AMERICAN TRIPLE I, LLC
AMERICAN TRIPLE I, LLC is a Series C+ and buyout fund in the US investing in transportation, digital-infrastructure, social-infrastructure, community-infrastructure, water-management, energy-transition, power-generation, power-storage, education and healthcare-facilities.
- Stages
- Series C+, buyout
- Sectors
- transportation, digital-infrastructure, social-infrastructure, community-infrastructure, water-management, energy-transition, power-generation, power-storage, education, healthcare-facilities
- Invests in
- US-wide
- Round role
- Leads rounds
- Actively investing
- Yes
- Founded
- 2019
- Assets under management
- $832.2M
- Website
- atipartners.com
Check size not disclosed
Thesis
American Triple I, LLC (ATI) is a New York-based private equity firm founded in 2019, specializing in infrastructure. They operate as a private equity fund manager and registered investment adviser. They target sectors with strong secular growth or significant capital needs for upgrade and modernization, such as transportation (public transit, airports, parking, cargo), digital infrastructure (fiber, broadband, smart city solutions), and social/community infrastructure (water management, energy transition, distributed power, microgrids, power storage, education, R&D, healthcare facilities). ATI utilizes a differentiated sourcing strategy, leveraging principal relationships with U.S. cities and municipalities for middle-market transactions and partnering with developers on Public-Private Partnership (P3) opportunities. As of March 31, 2026, ATI reported approximately $832.2 million in regulatory AUM, managing two private funds with a combined GAV of $432.2 million. In 2024, they raised USD 400 million and are managing or advising on a total of USD 800 million in strategic capital. The firm invests across the U.S. and focuses on growth or mature stage projects requiring capital for expansion or upgrades.
Common questions
Does AMERICAN TRIPLE I, LLC invest at the Series C+ stage?
Yes. AMERICAN TRIPLE I, LLC lists Series C+ and buyout among the stages it invests in.
Where does AMERICAN TRIPLE I, LLC invest?
AMERICAN TRIPLE I, LLC invests in the US.