JPMorgan report finds AI and energy are driving cross-border M&A to record levels, with US-UK transatlantic deals accounting for six of the ten largest transactions in H1 2026
A JPMorgan report published on 4 August 2026 identifies artificial intelligence and energy infrastructure as the two dominant forces driving a sharp acceleration in cross-border M&A activity, with total cross-border deal value surging 63% year-on-year to $820 billion in the first half of 2026, representing 26% of total M&A volume globally. Deal activity was concentrated in larger transactions: 17 of the 48 so-called mega-deals (large transactions of significant scale) were cross-border, contributing 37% of total cross-border volume. Critically for readers in the London market, six of the ten largest deals were transatlantic, with the US and UK identified as the key cross-border M&A corridor. European buyers are targeting US assets to diversify growth and access innovation, while deals involving European targets are focused on consolidation and building regional champions. The energy and power sector features alongside technology, financials, and AI as a primary driver. Four of the top five global deals in H1 2026 were linked to AI and its growing infrastructure needs, including data centres, power, cooling, networks, and enabling software. AI-linked stake sales including major funding rounds for frontier AI model platforms totalled $370 billion during the first half, with six mega-funding rounds alone accounting for approximately 40% of minority investment volume. The report explicitly flags that macro volatility, including trade policy uncertainty, energy price movements, and interest rate dynamics, continues to weigh on traditional M&A alongside the high urgency driven by what JPMorgan describes as a 'fear of missing out' dynamic among strategic buyers.
Why this matters
The JPMorgan data confirms that the US-UK transatlantic corridor remains the primary engine of large-cap cross-border deal flow, which is directly relevant to City firms competing for mandates. The identification of energy alongside AI as a structural deal driver is significant: it means that energy infrastructure transactions are not cyclical but are being treated by acquirers as strategically critical assets tied to AI compute demand, data centre power needs, and supply-chain resilience. For London practices, the 63% surge in cross-border volume means deal teams are under sustained pressure from both volume and complexity, with more multi-jurisdictional regulatory clearance processes to navigate. The geopolitical dimension, including protectionist policies widening valuation gaps and reshaping deal corridors toward 'friendshoring' (redirecting supply chains toward allied-country partners), adds a layer of regulatory risk advisory to every large cross-border mandate.
On the Ground
The transatlantic dominance of large-cap deals generates sustained demand for US and UK dual-qualified M&A teams, cross-border regulatory clearance counsel (covering CMA, FTC, and DOJ filings), and energy sector specialists who can assess grid connection, planning, and licencing conditions for infrastructure assets. A trainee embedded in a cross-border M&A team would be preparing conditions precedent (CP) checklists tracking regulatory clearances across multiple jurisdictions, coordinating local counsel instruction letters for filings in US, EU, and UK regulatory bodies, drafting choice-of-law summaries for the governing-law provisions of the transaction documents, and indexing due diligence reports on target energy assets.
Interview prep
Question you might get
“How do foreign investment screening regimes in the UK and US affect the timeline and structure of a large transatlantic energy or technology acquisition?”
Sign up free to see the full answer
A model answer you can lift into an interview — how to frame this story for a partner.
Sign up freeSources
My notes
saved