Diamond Infrastructure Solutions Valuation, Funding & Investors

Diamond Infrastructure Solutions is valued at $6B as of September 2025.

Last Diamond Infrastructure Solutions valuation

$6B

Secondary · Sep 2025

Key investors in Diamond Infrastructure Solutions

  • Macquarie Asset Management

Diamond Infrastructure Solutions Overview

About Diamond Infrastructure Solutions

Diamond Infrastructure Solutions is a Houston-headquartered operator of energy midstream assets in the U.S. Gulf Coast. It provides rail, truck, and marine terminals for liquids handling, storage, and blending serving refineries and producers.


Founded

2023

HQ

United StatesHouston, TX

Status

Privately held

Customer focus

B2B

Revenue model

Usage-based

Valuation

$6B (Sep 2025)

Diamond Infrastructure Solutions Valuation

Diamond Infrastructure Solutions is currently valued at $6B, based on its secondary sale in September 2025.

The $540M round was led by Macquarie Asset Management.

Diamond Infrastructure Solutions' valuation has moved from $6B at its secondary sale in December 2024 to $6B in September 2025, across 2 priced rounds.

Diamond Infrastructure Solutions valuation by funding round

Diamond Infrastructure Solutions valuation by funding round
DateStageValuation
Sep 2025Secondary$6B
Dec 2024Secondary$6B

Diamond Infrastructure Solutions Funding History

Diamond Infrastructure Solutions has 2 recorded secondary share sales and no primary funding rounds.

Diamond Infrastructure Solutions funding rounds

Diamond Infrastructure Solutions funding rounds
DateStageInvestorsRaisedValuationDeal Summary
Sep 2025SecondaryMacquarie Asset Management (lead)$540M$6BDiamond Infrastructure Solutions is a specialist infrastructure provider operating dedicated non-product-producing assets (power generation, steam production, pipelines, environmental operations, and site infrastructure) across five U.S. Gulf Coast manufacturing sites owned by Dow Inc.: Freeport, Texas City, and Seadrift in Texas, as well as Plaquemine and St. Charles in Louisiana. The company serves Dow and over 70 other industrial customers with pipeline and storage connectivity to major natural gas, NGL, and olefin hubs. In September 2025, Macquarie Infrastructure Partners VI (MIP VI), a fund managed by Macquarie Asset Management, exercised a previously announced option to increase its minority equity stake in Diamond from 40% to 49%, acquiring an additional 9% for $540 million. This brought total transaction proceeds to approximately $3.0 billion, with Dow retaining operational management and majority ownership at 51%. The transaction was structured around an implied company valuation of approximately $6 billion. Diamond was established as a joint venture between Macquarie Asset Management and Dow, representing a strategic carve-out that positioned the infrastructure assets as an independent, customer-focused platform. Within four months of launch, the company had attracted multiple new unaffiliated customers beyond Dow, positioning itself as the premier chemical park operator in North America. Recent strategic initiatives demonstrate Diamond's expansion into sustainability-focused infrastructure. The company partnered with Danish climate tech startup Again to host the first U.S.-based CO₂ transformation facility at its Texas City site and secured an exclusive partnership with Third Pillar Solar for potential deployment of up to 500 MW of floating solar capacity across Diamond's reservoir systems. These developments reflect the company's commitment to advancing sustainable infrastructure solutions while maintaining operations serving the energy, environment, infrastructure, and pipelines sectors.
Dec 2024SecondaryMacquarie Asset Management (lead)$2.4B$6BDiamond Infrastructure Solutions is a dedicated infrastructure company managing select U.S. Gulf Coast assets, including pipelines, power, and steam generation plants serving five Dow manufacturing sites in Texas and Louisiana. It provides services across energy, environment, infrastructure, and pipelines to over 70 customers, with Dow retaining majority ownership and operational control. The company has pursued sustainable initiatives, such as partnering with Again for a CO₂ transformation facility in Texas City and with Third Pillar Solar for up to 500 MW of floating solar. Macquarie Asset Management, through a managed fund, acquired an initial 40% minority equity stake in December 2024, providing Dow with approximately $2.4 billion in proceeds upon closing in May 2025. Macquarie exercised its option to increase the stake to 49% in September 2025, delivering an additional $540 million to Dow and bringing total proceeds to approximately $3 billion. One source describes the partnership as launching a $6 billion Diamond Infrastructure Solutions. The transaction unlocks value from Dow's non-core assets, enabling Diamond to focus on growth, efficiencies, and new customer acquisition while benefiting both Dow and Macquarie through profitable expansion.

Who has invested in Diamond Infrastructure Solutions?

1 investor has backed Diamond Infrastructure Solutions across its funding rounds, including Macquarie Asset Management.

Lead investors include Macquarie Asset Management.


Diamond Infrastructure Solutions Investors

Investors in Diamond Infrastructure Solutions by funding rounds participated
InvestorHQRoundsRoleFirst check

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Diamond Infrastructure Solutions Competitors

Diamond Infrastructure Solutions competitors include listed companies like Nakilat, Royal Vopak, Plains GP Holdings and International Seaways, and private ones like 50Hertz and Joulent.

Public and private companies comparable to Diamond Infrastructure Solutions
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
50HertzGermanyGermanyPrivate--$6B-
NakilatQatarQatarPublicly listed$1.1B$963M$6.2B9.9x
Royal VopakNetherlandsNetherlandsPublicly listed$1.5B$1.3B$6.3B6.4x
Plains GP HoldingsUnited StatesUnited StatesPublicly listed$44B$2.8B$5.5B0.5x
International SeawaysUnited StatesUnited StatesPublicly listed$843M$508M$5.5B4.7x
JoulentUnited StatesHouston, TXPrivate--$5B-

Diamond Infrastructure Solutions Public Comps

Diamond Infrastructure Solutions is still privately-owned, but its public comps include Nakilat, Royal Vopak, Plains GP Holdings, International Seaways, Archrock, Torrent Power, Golar LNG, Hess Midstream, Transportadora de Gas del Sur and South Bow.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Nakilat$1.1B$963M10.2x9.9x11.8x14.3x
Royal Vopak$1.5B$1.3B6.5x6.4x7.4x8.4x
Plains GP Holdings$44B$2.8B0.6x0.5x9.6x9.3x
International Seaways$843M$508M6.8x4.7x11.3x6.6x
Archrock$1.5B$850M5.3x5.2x9.2x8.9x
Torrent Power$3B$595M2.7x2.4x13.4x12.2x
Golar LNG$394M$152M18.0x17.3x46.6x23.7x
Hess Midstream$1.6B$1.2B5.4x5.4x7.0x7.0x

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Common questions about Diamond Infrastructure Solutions

When was Diamond Infrastructure Solutions founded?Diamond Infrastructure Solutions was founded in 2023.
Where is Diamond Infrastructure Solutions headquartered?Diamond Infrastructure Solutions is headquartered in Houston, TX, United States.
Is Diamond Infrastructure Solutions publicly listed?No, Diamond Infrastructure Solutions is a private, VC-backed company.
What is Diamond Infrastructure Solutions' valuation?Diamond Infrastructure Solutions was last valued at $6B in its secondary sale in September 2025.
Who are Diamond Infrastructure Solutions' investors?Diamond Infrastructure Solutions' investors include Macquarie Asset Management.
Which companies are comparable to Diamond Infrastructure Solutions?Companies comparable to Diamond Infrastructure Solutions include 50Hertz, Nakilat, Royal Vopak, Plains GP Holdings, International Seaways and Joulent.

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