Argo Affiliate Acquires Macquarie Infrastructure Holdings (MIC)

Argo Infrastructure Partners Increases Stake in TierPoint

December 14, 2025

Infrastructure

Argo Infrastructure Partners acquired the equity interests held by the majority of TierPoint's minority shareholders, further increasing Argo's ownership in the data center platform; financial terms were not disclosed and the transaction has closed. The move brings total capital formation under Argo's ownership to $3.0 billion and is intended to deepen support for TierPoint's national expansion of its 40 data centers across 20 markets and continued financing strategy.

Macquarie-led Consortium Acquires 88% Stake in AirTrunk

April 8, 2020

Infrastructure

A consortium led by Macquarie Asia Infrastructure Fund 2 (MAIF2), managed by Macquarie Infrastructure and Real Assets (MIRA), has closed financial close to acquire an 88% stake in AirTrunk, valuing the company at more than A$3 billion. The stake was purchased from Goldman Sachs, Sixth Street Partners and founder Robin Khuda, who will retain a material stake and remain CEO; the investment will accelerate AirTrunk's planned expansion across the Asia-Pacific.

Macquarie Asset Management and Ontario Teachers' Acquire 31.6% Stake in Puget Holdings

February 22, 2022

Energy

Macquarie Asset Management (via Macquarie Global Infrastructure Fund) and Ontario Teachers' Pension Plan Board closed the acquisition of a 31.6% stake in Puget Holdings from CPP Investments. The stake gives the investors ownership in Puget's primary operating subsidiary, Puget Sound Energy (PSE), a regulated electric and natural gas utility serving customers in Washington State; the deal follows regulatory approvals and reflects buyers' interest in core infrastructure and the clean-energy transition.

Macquarie Asset Management Acquires Minority Stake in Dow's U.S. Gulf Coast Infrastructure to Launch Diamond Infrastructure Solutions

December 9, 2024

Infrastructure

A fund managed by Macquarie Asset Management agreed to acquire a 40% minority equity stake (with an option to increase to 49%) in select U.S. Gulf Coast infrastructure assets of Dow Inc., forming a new joint-venture platform called Diamond Infrastructure Solutions. The assets—site utilities, power and steam production, pipelines, environmental operations and storage—span five Dow sites in Texas and Louisiana; the transaction provides Dow with cash proceeds (approximately $2.4bn initially, up to ~$3.0bn if Macquarie increases to 49%) and creates a specialist infrastructure operator to serve Dow and third-party industrial customers.

Macquarie Infrastructure Partners Acquires RailUSA, LLC

May 12, 2022

Transportation

Macquarie Infrastructure Partners (MIP) acquired 100% of the equity interests of RailUSA, LLC, the U.S. holding company operating the 430-mile Florida Gulf & Atlantic Railroad and the 228-mile Grenada Railroad. RailUSA provides freight rail services, transloading, railcar storage and industrial development opportunities; Sidley represented MIP in the transaction.

Macquarie Asset Management Acquires 50% Stake in Last Mile Infrastructure Group from Infracapital

December 20, 2023

Utilities

Macquarie Asset Management (via Macquarie European Infrastructure Fund 7) has acquired a 50% stake in Last Mile Infrastructure Group from Infracapital, with Infracapital retaining the remaining 50%. Last Mile, one of the UK’s largest independent network owners that designs, builds, owns and operates last-mile electricity, gas, water and wastewater networks, will benefit from the partnership to support growth and energy-transition opportunities across the UK. The transaction remains subject to regulatory approvals.