StepStone
US private-markets investment firm; investor in CuspAI's $450m Series B alongside new state-linked backers.
StepStone, the US private-markets investor, surfaced as a backer of CuspAI's $450m Series B when the round's fuller cap table emerged on 20 July 2026.
Last refreshed: 22 July 2026 · Appears in 1 active topic
Why is a private-markets giant investing alongside sovereign AI funds?
Timeline for StepStone
Mentioned in: State fund surfaces on CuspAI cap table
UK Startups and InnovationBackground
StepStone's stake in CuspAI came to light on 20 July 2026, when the round's cap table was disclosed in fuller form alongside two new state-linked participants, the Sovereign AI Unit and the Dutch fund Invest-NL.
StepStone is a US firm managing private-markets capital, spanning private equity, infrastructure and real assets, for institutional clients, investing both directly and through fund-of-funds structures.
Its position alongside sovereign and state-linked money in the same round illustrates how mainstream private-markets capital now sits shoulder to shoulder with government-backed vehicles in AI infrastructure and materials-Science deals.
