What Quadrum Capital does

Quadrum Capital is an independent, entrepreneur-led Dutch private equity firm founded in 2012 and headquartered in Almelo with a second office in Woerden. The firm invests in established mid-market Dutch companies with EBITDA of €2.5 million or more that seek an active and involved shareholder, typically taking majority or controlling minority stakes alongside management teams. As of the most recent disclosures, Quadrum manages more than €920 million in committed capital across five funds: Quadrum Investment Fund I (€50M, 2013), QIF II (€90M, 2017), QIF III (€300M, 2020), QIF IV (€400M, 2022), and the structurally differentiated Evergreen Fund (€70M, 2023), which targets indefinite-duration, dividend-focused investments rather than traditional PE exits.

The firm's core differentiator is its investor base of more than 300 (former) entrepreneurs and entrepreneurial families, who provide both capital and an exclusive deal-sourcing, knowledge-sharing, and value-creation network. Quadrum employs a buy-and-build platform strategy, having assembled multi-company platforms in IT services (Interstellar — 11 companies, 700+ employees, €150M+ revenue), Microsoft Dynamics (Novature — 1,000+ partners across 75+ countries), human capital (Concreto Group, The Trainee Company), optics and contact lenses (Vision Group across five European countries), and high-tech manufacturing (KMWE). Standard fund lifecycles are 7–10 years, while the Evergreen Fund has indefinite duration and targets a minimum 6% annual net dividend. The firm charges management fees on its funds and earns carried interest from portfolio exits.

Quadrum has been EuVECA-labelled since August 2020 and obtained its AIFMD license under Dutch AFM supervision in January 2024, providing regulatory assurance to investors and enabling cross-EU fund marketing. The 25+ person team is led by Managing Partner Peter Oostenenk and partners with long track records in Dutch business and banking. Portfolio activity through 2024–2026 included the KMWE majority acquisition, Concreto Group platform creation, and mergers in optics (BrilGroup/ClearVision, LensOnline/Vision Group), alongside the divestiture of EMM International in January 2026 and the strategic partnership bringing Optegra into Iris Eye Clinics.

Name

Quadrum Capital

Legal name

Quadrum Beheer B.V.

Website

https://quadrum-capital.nl

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

11–50 employees

Short description

Quadrum Capital is an independent Dutch private equity firm founded in 2012 that manages over €920 million across five funds, investing in mid-market companies (EBITDA €2.5M+) through majority and controlling minority stakes, leveraging a network of 300+ entrepreneur-investors.

Ownership category

akta.pro rank

Product category

Private Equity Investment

NAICS

Portfolio Management and Investment Advice (523940), All Other Financial Investment Activities (52399)

SIC

Investment Advice (6282), Finance Services (6199)

akta.pro primary industry

Sustainable Private Markets (Impact PE/VC, Private Credit, Infrastructure) (FSAAALAG)

Keywords

• Private equity investing
• Mid-market buyouts
• Growth capital investments
• Buy-and-build strategies
• Evergreen fund management

Headquarters

HQ city

Almelo

HQ country

Netherlands

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Management fees from investment funds: Quadrum generates revenue through management fees charged on their investment funds (QIF I through IV and Evergreen Fund). The funds have defined investment periods and fund lifecycles of 7-10 years for standard investment funds, with the Evergreen Fund having indefinite duration.
2. Carried interest from fund investments: Returns generated through successful exits of portfolio companies, with carried interest structures typical of private equity fund models. The Evergreen Fund focuses on dividend distributions rather than exit-driven returns.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Quadrum Capital is an independent Dutch private equity firm that invests capital, expertise, and network into mature mid-market companies with EBITDA from €2.5 million. The firm operates multiple closed-end investment funds (QIF I-IV) plus a perpetual Evergreen Fund, taking majority or controlling minority stakes alongside management teams to support growth, buy-and-build strategies, and exits.

Differentiator

Problem solved

Functional benefit

Brands

• Quadrum Investment Fund I: First investment fund launched in 2013 with €50 million committed capital
• Quadrum Investment Fund II
• Quadrum Investment Fund III
• Quadrum Investment Fund IV
• Quadrum Evergreen Fund

Products and services

• Quadrum Investment Fund I (QIF I) First private equity fund from Quadrum Capital, providing growth capital to Dutch mid-market companies.
• Quadrum Investment Fund II (QIF II) Second private equity fund continuing the firm's strategy of partnering with entrepreneurs in the Dutch mid-market segment.
• Quadrum Investment Fund III (QIF III) Third private equity fund that closed at €300 million, reflecting the firm's established track record and investor base.
• Quadrum Investment Fund IV (QIF IV) Largest private equity fund in the firm's history, with €400 million target committed capital, targeting growth-focused mid-market investments.
• Quadrum Evergreen Fund (QEF) Evergreen fund with indefinite term and a minimum €3 million investment threshold, focused on sustainable investments in mature Dutch SMB companies and continuous value creation through dividend distributions, targeting a minimum 6% annual net dividend.

