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Fewer Deals, Bigger Stakes: Deciphering the 2026 M&A Landscape and the Rise of Megadeals

March 5, 2026   |   
Author: Christine Short

  • Thus far in 2026, total deal volume is off on a YoY basis, with announcements falling 22% vs. Jan/Feb 2025

  • While overall deal volume has started 2026 slowly, the number of megadeals ($1B+) has more than doubled, headlined by Paramount's massive $170 billion acquisition of Warner Bros

  • Despite recent AI fears playing out in the markets, acquirers are aggressively targeting AI infrastructure, data moats, and sovereign AI capabilities within a variety of sectors

M&A Trends YTD: Lower Volume, Higher Value

With one month left in the quarter, M&A is running a little light compared to the record-breaking close of 2025. According to Wall Street Horizon's coverage universe of 11,000 global equities, there have been 59 M&A announcements and 78 closes as of March 2. However, while overall deal volume is somewhat soft, megadeal volume (transactions over $1B) is up 57% YoY. In January/February 2025 there were fourteen $1B+ deals announced, vs. this year which has already seen 22 such deals announced.

Overall, M&A activity has stabilized over the last decade. Activity between 2016 - 2018 was averaging over 1,000 deals a year. Since 2020, the market has stabilized at a much lower new normal of approximately 400–500 announcements annually.

And while M&A announcements were down in January and February 2026 (57 in 2026 vs. 73 in 2025, a decrease of nearly 22%), closes are slightly up (76 in 2026 vs. 71 in 2025, up 7%). This suggests that while the pipeline of new deals has started 2026 more slowly, the rate of completing existing deals from late 2025 remains steady.

Something else to note is that the time required to finalize a deal (from announcement to close) has nearly tripled in the last decade. Wall Street Horizon data shows the following:

  • 2016–2019 Average: ~53 days

  • 2020–2024 Average: ~150 days

For 2026, none of the 59 announced deals have closed yet within the dataset's timeframe. Given the current average of ~150 days to close, we should expect the bulk of early 2026 announcements to impact close figures starting in late Q2 or Q3 of 2026.

Mega Deals Announced in 2026

The most prominent headline in M&A this week was Paramount's monumental $170 billion victory over Netflix in the bidding war for Warner Bros. This transformative acquisition joins a growing list of megadeals announced this quarter, including:

2026 Mega-Deals ($5B+):

  • Devon Energy / Coterra Energy: $58 billion (Announced Feb 2, 2026)

  • Boston Scientific / Penumbra: $14.5 billion (Announced Jan 15, 2026)

  • Nuveen / Schroders: ~$13.5 billion (Announced Feb 12, 2026)

  • Banco Santander / Webster Financial: $12.2 billion (Announced Feb 3, 2026)

  • Zurich Insurance / Beazley: $11 billion (Announced Feb 4, 2026)

  • Global Infrastructure Partners (BlackRock) & EQT / AES Corporation: $10.7 billion (Announced March 2, 2026)

  • SGH Ltd & Steel Dynamics / BlueScope Steel: $10.7 billion (Announced Jan/Feb 2026)

  • Danaher / Masimo: $9.9 billion (Announced Feb 17, 2026)

  • Advent International & FedEx / Inpost S.A.: $9.2 billion (Announced Feb 9, 2026)

  • Victory Capital / Janus Henderson: $8.6 billion (Announced Feb 26, 2026)

  • Gilead Sciences / Arcellx: $7.8 billion (Announced Feb 23, 2026)

  • Texas Instruments / Silicon Labs: $7.5 billion (Announced Feb 4, 2026)

  • The Brink's Company / NCR Atleos: $6.6 billion (Announced Feb 26, 2026)

  • Hg / OneStream: $6.4 billion (Announced Jan 6, 2026)

  • Mubadala Capital / Clear Channel Outdoor: $6.2 billion (Announced Feb 9, 2026)

  • Transocean / Valaris: $5.8 billion (Announced Feb 9, 2026)

2026 M&A Tailwinds - Rates and Regulation

In 2026, the M&A landscape is benefiting from significant tailwinds as the market shifts from a period of stagnation toward a more active state. Investment banks emphasize that the primary catalyst is no longer the search for rock-bottom interest rates, but rather rate stability, which provides CEOs and CFOs with the predictable environment needed for accurate debt modeling and long-term valuation.

In their 2026 outlooks, major banks describe the current climate as a "massive backlog" poised to unleash as interest rate visibility firms up toward mid-year. On their Q4 2025 earnings call back in January, Goldman Sachs' CEO David Solomon stated, "The current environment for large mergers and acquisitions is quite constructive for 2026 and 2027... with a tremendous backlog of significant consolidating situations. We have seen a massive pick-up in activity."1 Banking executives from Morgan Staley to Citigroup have shared similar views in their M&A outlooks.

This momentum is further bolstered by a regulatory environment perceived as increasingly "deal-friendly" for vertical integrations and strategic industrial moves. While Big Tech megamergers remain under the microscope, the broader corporate sector is finding a clearer path to closure, driving a renewed appetite for transformative deals across diverse industries.

M&A Targets 2026

While the February "AI Rout" slashed software sector valuations by nearly 30%, driven by fears that AI-native startups could easily replicate traditional SaaS wrappers, it's possible that this has created M&A opportunities in the space. Beyond software, there are several AI adjacent industries that will likely fuel M&A this year, including semiconductors, networking, HVAC, industrial cooling and real estate. According to Morgan Stanley, "Companies are acquiring to immediately close capability gaps and participate in explosive demand for AI compute."2

Unsurprisingly, AI Infrastructure is expected to be the year's Gold Rush, with premium valuations for data center cooling and power management firms. Also linked to AI are Aerospace & Defense deal values which have jumped year-over-year as buyers secure sovereign AI and drone logistics. Finally, Healthcare leaders are aggressively hunting for AI-driven drug discovery platforms and firms with regulator-ready clinical data to accelerate development timelines.

Bottom-Line

According to Wall Street Horizon's coverage universe of 11,000 global equities, the first quarter of 2026 is off to a slow start as far as M&A announcements are concerned, but perhaps the focus should be quality over quantity. While deal volume has been slightly soft, that's being offset by a surge in high-value strategic consolidations. Investment bankers view the current market as primed, with rate stability and friendly regulation providing the necessary confidence for CEOs to execute acquisitions. As certain sector valuations reset, the focus has shifted toward securing critical infrastructure, positioning 2026 as a pivotal year for companies looking to bridge capability gaps.

1 Goldman Sachs Conference Call on 2025 Full Year and Fourth Quarter Earnings Results, January 15, 2026, https://www.goldmansachs.com
2 "5 Forces Driving M&A in 2026," Morgan Stanley, January 22, 2026, https://www.morganstanley.com

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