Westfield Capital Management Co Lp Top Holdings and 13F Report (2024)

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About Westfield Capital Management Co Lp

Investment Activity

Westfield Capital Management Co Lp has $19.05 billion in total holdings as of March 31, 2024.
Westfield Capital Management Co Lp owns shares of 244 different stocks, but just 108 companies or ETFs make up 80% of its holdings.
Approximately 12.56% of the portfolio was purchased this quarter.
About 12.74% of the portfolio was sold this quarter.
This quarter, Westfield Capital Management Co Lp has purchased 239 new stocks and bought additional shares in 83 stocks.
Westfield Capital Management Co Lp sold shares of 117 stocks and completely divested from 27 stocks this quarter.

Largest Holdings

Microsoft: $640,726,963
Ascendis Pharma A/S: $616,050,091
Apple: $555,123,085
NVIDIA: $542,105,984
Amazon.com: $475,018,570

Largest New Holdings this Quarter

Taiwan Semiconductor Manufacturing: $116,246,324 Holding
COOPER COS INC: $78,831,478 Holding
Coherent: $68,487,082 Holding
ON: $65,897,727 Holding
MicroStrategy: $60,891,997 Holding

Largest Purchases this Quarter

Vertiv: 1,563,466 shares (about $127.69M)
Apple: 744,383 shares (about $127.65M)
Taiwan Semiconductor Manufacturing: 854,438 shares (about $116.25M)
NXP Semiconductors: 339,678 shares (about $84.16M)
COOPER COS INC: 776,971 shares (about $78.83M)

Largest Sales this Quarter

Marvell Technology: 2,390,713 shares (about $169.45M)
Eli Lilly and Company: 140,005 shares (about $108.92M)
Watsco: 159,978 shares (about $69.11M)
Saia: 117,327 shares (about $68.64M)
Tapestry: 1,033,482 shares (about $49.07M)