Quantifiable outcome

• Portfolio companies across 21 investments with focus on sustainable growth
• +2 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Seven partnerships are on record, tiered minor and core.

• Myerson (Corporate Team)minorImplementation/ SI/ Consulting Partner · 11 February 2026Myerson's corporate team provided legal advisory services for the Its Value Consultancy acquisition transaction, with Jonathan Garner and M Akeel Latif serving as legal advisors. Quadrum Capital served as the investment partner facilitating the deal.
• Vision GroupcoreStrategic or Co-development Partner · 1 June 2025Vision Group was formed in June 2025 through the merger of Swiss Vision Group and Belgian LensOnline (a Quadrum portfolio company since 2022). One of the largest European retailers in contact lenses, serving customers across Switzerland, Belgium, Netherlands, Germany, and Italy.
• The Trainee CompanycoreStrategic or Co-development Partner · 1 June 2023Formed in June 2023 through the merger of GoodtobeBetter, Fincade, and STRADIS under Quadrum's guidance. Specializes in traineeships for recently graduated talent across various fields including Business & IT, Finance & Control, Government & Policy, Data & Analytics, and Sales.
• Novature (Companial and DycoTrade merger)coreStrategic or Co-development Partner · 1 July 2022Quadrum Capital facilitated the merger of Companial and DycoTrade to form Novature in July 2022. Quadrum already owned DycoTrade and brought the two companies together to create a comprehensive Microsoft Dynamics partner platform supporting 1,000+ partners across 75+ countries.
• Concreto GroupcoreStrategic or Co-development Partner · 15 January 2022Concreto Group is a new growth platform within Quadrum Investment Fund IV, consisting of companies specializing in human capital including Siebert & Wassink, Ventiv Engineers, CoBuilders, and Target.
• InterstellarcoreStrategic or Co-development Partner · 1 February 2021Interstellar was launched in January 2021 as a platform company combining six IT companies. Quadrum Capital built this platform to create a comprehensive IT services provider. Now comprises 11 companies with 700+ employees and €150+ million revenue.
• Siebert & WassinkcoreChannel Partner/ Reseller/ DistributorSiebert & Wassink is a recruitment firm engaged by Quadrum Capital to handle the recruitment and selection process for the Associate position. This represents an ongoing channel partnership for talent acquisition across the organization.

Scale indicators9 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• Holland Capital: Amsterdam-based independent PE firm investing in Dutch mid-market companies with similar sector breadth and growth-equity orientation. Directly comparable in target company profile (€2.5M+ EBITDA Dutch SMBs) and active ownership style.
• Gimv: Belgian-listed PE investor with strong Benelux mid-market franchise and active buy-and-build playbook across multiple sectors. Comparable in fund size, regional focus and platform-building approach.
• Waterland Private Equity: Dutch/Belgian PE firm focused on mid-market buy-and-build across the Benelux and DACH region. Highly comparable in active ownership model, buy-and-build strategy and mid-market ticket size.
• Paragon Capital: Independent Dutch mid-market PE firm investing in established Dutch SMBs. Comparable in geographic focus, ticket size (lower mid-market) and active partnership approach with entrepreneurs.
• Bencis Capital Partners: Amsterdam-based independent PE firm investing in Benelux mid-market companies with active ownership. Comparable in target segment, regional focus and partner-led investment approach.
• Vendis Capital: Belgian mid-market PE firm focused on majority stakes in SMBs with growth ambitions. Comparable in ticket size, sector breadth and active shareholder model.

Regional players

• Nimbus Investments: Dutch investment firm with private equity activities in Dutch SMBs. Comparable regional focus and entrepreneur partnership model, though smaller in scale than Quadrum.

Broad incumbents

• IK Investment Partners: Pan-European mid-market PE firm with Nordic heritage and Benelux coverage. Comparable mid-market orientation and active ownership, but operates at significantly larger fund sizes.
• EQT Partners: Large global PE/VC platform with strong Nordic and European mid-market presence including Benelux. Comparable in active ownership and platform-building, but at vastly larger scale and with public-market visibility.

Emerging players

• Antler (Netherlands): While focused on earlier-stage ventures rather than mid-market PE, Antler overlaps with Quadrum in Dutch entrepreneur network access and content/events-based deal sourcing. Adjacent ecosystem participant rather than direct competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/quadrum-investment-fund

Revenue estimate

Valuation estimate

Number of profiles

Profiles23 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments4 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Quadrum Capital