AI megadeals, IPO green shoots, and a middle-market squeeze: The new M&A reality for CFOs

PwC’s U.S. Deals 2026 Outlook shows a clear M&A rebound in 2025 with 10,333 deals totalling $1.6 trillion through Nov. 30—deal value up about 45% year‑over‑year—and 74 megadeals (>$5bn) of which more than 20% were AI‑driven, while private‑equity activity rose modestly (financial‑buyer volume +4% to 1,484 deals) and M&A value to PE buyers jumped to $536bn (+54%). The report highlights AI megadeals and renewed PE appetite (and an H2 IPO rebound) as the primary catalysts, but flags a decade‑low middle market (≈496 deals) constrained by macro headwinds and valuation gaps that are impeding exits. PwC and corporate CFOs say the upswing is fragile and conditional—stabilising trade policy, lower rates and sustained AI investment could extend the recovery—while strategic, disciplined buys (e.g., Workday’s ~$1.1bn acquisition of Sana) exemplify how buyers are targeting AI capabilities amid persistent cost and supply‑chain pressures.

Analysis

PwC's U.S. Deals 2026 Outlook documents a clear M&A rebound in 2025 with 10,333 deals totaling $1.6 trillion through Nov. 30, 2025, and aggregate deal value up roughly 45% year‑over‑year. The market saw 74 megadeals (>$5 billion), the most since 2021, with more than 20% AI‑driven; cited examples include Alphabet's ~$32 billion Wiz deal, Meta's ~$14.8 billion Scale AI stake, and CoreWeave's ~$9 billion Core Scientific acquisition.

Private‑equity activity rose modestly in volume (financial‑buyer deals +4% to 1,484) while PE M&A value jumped 54% to $536 billion, and IPO issuance rebounded in H2 2025 as investors embraced new offerings. In contrast, middle‑market M&A slumped to a decade low (about 496 deals), with PwC flagging valuation gaps and macro headwinds as constraints on exits.

PwC and surveyed CFOs characterize the recovery as conditional: stabilization in trade policy, falling interest rates, and sustained AI investment would likely extend momentum, while persistent cost and supply‑chain pressures and valuation mismatches present downside risk. Workday's disciplined, strategic ~$1.1 billion acquisition of Sana exemplifies targeted AI tuck‑ins rather than volume‑driven M&A, underscoring selective deal quality over broad market participation.

Key Decisions for Investors

• Consider selective exposure to large‑cap acquirers and clear AI beneficiaries (e.g., companies engaged in megadeals and strategic tuck‑ins) where M&A is visibly expanding capabilities and could support revenue/market‑share upside
• Avoid or underweight direct middle‑market deal exposure or funds focused on near‑term exits until valuation gaps narrow and deal counts recover from the reported decade‑low of ~496 transactions
• Monitor macro triggers PwC highlights — interest‑rate direction, trade‑policy stabilization, and AI spending cadence — and use hedges or cash management to protect positions if those indicators deteriorate
• Track PE deal flow and the 2026 IPO pipeline as leading signals of risk appetite (PE M&A value rose to $536bn and IPOs rebounded in H2 2025); consider selective, high‑quality IPO allocations only with favorable pricing and underwriting