Sector Allocation Over Time

Selling

Neutral

Buying

Latest 13F Holdings and Changes Since Previous Quarterly Filing

Issuer Name	Holdings Value	Approximate Purchase/Sale	Change in Shares	Shares Held	% of Portfolio	Sector
MSFT Microsoft	$640,726,963	$14,707,947 ▼	-2.2%	1,522,930	3.4%	Computer and Technology
ASND Ascendis Pharma A/S	$616,050,091	$6,739,158 ▲	1.1%	4,075,214	3.2%	Medical
AAPL Apple	$555,123,085	$127,646,790 ▲	29.9%	3,237,247	2.9%	Computer and Technology
NVDA NVIDIA	$542,105,984	$3,735,316 ▲	0.7%	599,967	2.8%	Computer and Technology
AMZN Amazon.com	$475,018,570	$53,849,194 ▲	12.8%	2,633,433	2.5%	Retail/Wholesale
GOOGL Alphabet	$446,243,521	$44,027,032 ▼	-9.0%	2,956,626	2.3%	Computer and Technology
TDG TransDigm Group	$388,415,162	$5,912,920 ▼	-1.5%	315,374	2.0%	Aerospace
META Meta Platforms	$341,160,645	$10,609,435 ▼	-3.0%	702,584	1.8%	Computer and Technology
BLDR Builders FirstSource	$288,066,870	$7,367,448 ▼	-2.5%	1,381,284	1.5%	Retail/Wholesale
V Visa	$284,659,924	$18,509,981 ▼	-6.1%	1,019,994	1.5%	Business Services
VRT Vertiv	$277,618,511	$127,688,253 ▲	85.2%	3,399,272	1.5%	Computer and Technology
AXON Axon Enterprise	$221,927,507	$7,013,200 ▼	-3.1%	709,306	1.2%	Industrial Products
NOW ServiceNow	$214,530,178	$11,330,787 ▼	-5.0%	281,388	1.1%	Computer and Technology
DXCM DexCom	$213,523,274	$44,082,334 ▼	-17.1%	1,539,461	1.1%	Medical
FIX Comfort Systems USA	$211,924,008	$76,398,453 ▲	56.4%	667,036	1.1%	Construction
UNH UnitedHealth Group	$211,057,365	$4,175,269 ▼	-1.9%	426,637	1.1%	Medical
ICLR ICON Public	$180,365,676	$7,378,799 ▼	-3.9%	536,883	0.9%	Medical
CRM Salesforce	$177,866,048	$5,286,311 ▼	-2.9%	590,564	0.9%	Computer and Technology
AME AMETEK	$174,414,030	$4,798,748 ▼	-2.7%	953,603	0.9%	Computer and Technology
OPCH Option Care Health	$173,448,253	$23,097,422 ▲	15.4%	5,171,385	0.9%	Medical
MHO M/I Homes	$166,272,301	$4,846,200 ▲	3.0%	1,219,989	0.9%	Construction
LECO Lincoln Electric	$165,127,144	$10,574,961 ▼	-6.0%	646,442	0.9%	Industrial Products
ABBV AbbVie	$161,555,299	$8,638,824 ▲	5.6%	887,179	0.8%	Medical
CSGP CoStar Group	$159,137,822	$24,004,431 ▲	17.8%	1,647,389	0.8%	Computer and Technology
SAIA Saia	$151,562,970	$68,636,295 ▼	-31.2%	259,082	0.8%	Transportation
NICE NICE	$148,927,718	$2,036,225 ▼	-1.3%	571,436	0.8%	Computer and Technology
HD Home Depot	$143,775,880	$2,697,474 ▼	-1.8%	374,807	0.8%	Retail/Wholesale
UBER Uber Technologies	$136,093,156	$712,158 ▼	-0.5%	1,767,673	0.7%	Computer and Technology
AVTR Avantor	$134,094,569	$4,467,258 ▼	-3.2%	5,244,215	0.7%	Medical
WSC WillScot Mobile Mini	$127,970,930	$1,506,926 ▲	1.2%	2,752,063	0.7%	Consumer Discretionary
PGR Progressive	$127,692,823	$8,398,966 ▲	7.0%	617,410	0.7%	Finance
LEGN Legend Biotech	$125,628,902	$25,999,225 ▲	26.1%	2,239,774	0.7%	Medical
CPRT Copart	$125,514,485	$20,085,612 ▲	19.1%	2,167,032	0.7%	Business Services
COST Costco Wholesale	$124,002,220	$11,641,509 ▼	-8.6%	169,256	0.7%	Retail/Wholesale
LNTH Lantheus	$121,867,040	$24,574,655 ▲	25.3%	1,958,018	0.6%	Medical
HUBS HubSpot	$121,826,409	$1,520,661 ▲	1.3%	194,437	0.6%	Computer and Technology
