Stage FocusSeries B+
GeographyUS, Europe
TypePE
Last Activity2025
Industry Focus
Industries
MobilityClimate TechEnergy TechBuilt Environment
Technical BenchLimited
Investor TypeIndustrial Fund
ExposureMinimal DeepTech Investments
Bio
I Squared Capital is a major global infrastructure PE firm with $50B+ in AUM (November 2025). ISQ Fund III closed at $15.5B (2022). The portfolio spans 90+ companies across 70 countries with 66,000+ employees.
Focus areas include energy infrastructure, utilities, transport/logistics, digital infrastructure, and environmental/social infrastructure. Notable deals include Arriva (UK rail from Deutsc...
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