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ARCLINE INVESTMENT MANAGEMENT LP

ARCLINE INVESTMENT MANAGEMENT LP is a Series C+ and buyout fund in the US, Europe and Canada writing up to $300M checks into defense-aerospace, industrial-technology, life-sciences, energy-transition, specialty-materials, critical-infrastructure-services, medical-technology, industrial-goods-manufacturing, personal-care and medical-products.

Stages
Series C+, buyout
Sectors
defense-aerospace, industrial-technology, life-sciences, energy-transition, specialty-materials, critical-infrastructure-services, medical-technology, industrial-goods-manufacturing, personal-care, medical-products
Check size
up to $300M
Invests in
US-wide, Europe, Canada
Round role
Leads rounds
Actively investing
Yes
Founded
2018
Assets under management
$30B+

Thesis

Arcline Investment Management LP is a growth-oriented private equity firm founded in 2018, specializing in acquiring and building niche, technology-driven industrial businesses. Their investment thesis centers on identifying and investing in market-leading companies with persistent demand, limited disruption risk, and fragmented industry structures, aiming for long-term value creation through consolidation and platform building. The firm targets sectors such as Defense and Aerospace, Industrial Technology, Life Sciences, Energy Transition, Specialty Materials, Critical Infrastructure Services, Medical Technology, Industrial Goods and Manufacturing, Personal Care, and Medical Products. Arcline focuses on growth and buyout investments in mid-market companies, engaging in control buyouts, early-stage, and growth investments. They invest across North America, Europe, Canada, and the United States, primarily taking lead investment roles in control buyouts, but also participating in co-investments and PIPE transactions. As of June 2026, Arcline manages over $30 billion in assets under management, with its fourth flagship fund, Fund IV, closing at $6 billion in October 2025. Their first fund closed at $1.5 billion in 2019, Fund II at $2.75 billion in 2021, and Fund III at $4.5 billion in 2023. Their first fund targeted equity investments of up to $300 million in companies generating up to $1 billion in revenue and $125 million in EBITDA.

Common questions

Does ARCLINE INVESTMENT MANAGEMENT LP invest at the Series C+ stage?

Yes. ARCLINE INVESTMENT MANAGEMENT LP lists Series C+ and buyout among the stages it invests in.

What check size does ARCLINE INVESTMENT MANAGEMENT LP write?

ARCLINE INVESTMENT MANAGEMENT LP writes up to $300M checks.

Where does ARCLINE INVESTMENT MANAGEMENT LP invest?

ARCLINE INVESTMENT MANAGEMENT LP invests in the US, Europe and Canada.

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