Global M&A activity reached $3.9 trillion through the first nine months of 2026, up 28% year-over-year and the strongest period since 2001, driven by megadeals in technology, AI infrastructure, and strategic scale-seeking by corporates. North American deals accounted for over half the value amid a selective market where large transactions dominate while broader volumes lag. Third-quarter dealmaking fell 41% sequentially to $993 billion as 10-year Treasury yields climbed above 5%, tightening valuations and financing costs, though private equity remained active and cross-border flows held firm. Market-implied odds for specific acquisitions by end-2027 reflect these dynamics, with trader consensus pricing in continued AI and tech consolidation against uncertainty from higher borrowing costs and regulatory pathways. Key near-term catalysts include corporate earnings, potential Fed policy adjustments, and sector-specific regulatory approvals that could accelerate or delay closings.