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M&A Transaction•

Ardian Increases Stake in Heathrow Airport to 32.6% - InforCapital

Ardian increases its stake in Heathrow Airport to 32.6%, becoming the largest shareholder and reinforcing its commitment.

AM
Alvaro de la Maza

Partner at Aninver

Key Takeaways

  • Sector: Transport Infrastructure & Services (traditional).
  • Geography: United Kingdom.

Analysis

Ardian, a leading global private investment house, has increased its ownership in Heathrow Airport to 32.6% following the acquisition of an additional 10% stake from Ferrovial SE, La Caisse (formerly CDPQ), and the Universities Superannuation Scheme (USS). This move solidifies Ardian's position as the airport’s largest shareholder.

The transaction, valued at approximately £887.5 million, marks Ardian’s second major investment in Heathrow within a year, following its initial acquisition of a 22.6% stake in December 2024. The deal underscores Ardian’s long-term commitment to investing in essential UK infrastructure.

Mathias Burghardt, Executive Vice President and Head of Infrastructure at Ardian, stated, “Since becoming the largest shareholder of Heathrow in December, the airport has continued to perform strongly with traffic reaching 83.9 million passengers in 2024. We are delighted to work with our fellow shareholders, the Heathrow management team, and the UK authorities to deliver sustainable growth of this iconic infrastructure.”

Heathrow Airport has experienced a surge in demand, recording all-time passenger highs in several months of 2025. The airport is also embarking on a multi-billion-pound investment program aimed at upgrading and expanding its facilities to meet future demands and support the UK Government’s economic and net-zero ambitions.

Ardian’s increased stake in Heathrow aligns with its broader strategy of investing in critical infrastructure assets that provide essential services and have the potential for long-term value creation. The firm has a strong track record in the transportation sector, having previously held a 49% stake in London Luton Airport and investments in several Italian airports, including Milan Linate, Milan Malpensa, Naples, and Turin.

The completion of this transaction is subject to customary regulatory approvals and the right of first offer provisions outlined in Heathrow’s shareholder agreements.