13FBOX
WESTFIELD CAPITAL MANAGEMENT CO LP · 13F Holdings
Options Calculator Rankings

WESTFIELD CAPITAL MANAGEMENT CO LP

No.293 Data as of 2026Q2
Latest AUM (Q2 2026)
$30.61B
QoQ Change Q1 2026
+$6.78B+28.4%
Holdings
278
New Buys
68
Adds
98
Reduces
104
Exits
40
Unchanged
8
Holdings Value Trend
Holdings by Sector
Stock Ownership TrendPortfolio %Prev Q %Q2 2026 ValueQ2 2026 SharesPrev Q ValuePrev Q SharesShares ChangeAction
NVIDIA CORPORATIONNVDA
5.28%4.62%$1.62B8.1M$1.10B6.3M+1.8M+27.91%Add
ALPHABET INCGOOGL
4.38%2.45%$1.34B3.7M$582.8M2.0M+1.7M+84.98%Add
AASCENDIS PHARMA A/S SPONSORED ADRASND
4.18%4.62%$1.28B4.8M$1.10B4.8M-15,173-0.32%Reduce
AXON ENTERPRISEAXON
2.73%1.9%$836.1M1.5M$451.9M1.1M+427,356+40.16%Add
FFTAI AVIATION LTDFTAI
2.6%2.93%$794.6M2.9M$697.8M2.8M+89,001+3.12%Add
APPLE INCAAPL
2.43%3.34%$744.7M2.6M$795.2M3.1M-559,339-17.85%Reduce
CCOMFORT SYS USA INCFIX
2.3%3.59%$704.5M355,433$856.2M620,915-265,482-42.76%Reduce
BROADCOM INCAVGO
1.92%1.61%$588.0M1.6M$382.8M1.2M+319,597+25.84%Add
MICROSOFT CORPMSFT
1.72%2.56%$527.6M1.4M$610.6M1.6M-235,219-14.26%Reduce
HOWMET AEROSPACE INC COMHWM
1.69%2.21%$516.6M1.9M$527.7M2.3M-368,221-16.08%Reduce
ELI LILLY & COLLY
1.63%1.41%$499.8M416,732$335.3M364,579+52,153+14.30%Add
SNOWFLAKE INC COM SHSSNOW
1.44%0.45%$441.9M1.7M$108.4M718,810+1.0M+141.58%Add
MMKS INC.MKSI
1.35%1.01%$413.0M928,617$240.6M1.0M-118,146-11.29%Reduce
META PLATFORMS INCMETA
1.25%1.26%$381.6M677,389$301.4M526,822+150,567+28.58%Add
VERTIV HOLDINGS COVRT
1.15%2.02%$353.0M1.1M$481.5M1.9M-867,335-45.13%Reduce
GE VERNOVA INCGEV
0.93%0.73%$283.5M241,272$174.0M199,306+41,966+21.06%Add
MICRON TECHNOLOGY INCMU
0.86%0.14%$263.4M228,203$33.9M100,434+127,769+127.22%Add
VISA INCV
0.85%0.58%$261.6M762,403$138.0M456,548+305,855+66.99%Add
AAPI GROUP CORP COM STKAPG
0.85%0.79%$260.6M6.2M$187.8M4.6M+1.5M+32.78%Add
TAPESTRY INCTPR
0.81%1.3%$248.3M1.7M$310.3M2.2M-502,293-22.84%Reduce
RHYTHM PHARMACEUTICALS INCRYTM
0.8%0.7%$245.2M2.2M$167.8M1.9M+279,472+14.49%Add
LIFE TIME GROUP HOLDINGS INCLTH
0.8%0.36%$244.8M6.0M$85.8M3.2M+2.8M+88.20%Add
TAIWAN SEMICONDUCTOR MANUFACTSM
0.8%0.7%$244.0M510,999$166.8M493,504+17,495+3.55%Add
GUARDANT HEALTH INCGH
0.8%0.53%$243.7M1.6M$125.9M1.4M+261,920+19.22%Add
QUANTA SVCS INCPWR
0.78%0.76%$238.7M331,489$182.2M331,816-327-0.10%Reduce
SERVICENOW INCNOW
0.77%0.61%$235.7M2.4M$145.8M1.4M+979,524+70.26%Add
ADVANCED MICRO DEVICES INCAMD
0.76%<0.01%$234.2M403,081$1.0M5,020+398,061+7,929.50%Add
PALO ALTOPANW
0.73%0.43%$224.5M658,331$102.0M636,483+21,848+3.43%Add
WOODWARD INCWWD
0.73%0.41%$224.0M526,505$97.4M272,185+254,320+93.44%Add
ARISTA NETWORKS INCANET
0.73%0.4%$223.7M1.3M$95.8M780,402+536,694+68.77%Add
LPL FINL HLDGS INCLPLA
0.73%1.11%$223.4M793,061$265.2M881,506-88,445-10.03%Reduce
RROCKET LAB CORP COMRKLB
0.7%0.85%$214.9M2.1M$203.7M3.2M-1.1M-33.37%Reduce
AMER SPORTS INC COM SHSAS
0.7%0.54%$214.7M6.3M$129.6M3.9M+2.4M+61.14%Add
CLOUDFLARE INCNET
0.67%0.47%$204.9M835,502$111.7M541,566+293,936+54.28%Add
AMAZON COM INCAMZN
0.67%1.99%$204.9M859,806$474.8M2.3M-1.4M-62.28%Reduce
GGARMIN LTD SHSGRMN
0.67%0.37%$204.5M861,057$87.3M376,362+484,695+128.78%Add
RREGAL REXNORD CORPORATION COMRRX
0.67%0.54%$204.1M856,976$127.7M681,717+175,259+25.71%Add
NATERA INCNTRA
0.64%0.63%$197.2M726,628$150.9M754,729-28,101-3.72%Reduce
MORGAN STANLEYMS
0.64%0.34%$196.6M940,560$81.7M496,558+444,002+89.42%Add
CCARPENTER TECHNOLOGY CORPCRS
0.63%$193.7M314,082$00+314,082New Buy
SSAMSARA INC CLASS AIOT
0.62%0.67%$189.3M5.8M$160.8M5.1M+763,638+15.05%Add
DDYNATRACE INCDT
0.61%0.65%$186.6M4.2M$155.7M4.2M+39,635+0.94%Add
CATERPILLAR INCCAT
0.61%0.1%$186.0M174,620$22.9M32,325+142,295+440.20%Add
SSEMTECH CORPSMTC
0.6%0.41%$183.4M1.1M$98.5M1.3M-147,326-11.50%Reduce
AMETEK INC COMAME
0.57%0.67%$175.1M723,798$159.9M745,832-22,034-2.95%Reduce
ABIVAX SAABVX
0.57%0.62%$174.5M1.3M$147.3M1.3M-13,113-0.99%Reduce
INSMED INCINSM
0.57%1.01%$173.7M1.6M$240.1M1.5M+161,102+10.97%Add
ITT INCITT
0.54%0.56%$164.2M830,382$134.0M703,309+127,073+18.07%Add
GGILEAD SCIENCES INC COMGILD
0.53%0.02%$162.7M1.3M$3.7M26,690+1.3M+4,724.39%Add
PTC THERAPEUTICS INCPTCT
0.52%$159.6M2.0M$00+2.0MNew Buy

🧭 Institutional Sector Flow Heatmap

Net Outflow Net Inflow