.81%
183
NKENIKE INC
67,714$7.5B47.48%
184
GILDGILEAD SCIENCES INC
92,751$7.1B45.42%
185
DHRDANAHER CORPORATION
29,294$7.0B44.67%
186
MTDMETTLER TOLEDO INTERNATIONAL
5,318$7.0B44.32%
187
DYHTARGET CORP
48,178$6.4B40.37%
188
HSYHERSHEY CO
24,943$6.2B39.57%
189
MLIMUELLER INDS INC
68,960$6.0B38.24%
190
CMICUMMINS INC
24,113$5.9B37.56%
191
BACBANK AMERICA CORP
199,496$5.7B36.36%
192
ELSEQUITY LIFESTYLE PPTYS INC
84,195$5.6B35.78%
193
UPSUNITED PARCEL SERVICE INC
30,883$5.5B35.17%
194
OGM1COGENT COMMUNICATIONS HLDGS
81,687$5.5B34.92%
195
CITCINTAS CORP
10,375$5.2B32.77%
196
TSCOTRACTOR SUPPLY CO
23,276$5.1B32.70%
197
MCDMCDONALDS CORP
17,177$5.1B32.56%
198
ITGARTNER INC
14,370$5.0B31.98%
199
ADIANALOG DEVICES INC
25,571$5.0B31.65%
200
TKRTIMKEN CO
47,820$4.4B27.80%
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