WESTFIELD CAPITAL MANAGEMENT CO LP logo

WESTFIELD CAPITAL MANAGEMENT CO LP Portfolio Analytics

Investment Analysis & Holdings Breakdown

Comprehensive portfolio analytics for WESTFIELD CAPITAL MANAGEMENT CO LP with $23.8B in long positions as of Q3 2025, 32% allocated to Technology, and 30% concentrated in top 10 positions.

Portfolio Value
$23.8B
Top 10 Concentration
30%
Top Sector
Technology (32%)
US Exposure
95%
Market Cap Focus
Large Cap
Countries
11

Composition Analysis

Portfolio breakdown by sector, industry, and market capitalization

Sector Allocation

Technology: 31.60%TechnologyIndustrials: 20.30%IndustrialsHealthcare: 11.10%HealthcareConsumer Cyclical: 9.40%Consumer CyclicalFinancial Services: 8.90%Financial ServicesCommunication Services: 8.50%Communication ServicesEnergy: 1.40%Utilities: 1.10%Consumer Defensive: 0.70%Basic Materials: 0.50%
Technology
31.60%
Industrials
20.30%
Healthcare
11.10%
Consumer Cyclical
9.40%
Financial Services
8.90%
Communication Services
8.50%
Energy
1.40%
Utilities
1.10%
Consumer Defensive
0.70%
Basic Materials
0.50%

Industry Breakdown

75 industries across all sectors

Semiconductors: 10.87%SemiconductorsSoftware - Infrastructure: 7.74%Software - InfrastructureInternet Content & Information: 6.22%Software - Application: 5.84%Aerospace & Defense: 4.71%Engineering & Construction: 4.23%Specialty Retail: 3.83%Industrial - Machinery: 3.81%Biotechnology: 3.79%Consumer Electronics: 3.56%Entertainment: 2.29%Medical - Devices: 2.07%Electrical Equipment & Parts: 2.02%Rental & Leasing Services: 1.67%Asset Management: 1.60%Hardware, Equipment & Parts: 1.57%Financial - Credit Services: 1.29%Financial - Capital Markets: 1.21%Medical - Healthcare Information Services: 1.20%Luxury Goods: 1.16%Banks - Regional: 1.16%Medical - Diagnostics & Research: 1.13%Banks - Diversified: 1.13%Waste Management: 1.12%Gambling, Resorts & Casinos: 0.93%Drug Manufacturers - General: 0.89%Medical - Instruments & Supplies: 0.88%Integrated Freight & Logistics: 0.85%Computer Hardware: 0.78%46 more: 14.03%46 more
Semiconductors
Technology
10.87%
Software - Infrastructure
Technology
7.74%
Internet Content & Information
Communication Services
6.22%
Software - Application
Technology
5.84%
Aerospace & Defense
Industrials
4.71%
Engineering & Construction
Industrials
4.23%
Specialty Retail
Consumer Cyclical
3.83%
Industrial - Machinery
Industrials
3.81%
Biotechnology
Healthcare
3.79%
Consumer Electronics
Technology
3.56%
Entertainment
Communication Services
2.29%
Medical - Devices
Healthcare
2.07%

Filter by Sector

Select a sector to filter industries

Market Cap Distribution

Mega Cap (> $200B): 27.69%Mega Cap (> $200B)Large Cap ($10B - $200B): 44.96%Large Cap ($10B - $200B)Mid Cap ($2B - $10B): 19.78%Mid Cap ($2B - $10B)Small Cap ($300M - $2B): 0.53%Nano Cap (< $50M): 1.10%N/A (ETF or Unknown): 5.94%
Mega Cap (> $200B)
27.69%
Large Cap ($10B - $200B)
44.96%
Mid Cap ($2B - $10B)
19.78%
Small Cap ($300M - $2B)
0.53%
Nano Cap (< $50M)
1.10%
N/A (ETF or Unknown)
5.94%

Portfolio Concentration

Top 10 Holdings %
30.48%
Top 20 Holdings %
42.49%
Top 50 Holdings %
62.78%
Top 100 Holdings %
81.54%

Geographic Exposure

Portfolio breakdown by country of incorporation

Domestic (US)
94.8%
International
5.2%
Countries
11
Largest Int'l Market
Canada - 1.04%
United States of America
94.80% ($22.6B)
215 holdings
Canada
1.04% ($246.7M)
4 holdings
United Kingdom
0.98% ($232.8M)
3 holdings
Netherlands
0.93% ($221.5M)
3 holdings
Israel
0.65% ($154.9M)
2 holdings
Taiwan
0.55% ($130.5M)
1 holdings
Ireland
0.34% ($82.0M)
3 holdings
Cayman Islands
0.25% ($59.4M)
1 holdings
Luxembourg
0.25% ($58.6M)
1 holdings
Australia
0.22% ($51.5M)
1 holdings
Uruguay
0.00% ($731.5K)
1 holdings

Holding Behavior

Investment patterns and position management analysis

Portfolio Stability & Commitment

Avg. Top 10
28.9 quarters
Avg. Top 20
25.6 quarters
Avg. All Positions
9.8 quarters
Median Holding Period
4 quarters
Persistence Rate
55.32%
Persistent Holdings Weight
71.93%
Persistent Positions
130
Longest Held
VISA Inc. logo
VISA Inc.V - 49 quarters

Position Sizing & Influence

Current Quarter

Avg. New Position
0.22%
Avg. Position Weight
0.43%
Largest Position
Nvidia Corp logo
Nvidia CorpNVDA - 5.09%
Largest Ownership Stake
Semtech Corp logo
Semtech CorpSMTC - 3.90%
Avg. Ownership Stake
0.65%
Ownership Stake >5%
0
Ownership Stake >1%
44

Historical (Since Q2 2013)

Avg. New Position
0.27%
Avg. Ownership Stake
0.63%
Largest Position
Huntsman Corporation logo
Huntsman CorporationHUN - 8.03% (Q2 2014)
Largest Ownership Stake
Forum Energy Technologies, Inc. logo
Forum Energy Technologies, Inc.FET - 19.78% (Q4 2014)

Portfolio Turnover

Current Quarter

Turnover Ratio
17.3%
Value Traded
$4.13B
Positions Added
16
Positions Exited
47

Historical (Since Q2 2013)

Avg. Turnover Ratio
15.3%
Avg. Positions Added
28
Avg. Positions Exited
37
Highest Turnover
22.3%
Q1 2016
Lowest Turnover
10.8%
Q3 2021

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