FLYW Flywire	$120,018,152	$11,183,356 ▲	10.3%	4,837,491	0.6%	Business Services
TSM Taiwan Semiconductor Manufacturing	$116,246,324	$116,246,324 ▲	New Holding	854,438	0.6%	Computer and Technology
STZ Constellation Brands	$116,085,189	$2,227,072 ▼	-1.9%	427,161	0.6%	Consumer Staples
INSP Inspire Medical Systems	$115,620,168	$1,573,337 ▼	-1.3%	538,294	0.6%	Medical
GPN Global Payments	$115,448,151	$424,370 ▼	-0.4%	863,745	0.6%	Business Services
CDNS Cadence Design Systems	$115,383,737	$3,897,538 ▼	-3.3%	370,675	0.6%	Computer and Technology
WING Wingstop	$115,349,315	$23,743,453 ▲	25.9%	314,818	0.6%	Retail/Wholesale
TXRH Texas Roadhouse	$114,418,864	$4,295,347 ▼	-3.6%	740,719	0.6%	Retail/Wholesale
MGM MGM Resorts International	$111,526,824	$1,843,598 ▼	-1.6%	2,362,356	0.6%	Consumer Discretionary
PCVX Vaxcyte	$108,346,149	$8,914,592 ▲	9.0%	1,586,095	0.6%	Medical
RCKT Rocket Pharmaceuticals	$107,329,768	$1,136,087 ▲	1.1%	3,984,030	0.6%	Medical
AIG American International Group	$106,781,075	$1,204,443 ▼	-1.1%	1,366,011	0.6%	Finance
CMG Chipotle Mexican Grill	$106,292,989	$9,336,645 ▼	-8.1%	36,567	0.6%	Retail/Wholesale
ROST Ross Stores	$105,868,260	$2,389,106 ▼	-2.2%	721,370	0.6%	Retail/Wholesale
UNP Union Pacific	$103,903,535	$3,408,100 ▲	3.4%	422,492	0.5%	Transportation
LPLA LPL Financial	$101,776,973	$11,530,216 ▼	-10.2%	385,227	0.5%	Finance
MASI Masimo	$100,753,791	$19,439,417 ▼	-16.2%	686,100	0.5%	Medical
AVY Avery Dennison	$100,527,019	$4,002,426 ▼	-3.8%	450,289	0.5%	Industrial Products
APO Apollo Global Management	$99,716,256	$8,857,123 ▲	9.7%	886,761	0.5%	Finance
ITT ITT	$98,433,621	$10,971,092 ▲	12.5%	723,617	0.5%	Multi-Sector Conglomerates
FFIV F5	$97,734,972	$9,188,290 ▼	-8.6%	515,507	0.5%	Computer and Technology
FICO Fair Isaac	$96,681,737	$2,115,577 ▼	-2.1%	77,370	0.5%	Computer and Technology
WDAY Workday	$96,154,169	$6,409,896 ▼	-6.2%	352,536	0.5%	Computer and Technology
MNDY monday.com	$93,867,958	$23,285,842 ▲	33.0%	415,584	0.5%	Computer and Technology
HUBB Hubbell	$93,613,282	$24,358,454 ▼	-20.6%	225,547	0.5%	Industrial Products
IDXX IDEXX Laboratories	$92,879,402	$5,894,422 ▲	6.8%	172,021	0.5%	Medical
NXPI NXP Semiconductors	$92,799,476	$84,161,971 ▲	974.4%	374,539	0.5%	Computer and Technology
SMAR Smartsheet	$91,871,472	$12,345,834 ▼	-11.8%	2,386,272	0.5%	Computer and Technology
DKNG DraftKings	$91,164,541	$14,557,495 ▲	19.0%	2,007,587	0.5%	Consumer Discretionary
DT Dynatrace	$89,323,346	$1,116,325 ▼	-1.2%	1,923,414	0.5%	Computer and Technology
CE Celanese	$89,305,469	$577,621 ▼	-0.6%	519,641	0.5%	Basic Materials
ROK Rockwell Automation	$88,676,224	$2,059,704 ▼	-2.3%	304,384	0.5%	Industrial Products
PTC PTC	$88,278,625	$3,837,938 ▼	-4.2%	467,231	0.5%	Computer and Technology
FOUR Shift4 Payments	$88,087,960	$37,111,982 ▲	72.8%	1,333,252	0.5%	Business Services
IEX IDEX	$87,817,918	$2,665,919 ▼	-2.9%	359,880	0.5%	Industrial Products
ARES Ares Management	$86,349,786	$1,287,912 ▼	-1.5%	649,344	0.5%	Finance
MTH Meritage Homes	$86,091,204	$10,238,091 ▲	13.5%	490,660	0.5%	Construction
JBHT J.B. Hunt Transport Services	$85,961,919	$1,390,766 ▼	-1.6%	431,427	0.5%	Transportation
