In March 2017, Stonepeak acquired Cologix.
In November 2020, Stonepeak acquired Astound Broadband from TPG Inc. for $3.6 billion in cash along with $4.5 billion in debt.
In November 2022, Stonepeak and Spirit Super acquired the Port of Geelong in a $732 million deal.
In April 2021, Stonepeak teamed up with EQT AB to acquire KPN but in May, KPN rejected the deal.
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In October 2021. Stonepeak acquired Teekay LNG in a $6.2 billion deal.
In May 2022, Stonepeak teamed up with Blackstone Inc.’s Blackstone Real Estate Income Trust and the Cherng Family Trust (Panda Restaurant Group) to acquire the Cosmopolitan of Las Vegas for $5.65 billion.
In March 2024, Stonepeak completed the acquisition of Textainer, a Bermuda-based lessor of intermodal shipping containers, taking the company private. Textainer common shareholders received $50.00 per share in cash, valuing the common equity at approximately $2.1 billion and giving the transaction an enterprise value of about $7.4 billion.
In April 2025, it was announced that Stonepeak and KKR had agreed to buy Assura plc (AGRP), a UK-listed real estate company, in a deal worth £1.6 billion. Primary Health Properties (PHP) submitted a competing bid worth £1.79 billion, which was accepted by AGRP shareholders in August 2025.
In April 2025, Stonepeak acquired Air Transport Services Group (ATSG), an aircraft lessor and air cargo operator, in an all-cash deal valued at approximately $3.1 billion including debt. ATSG leases midsize freighters and flies cargo and passenger charters through subsidiaries including ABX Air, Air Transport International, and Omni Air International, which operates deportation flights under subcontracts with U.S. Immigration and Customs Enforcement.
In May 2025, Stonepeak and Energy Equation Partners announced an agreement to acquire a 65% interest in Phillips 66's Germany and Austria retail marketing business, operator of the JET-branded service station network, in a transaction valuing the business at an enterprise value of approximately €2.5 billion. Phillips 66 retained a 35% non-operated interest through the newly formed joint venture. The transaction closed on December 1, 2025.
In December 2025, it was announced Stonepeak had agreed to acquire a 65 per cent majority controlling stake in Castrol from BP, valuing the lubricants business at an enterprise value of approximately US$10.1 billion. BP will retain a 35 per cent minority interest, while the Canada Pension Plan Investment Board will invest up to US$1.05 billion for an indirect stake in the transaction. The acquisition is subject to regulatory approvals and is expected to complete by the end of 2026.
In January 2026, Stonepeak struck a deal with CMA CGM to create a US-based port venture valued around $10 billion. Stonepeak agreed to make a $2.4 billion investment for a 25% stake in the venture, to be known as United Ports.
On March 11, 2026, Alphabet Inc. and Stonepeak announced an agreement to combine Google Fiber (GFiber) with Stonepeak's Astound Broadband. The combined company will be majority-owned by Stonepeak, with Alphabet retaining a "significant minority" stake, and will be led by GFiber's existing management team. Financial terms were not disclosed; the transaction is expected to close in the fourth quarter of 2026, subject to regulatory approval.
