Publications

WSIB plans $600m of investments for I Squared’s latest global infra fund, sidecar
Investors - SEPTEMBER 22, 2025

To read this full article you need to be subscribed to Newsline.

Sign in Sign up for a FREE subscription

WSIB plans $600m of investments for I Squared’s latest global infra fund, sidecar

by Kali Persall

The Washington State Investment Board (WSIB) is committing $500 million to ISQ Global Infrastructure Fund IV and an additional $100 million to a co-investment sidecar.

ISQ Global Infrastructure Fund IV, managed by I Squared Capital, will focus on value-added infrastructure opportunities in the upper-middle market. The vehicle has a target fund size of $15 billion.

The investments will follow the WSIB’s $200 million commitment to ISQ Cube Hydro Co-Investment Fund, a $250 million commitment to ISQ Global Infrastructure Fund II, a $25 million co-investment in I Squared Transportation Europe II, a $350 million commitment to ISQ Global Infrastructure Fund III and a $150 million commitment to ISQ Co-Investment Fund III (Orcas).

Forgot your username or password?