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3I INVESTMENTS PLC

3I INVESTMENTS PLC is a Series C+, buyout and infrastructure fund in the US, Europe, United Kingdom, France, Italy and Germany writing $100M–$500M checks into Climate, Consumer, Healthcare, industrial, services-software, utilities, transportation, social-infrastructure and communications.

Stages
Series C+, buyout, infrastructure
Sectors
Climate, Consumer, Healthcare, industrial, services-software, utilities, transportation, social-infrastructure, communications
Check size
$100M–$500M
Invests in
US-wide, Europe, United Kingdom, France, Italy, Germany
Actively investing
Yes
Founded
1945
Assets under management
£38.7B
Website
3i.com

Thesis

3i Investments PLC is a British multinational private equity and infrastructure investment firm founded in 1945. The firm's investment strategy is divided into two main areas: Private Equity and Infrastructure. In Private Equity, 3i focuses on mid-market buyouts and growth capital investments in Europe and North America, targeting companies with enterprise values between €100 million and €500 million. Key sectors include Consumer & Private Label, Healthcare, Industrial, and Services & Software. Their strategy involves a 'buy-and-build' approach to enhance value through organic growth and acquisitions. In Infrastructure, 3i invests in utilities, transportation, and social infrastructure, with a concentration in the UK, France, Italy, Germany, and other parts of Europe, as well as North America. Focus areas include communications, energy, social infrastructure, transport & logistics, and utilities. 3i operates with a long-term, responsible approach, utilizing proprietary capital and co-investors, often taking significant stakes and board seats. As of March 31, 2026, their total AUM was £38.7 billion, with £25.6 billion in Private Equity and £3.9 billion in Infrastructure. The firm employs approximately 250 people and is headquartered in London, England.

Common questions

Does 3I INVESTMENTS PLC invest at the Series C+ stage?

Yes. 3I INVESTMENTS PLC lists Series C+, buyout and infrastructure among the stages it invests in.

What check size does 3I INVESTMENTS PLC write?

3I INVESTMENTS PLC writes $100M–$500M checks.

Where does 3I INVESTMENTS PLC invest?

3I INVESTMENTS PLC invests in the US, Europe, United Kingdom, France, Italy and Germany.

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