The London-headquartered manager raised over €2.7bn for its combined previous four vehicles.
Daniel Zinic, who will be based in London and join the firm early next month, had assisted Stonepeak in raising its debut fund in 2012 while working at placement agent FIRSTavenue.
The vehicle is already 45% invested and is targeting upper mid-teen returns from water assets and other 'essential' infrastructure.
We celebrate the managers, institutional investors and advisory firms considered by their peers to have been the standard bearers of the private infrastructure asset class.
The funds offer investors two strategies of varying risk and are targeting gross returns ranging between 9% and 14%.
Infrastructure has played a prominent role in the growth and diversification of manager portfolios, with the top 10 GPs raising $934bn over the past decade.
The latest round of fundraising for the Super Core series follows on from the close of Series 1 on €2.5bn in June 2018.
The vehicle’s £1.25bn target is the same figure as the hard-cap of its predecessor fund, which closed in November 2017.
The Swiss fund manager has already deployed roughly €93m through SEEF II, a fund that could be double the size of its predecessor should it reach its €400m hard-cap.
The fund has already made three investments, including its first bioenergy deals since hiring a team from Foresight Group last year.