Stellex Capital Management
Stellex Capital Management is a private equity firm founded in 2015 by ex-Carlyle Group Partners Ray Whiteman and Michael Stewart that invests $75–$150 million in middle-market companies in North America and Europe. It focuses on transitional situations, carve-outs, and operational transformations across aerospace and defense, industrial services, food, transportation, and manufacturing sectors.
- Company typePrivate
- Founded2014
- HeadquartersNew York, United States
- Headcount51–100
- GTM typeB2B
- OfferingServices
What Stellex Capital Management does
Stellex Capital Management is a private equity firm founded in 2015 by Ray Whiteman and Michael Stewart, both former Partners at The Carlyle Group who co-headed Carlyle Strategic Partners. The firm invests in middle-market companies in North America and Europe with typical equity checks of $75–$150 million at enterprise values of $100–$500 million, and it structures majority and minority recapitalizations, carve-outs, turnarounds, structured financings, and first-time institutional capital transactions. Stellex's investment thesis centers on "embracing complexity" and executing operational transformations rather than financial engineering, and it serves family businesses, independent sponsors, and corporates on divestitures, joint ventures, and take-privates.
Stellex's portfolio is concentrated in five verticals — Aerospace, Defense & Government Services; Business & Industrial Services; Food Products & Services; Transportation, Logistics & Distribution; and Manufacturing, Industrial & Automotive — and spans roughly 30+ operating companies. Representative holdings include David Brown Santasalo (engineered industrial gear systems, 26 locations across six continents, 1,100+ employees), J. Skinner Baking Partners (400M+ units annually across 35,000+ retail doors), RTC Aerospace (precision aerospace and defense components), A. Stucki Company (rail components), Dennis & Co. (multi-brand automotive dealership group), G2 Risk Solutions (data and risk analytics), and TriplePoint MEP (specialty mechanical and electrical services for data centers, advanced manufacturing, and healthcare). Recent carve-outs include the ~€385 million EV Dürr environmental technology business and the Survitec Beaufort aerospace and defense division.
The firm's revenue model is private equity fund management: management fees and carried interest on its middle-market buyout funds, sourced primarily through institutional LPs and family offices. Operating geography spans the U.S. (New York headquarters, with offices in Ann Arbor/Detroit and Pittsburgh) and Europe (London regional headquarters), and the firm has been actively building Stellex Resource Group — a dedicated portfolio operations, talent, and supply chain transformation platform staffed by senior hires from Platinum Equity, Heidrick & Struggles, Walmart, and Korn Ferry — to institutionalize its operational value-add thesis across the portfolio.
Stellex Capital Management firmographics
Firmographics- Name
- Stellex Capital Management
- Legal name
- Stellex Capital Management LLC
- Website
- https://www.stellexcapital.com
- Company type
- Private
- Founded year
- 2014
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Stellex Capital Management is a private equity firm founded in 2015 by ex-Carlyle Group Partners Ray Whiteman and Michael Stewart that invests $75–$150 million in middle-market companies in North America and Europe. It focuses on transitional situations, carve-outs, and operational transformations across aerospace and defense, industrial services, food, transportation, and manufacturing sectors.
- Ownership category
- akta.pro rank
Stellex Capital Management industry classification
Industry- Product category
- Private Equity Investment Management
- NAICS
- Portfolio Management and Investment Advice (523940), Portfolio Management and Investment Advice (52394)
- SIC
- Investment Advice (6282)
- akta.pro primary industry
- Insurance General Accounts (Institutional Asset Owners) (FSAAAGAG)
Keywords
Where Stellex Capital Management is headquartered
LocationHeadquarters
- HQ city
- New York
- HQ country
- United States
- HQ region
- North America
Offices4 records
Markets served
Stellex Capital Management business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Private Equity Fund Management: Stellex Capital Management generates revenue through management fees and carried interest from its private equity funds. The firm invests in middle-market companies undergoing transitions and special situations, with typical investment sizes of $75-$150 million at enterprise values of $100-$500 million.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
Stellex Capital Management product offering
Product offeringCore offering
Stellex Capital Management is a private equity firm that invests in middle-market companies in North America and Europe, typically deploying $75–$150 million at enterprise values of $100–$500 million. The firm executes majority and minority recapitalizations, carve-outs, turnarounds, structured financings, and first-time institutional capital transactions, then supports portfolio companies through Stellex Resource Group with customized operational transformation plans across aerospace and defense, business and industrial services, food products, transportation and logistics, and manufacturing, industrial, and automotive sectors. Revenue is earned through management fees and carried interest on its private equity funds.
Product overview
Stellex Capital Management is a private equity firm that invests in middle-market companies in North America and Europe. The firm does not offer a unified software product but rather provides private equity investment management services with a portfolio of portfolio companies across multiple sectors including aerospace/defense, business & industrial services, food products & services, transportation/logistics/distribution, and manufacturing/industrial/automotive. The firm's investment strategy focuses on companies facing transitional crossroads, providing flexible capital solutions and operational transformation support rather than financial engineering.
