The Largest Infrastructure Investors
Infrastructure's top table starts in Sydney: Macquarie manages roughly $408B as of March 2025, and the ten largest managers now control more than half of top-100 assets.
Largest: Macquarie Asset Management (~$408B) · Top 100 managers: €2.52trn, up 13% in a year · Top 10 share: 52.4% of top-100 AUM
An infrastructure investor buys and operates the assets economies run on — transport, energy, utilities, digital networks — with long-dated institutional capital. This ranking follows the most recent published IPE Real Assets Top 100 survey, which counts infrastructure AUM as gross asset value plus committed capital, including uncalled commitments. Macquarie Asset Management leads at roughly $408 billion (€355 billion) as of 31 March 2025 and has topped the survey repeatedly, per IPE Real Assets. Brookfield follows at about $346 billion, with Global Infrastructure Partners, now part of BlackRock, third at roughly $188 billion after closing its $25.2 billion Fund V. Digital specialist DigitalBridge (~$106B), EQT Infrastructure (~$90B), and pension-owned IFM Investors (~$90B) complete the leading pack, ahead of KKR, Stonepeak, and Blackstone's dedicated infrastructure arm.
The survey measure explains most apparent discrepancies with firm marketing. IPE counts gross asset value plus committed capital, so its totals run above the equity or fee-bearing AUM firms cite themselves: Brookfield reports $255 billion of infrastructure assets against IPE's roughly $346 billion, and similar gaps recur down the table. The competitive story is consolidation and specialization at once. BlackRock's absorption of GIP pulled Blackstone's own infrastructure arm into the top ten, DigitalBridge built a $100 billion-plus platform on data centers, towers, and fiber alone, and Copenhagen Infrastructure Partners became the largest dedicated greenfield renewables manager. Reporting dates span 31 December 2024 to 31 March 2025, with select firm updates through early 2026, and currency conversion is approximate. Ongoing mega-fundraises may reorder the 2026 table.
Infrastructure has become institutional capital's growth engine. The top 100 managers now oversee more than €2.52 trillion, up 13% in a year and nearly double the €1.3 trillion of five years earlier, per IPE Real Assets' 2025 survey. Concentration is rising with the total: the ten largest hold €1.32 trillion, or 52.4% of top-100 assets, up from 50.9% the year before. Managers point to energy transition and digitalization as the biggest opportunities, and to geopolitical uncertainty and regulation as the biggest risks. The fundraising pipeline remains heavy — closed-ended infrastructure funds are seeking an estimated $474 billion globally, $143 billion of it for the top ten managers alone. Every firm below links to its Altss profile, where funds, leadership, and activity are tracked.
Largest Infrastructure Investors: by the numbers
- Macquarie Asset Management leads at roughly $408B (€355B) as of 31 March 2025, topping IPE Real Assets' survey once again.
- The top 100 infrastructure managers oversee more than €2.52trn, up 13% year over year and nearly double the total of five years ago, per IPE Real Assets.
- The ten largest managers hold €1.32trn — 52.4% of top-100 assets, up from 50.9% a year earlier, per IPE Real Assets.
- Global Infrastructure Partners closed Fund V at $25.2 billion in 2025, above its $25bn target, per Infrastructure Investor.
- Closed-ended infrastructure funds are seeking an estimated $474 billion globally, $143 billion of it for the top ten managers, per With Intelligence's 2026 outlook.
- EQT closed EQT Infrastructure VI at its €21.5B hard cap in 2025, with €21.3B fee-generating, per the firm.
Largest Infrastructure Investors
IPE Real Assets Top 100 Infrastructure Investment Managers 2025 (data primarily 31 Dec 2024 / 31 Mar 2025; published July/August 2025); select firm updates through Q1 2026
Ordered by infrastructure AUM as counted by IPE Real Assets: gross asset value of managed assets plus committed capital, including uncalled. Firm-reported equity or fee-bearing AUM, noted where it differs, typically runs lower.