CDW CDW	$85,515,352	$10,966,045 ▼	-11.4%	334,332	0.4%	Computer and Technology
OWL Blue Owl Capital	$85,418,166	$5,234,140 ▲	6.5%	4,529,065	0.4%	Finance
VMC Vulcan Materials	$84,982,049	$1,907,710 ▼	-2.2%	311,381	0.4%	Construction
MSCI MSCI	$84,357,736	$1,342,277 ▲	1.6%	150,518	0.4%	Computer and Technology
IOT Samsara	$84,224,803	$9,189,394 ▲	12.2%	2,228,759	0.4%	Computer and Technology
CSCO Cisco Systems	$84,173,373	$75,074,829 ▲	825.1%	1,686,503	0.4%	Computer and Technology
CWST Casella Waste Systems	$83,842,946	$9,536,901 ▲	12.8%	848,012	0.4%	Industrial Products
MKSI MKS Instruments	$82,468,326	$4,036,281 ▲	5.1%	620,063	0.4%	Computer and Technology
HLT Hilton Worldwide	$80,858,094	$1,837,665 ▼	-2.2%	379,064	0.4%	Consumer Discretionary
PODD Insulet	$80,269,962	$40,640,439 ▼	-33.6%	468,320	0.4%	Medical
PR Permian Resources	$80,210,554	$3,587,435 ▼	-4.3%	4,541,934	0.4%	Oils/Energy
BIO Bio-Rad Laboratories	$79,726,148	$5,776,375 ▼	-6.8%	230,509	0.4%	Medical
MDB MongoDB	$79,567,217	$26,711,887 ▲	50.5%	221,858	0.4%	Computer and Technology
RRR Red Rock Resorts	$79,452,924	$3,498,034 ▼	-4.2%	1,328,200	0.4%	Consumer Discretionary
COOPER COS INC	$78,831,478	$78,831,478 ▲	New Holding	776,971	0.4%	COM
SUI Sun Communities	$77,662,834	$2,904,236 ▼	-3.6%	604,004	0.4%	Finance
NSIT Insight Enterprises	$75,211,107	$16,444,678 ▲	28.0%	405,407	0.4%	Retail/Wholesale
AZEK AZEK	$74,712,294	$1,281,363 ▲	1.7%	1,487,700	0.4%	Construction
HXL Hexcel	$74,181,407	$28,040,548 ▼	-27.4%	1,018,276	0.4%	Aerospace
AJG Arthur J. Gallagher & Co.	$72,857,173	$19,401,608 ▼	-21.0%	291,382	0.4%	Finance
PCOR Procore Technologies	$72,345,885	$771,165 ▲	1.1%	880,442	0.4%	Business Services
OVV Ovintiv	$71,881,604	$3,230,567 ▼	-4.3%	1,385,002	0.4%	Oils/Energy
BFAM Bright Horizons Family Solutions	$71,597,042	$2,958,129 ▼	-4.0%	631,590	0.4%	Consumer Discretionary
ZS Zscaler	$70,942,356	$8,433,342 ▼	-10.6%	368,283	0.4%	Computer and Technology
NOG Northern Oil and Gas	$69,430,040	$8,413,350 ▲	13.8%	1,749,749	0.4%	Oils/Energy
NBIX Neurocrine Biosciences	$69,400,379	$12,584,373 ▼	-15.3%	503,193	0.4%	Medical

Showing largest 100 holdings. View all holdings.

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Westfield Capital Management Co Lp Top Holdings and 13F Report (2024)

About Westfield Capital Management Co Lp

Investment Activity

Largest Holdings

Largest New Holdings this Quarter

Largest Purchases this Quarter

Largest Sales this Quarter

Sector Allocation Over Time

Latest 13F Holdings and Changes Since Previous Quarterly Filing

More Institutional Buying and Selling Information

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Westfield Capital Management Co Lp Top Holdings and 13F Report (2024)

About Westfield Capital Management Co Lp

Investment Activity

Largest Holdings

Largest New Holdings this Quarter

Largest Purchases this Quarter

Largest Sales this Quarter

Sector Allocation Over Time

Map of 500 Largest Holdings ofWestfield Capital Management Co Lp

Latest 13F Holdings and Changes Since Previous Quarterly Filing

More Institutional Buying and Selling Information