Macquarie Infrastructure Partners VI increases equity stake in Diamond Infrastructure Solutions to 49%
Type: Acquisition · Technology: Industrial · Country: United States · Value: $2.4B · Announced: 2025-09-02
Macquarie Infrastructure Partners VI (MIP VI) exercised its option to increase its equity stake in Diamond Infrastructure Solutions to 49%, building on its initial 2022 investment. Diamond Infrastructure.
Analysis
Macquarie Infrastructure Partners VI has exercised its option to increase its equity stake in Diamond Infrastructure Solutions to 49%, building on its initial 2022 investment. This $2.4 billion acquisition deepens MIP VI's commitment to the US industrial sector, specifically in specialized services and technology solutions for infrastructure projects. The move allows the $6.9 billion fund to expand its influence within an asset that aligns with its core infrastructure mandate, which includes transportation and utilities. This pre-planned stake increase suggests a strong performance or strategic alignment since the initial 2022 investment. The deal structure, involving an option exercise, provides a clear growth trajectory for MIP VI's involvement in Diamond Infrastructure Solutions. This transaction further solidifies Macquarie's position as a leading global infrastructure investor through Macquarie Asset Management. For Dow Inc., a global materials science leader with $44.6 billion in 2023 revenue, divesting a portion of Diamond Infrastructure Solutions allows for potential capital redeployment across its 100+ manufacturing sites. Sidley Austin LLP, a global law firm with over 2,300 lawyers and annual revenue exceeding $3 billion, provided legal counsel to the buyer. BMO Capital Markets, offering expertise in infrastructure M&A, also advised the buyer on this significant US industrial deal. The continued investment from a $6.9 billion fund like MIP VI into specialized industrial service providers in the US indicates sustained private capital interest in critical infrastructure support.
Key points
- Macquarie Infrastructure Partners VI, a $6.9 billion fund, increased its stake to 49% in Diamond Infrastructure Solutions.
- The $2.4 billion deal value for a 49% stake implies a total valuation of approximately $4.9 billion for Diamond Infrastructure Solutions.
- Dow Inc., a global materials science leader with $44.6 billion in 2023 revenue, is the seller.
- Sidley Austin LLP, a global law firm with over 2,300 lawyers and $3 billion+ annual revenue, provided legal counsel to the buyer.
- The transaction, announced on 2025-09-02, builds on an initial investment made by MIP VI in 2022.
Counterparties
- Sidley Austin LLP (Legal Buy)
- Macquarie Capital (Buyer)
- BMO Capital Markets (Advisor Buy)
- Dow Inc. (Seller)
- Diamond Infrastructure Solutions (Parent Company)
- Macquarie Infrastructure Partners VI (Buyer)