| # | Firm | AUM (USD) | Headquarters |
|---|---|---|---|
| 1 | Macquarie Asset ManagementGlobal core/value-add infrastructure (transport, energy, utilities, digital); repeatedly tops IPE rankings and closed Macquarie Infrastructure Partners VI at $6.8B in 2025. | ~$408B (€355B) | Sydney, Australia |
| 2 | Brookfield Asset ManagementOne of largest global infra owners/operators across utilities, transport, midstream, data; firm site cites $255B infra AUM with 300+ professionals and 63k+ operating employees. | ~$346B (€301B); firm reports $255B | Toronto, Canada |
| 3 | Global Infrastructure Partners (BlackRock)Leading complex assets platform (energy, transport, digital, water) fully integrated into BlackRock; closed GIP V at $25.2B and reports ~$170B managed AUM. | ~$188B (€163B); firm ~$170B | New York, USA |
| 4 | DigitalBridgeSpecialist digital infrastructure (data centers, towers, fiber, edge); firm reports $119B AUM as of Mar 2026 and closed DBP III at $11.7B total commitments. | ~$106B (€92B); firm $119B | Boca Raton / New York, USA |
| 5 | EQT InfrastructureValue-add and active core infrastructure with thematic focus; closed EQT Infrastructure VI at hard-cap €21.5B (fee-generating €21.3B) in 2025. | ~$90B (€79B) | Stockholm, Sweden |
| 6 | IFM InvestorsPension-fund owned core infrastructure equity (airports, ports, energy, digital) primarily OECD; reports US$89.1B infrastructure equity AUM serving 849 institutions. | ~$90B (€78B); firm US$89.1B equity | Melbourne, Australia |
| 7 | KKR InfrastructureGlobal multi-sector infrastructure (utilities, energy, digital, transport); firm reports ~$107B infra AUM as of Mar 2026 across strategies with ~160 dedicated executives. | ~$88B (€77B); firm $107B | New York, USA |
| 8 | StonepeakIndependent specialist in infrastructure and real assets (digital, energy transition, transport); firm reports ~$88B AUM as of Dec 2025; Fund V targeting large raise. | ~$77B (€67B); firm ~$88B | New York, USA |
| 9 | Blackstone Infrastructure PartnersCore and opportunistic infrastructure within broader alts platform; entered top 10 after GIP-BlackRock consolidation per IPE. | ~$63B (€55B) | New York, USA |
| 10 | Allianz Global InvestorsDiversified infra strategies including equity and debt within large insurance-linked asset manager. | ~$62B (€54B) | Munich, Germany |
| 11 | Ardian InfrastructureEssential European and Americas infrastructure plus energy transition; firm cites ~$45-47B infra AUM and large Fund VI raise activity. | ~$52B (€45B); firm ~$45-47B | Paris, France |
| 12 | I Squared Capital (ISQ)Independent mid-market global infrastructure (energy, utilities, transport, telecom); firm reports $50-60B+ AUM across Americas, Europe, Asia. | ~$44B (€38B); firm $50-60B | Miami, USA |
| 13 | Antin Infrastructure PartnersActive value-creation private equity-style infrastructure (energy/environment, digital, transport, social); AUM €33B+ with Flagship V final close above target. | ~$38B (€33B); firm €33B+ | Paris, France |
| 14 | Copenhagen Infrastructure Partners (CIP)World's largest dedicated greenfield renewables/energy infrastructure fund manager; manages ~€37B across 15 funds with large CI V close. | ~$36B (€31B); firm ~€37B raised | Copenhagen, Denmark |
| 15 | EIGSpecialist private energy and energy-related infrastructure investor; reports ~$25.4B AUM as of Dec 2025 with long track record in midstream/upstream/renewables. | ~$26B (€22B); firm ~$25B | Washington, D.C., USA |
| 16 | MeridiamLong-term sustainable public infrastructure (mobility, critical services, low-carbon) across Europe, Africa, Americas; ~€23-24B AUM and 100+ projects. | ~$24B (€21B); firm ~$23B / €23-24B | Paris, France |
| 17 | ActisSustainable infrastructure focused on growth markets (now part of General Atlantic platform); reports US$16-19B range AUM post-integration. | ~$12B (€11B); firm ~$16-19B | London, UK |
Figures follow the most recent published IPE Real Assets Top 100 survey, with data primarily as of 31 December 2024 and 31 March 2025 and select firm updates through early 2026. IPE's gross-value-plus-commitments measure exceeds the equity or fee-bearing AUM firms report themselves, which explains the dual figures in the value column. Euro-dollar conversion is approximate (about 1.15), and the BlackRock-GIP integration plus ongoing flagship raises may reorder the 2026 table.
How IPE counts infrastructure AUM
Managers are ordered by infrastructure AUM as defined by IPE Real Assets: total gross asset value of managed assets plus committed capital, including uncalled. Data primarily reflects 31 December 2024 or 31 March 2025 figures from the most recent published survey, with select firm updates through the first quarter of 2026.
Firm-reported equity or fee-bearing AUM typically sits below the survey measure, and strategy scope varies — some platforms fold renewables, digital, and debt into the total. Currency conversion uses an approximate 1.15 EUR-USD rate.
Largest Infrastructure Investors — common questions
What is the largest infrastructure investor by AUM?
Why does Brookfield's figure here differ from what Brookfield reports?
How did BlackRock become an infrastructure giant?
Is IFM Investors a fund manager or a pension fund?
Follow the money in infrastructure
Altss maintains a live profile for every manager on this list, spanning funds, leadership, and activity, alongside coverage of 30,000+ institutional investors, RIAs, and family offices.