Differentiator
Problem solved
Functional benefit
Products and services
- Private Equity Investment Management Services End-to-end private equity investment management for middle-market companies in North America and Europe. Includes sourcing, executing, and managing majority and minority recapitalizations, carve-outs, turnarounds, structured financings, and first-time institutional capital transactions, with typical investment sizes of $75–$150 million at enterprise values of $100–$500 million. Services are delivered directly to business owners, family businesses, independent sponsors, and corporate divestiture teams.
- Stellex Resource Group — Portfolio Operational Transformation In-house operational transformation platform supporting Stellex portfolio companies with commercial transformation, supply chain transformation, portfolio operations, and portfolio talent functions. Provided to portfolio companies as part of Stellex's value creation model.
Quantifiable outcome
- Over $500 million in revenue achieved by portfolio company TriplePoint MEP
- +2 more outcomes
Companies that use Stellex Capital Management
Customer profileNamed customers5 records
Segments6 records
Ideal customer profiles2 records
Stellex Capital Management technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Stellex Capital Management partnerships and signals
Strategic signalScale indicators17 records
Recent moves9 records
Expansion highlights6 records
Stellex Capital Management competitors and assessment
Company assessmentDirect peers
- Wynnchurch Capital: Middle-market private equity firm investing in industrial, business services, and specialty manufacturing companies undergoing operational or financial transitions. Comparable in deal size, sector focus, and operational-transformation value proposition to Stellex.
- Platinum Equity: Operationally focused private equity firm specializing in carve-outs, divestitures, and complex situations across industrial, services, and consumer sectors. Direct comparable on operational alpha approach and transition-oriented deal strategy, though operating at a larger scale.
- Pfingsten Partners: Middle-market private equity firm focused on industrial, business services, and consumer companies with an operational improvement playbook. Closely comparable in fund size, deal size, sector overlap, and operational value-add orientation.
- Sun Capital Partners: Middle-market private equity firm investing in operationally intensive businesses in industrial, consumer, and business services sectors. Comparable in middle-market orientation, sector breadth, and operational improvement focus.
- Centre Lane Partners: Middle-market private equity firm focused on businesses undergoing change, with investment sizes and sector focus (consumer, industrials, services) closely aligned to Stellex. Direct comparable in deal size and transition-themed strategy.
- Olympus Partners: Middle-market private equity firm with multi-sector focus including industrial, business services, and consumer products. Comparable in fund size, hold periods, and operational value-add orientation.
- High Road Capital Partners: Lower middle-market private equity firm focused on industrial, business services, and consumer companies with an operational improvement thesis. Closely comparable on deal size, sector focus, and operational transformation approach.
- New Water Capital: Middle-market private equity firm focused on consumer products and industrial companies, including carve-outs from larger corporations. Comparable in deal size, sector focus on consumer/industrial, and operational improvement orientation.
- KPS Capital Partners: Middle-market private equity firm specializing in industrial and manufacturing turnarounds, restructurings, and operational turnarounds. Closely aligned with Stellex's transition/special-situations industrial focus, though typically at slightly larger investment sizes.
Broad incumbents
- The Carlyle Group: Global mega-fund private equity firm where Stellex co-founders Whiteman and Stewart previously led Carlyle Strategic Partners. Stellex continues to co-invest with Carlyle (e.g., ARMADA), making Carlyle both a parent of Stellex alumni and a recurring counterparty in the middle-market industrial space.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
Stellex Capital Management social profiles
Digital presenceStellex Capital Management financial estimates
Financial estimateRevenue estimate
Valuation estimate
Stellex Capital Management leadership team
Management profileNumber of profiles
Profiles11 records
Stellex Capital Management subsidiaries and ownership
Company hierarchySubsidiaries34 records
Stellex Capital Management funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Stellex Capital Management M&A and investment
M&A and investmentM&A29 records
Investments9 records
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Stellex Capital Management
What does Stellex Capital Management do?
Stellex Capital Management is a private equity firm that invests in middle-market companies in North America and Europe, typically deploying $75–$150 million at enterprise values of $100–$500 million. The firm executes majority and minority recapitalizations, carve-outs, turnarounds, structured financings, and first-time institutional capital transactions, then supports portfolio companies through Stellex Resource Group with customized operational transformation plans across aerospace and defense, business and industrial services, food products, transportation and logistics, and manufacturing, industrial, and automotive sectors. Revenue is earned through management fees and carried interest on its private equity funds.
Is Stellex Capital Management a public or private company?
Stellex Capital Management is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Stellex Capital Management founded?
Stellex Capital Management was founded in 2014. It employs 51 to 100 people.
Where is Stellex Capital Management based?
Stellex Capital Management is headquartered in New York, United States, in the North America region.
How does Stellex Capital Management make money?
One revenue line is on record: private Equity Fund Management.
Who are Stellex Capital Management's main competitors?
Direct peers on record are Wynnchurch Capital, Platinum Equity, Pfingsten Partners, Sun Capital Partners, Centre Lane Partners, Olympus Partners, High Road Capital Partners, New Water Capital and KPS Capital Partners. The Carlyle Group is listed as a broad incumbent.
Does Stellex Capital Management have an API?
No public API is recorded for Stellex Capital Management.
What industry is Stellex Capital Management in?
Stellex Capital Management's product category is Private Equity Investment Management. Its primary akta.pro industry code is FSAAAGAG, Insurance General Accounts (Institutional Asset Owners). Its NAICS code is 523940 and its SIC code is 6282.