Global M&A Activity Slows in Q3 2026 as Higher Borrowing Costs Reshape Dealmaking

Global mergers and acquisitions activity lost momentum in the third quarter of 2026 as higher borrowing costs, rising Treasury yields and persistent energy-price pressures made large corporate transactions more difficult to finance.

Worldwide M&A activity totaled $993 billion in Q3 2026, representing a 41% decline from the previous quarter and marking the first quarterly total below $1 trillion since Q2 2025, according to LSEG data reported by Reuters.

The quarterly slowdown, however, does not mean global dealmaking has stopped. M&A activity remains historically strong on a year-to-date basis, with worldwide transaction value reaching approximately $3.9 trillion, up 28% from the same period a year earlier.

Global M&A Activity Falls Below $1 Trillion

The third quarter produced a sharp contrast with the unusually strong dealmaking seen earlier in 2026.

Global M&A volume declined to $993 billion from the previous quarter, while the number of deals worth more than $10 billion also fell. Only 10 megadeals above that threshold were announced during Q3, the lowest quarterly number since Q4 2024.

The decline suggests that companies are becoming more selective about large acquisitions as the cost of financing increases.

For businesses considering acquisitions, higher interest expenses can affect the amount they are willing to pay, the financing structure of a transaction and the expected return from an acquisition.

Why Higher Borrowing Costs Are Affecting Dealmakers

One of the biggest changes in the financial environment is the sharp increase in government bond yields.

The U.S. 10-year Treasury yield reached 5.34% on October 1, its highest level since 2002. It also recorded its largest quarterly increase of the 21st century during Q3.

Treasury yields influence borrowing costs across financial markets. When benchmark yields rise, companies can face more expensive debt financing, making highly leveraged acquisitions less attractive.

Higher rates can also make it harder for buyers and sellers to agree on valuations. A company that looked reasonably priced when financing was cheaper may become less attractive when the cost of capital rises.

Energy Costs Add Another Layer of Pressure

Borrowing costs are not the only challenge facing businesses.

Higher energy prices have added to inflation concerns, which can influence expectations for interest rates and increase operating costs for companies.

The combination of expensive energy and higher financing costs creates a difficult environment for businesses planning major investments or acquisitions.

For companies in energy-intensive industries, the impact can be particularly significant because higher operating costs can reduce the amount of cash available for expansion and acquisitions.

Megadeals Continue Despite the Q3 Slowdown

Although the number of major transactions declined, large strategic deals continued to take place.

Among the major Q3 transactions were Banca Monte dei Paschi’s $32 billion bid for Banco BPM and Gold Fields’ $25.7 billion bid for Northern Star Resources.

These transactions demonstrate that companies are still willing to pursue large-scale acquisitions when they see strategic value.

The difference is that companies may now be applying greater scrutiny to financing costs, valuations and expected returns before completing transactions.

M&A Is Still Strong on a Year-to-Date Basis

Looking beyond Q3 provides a different picture.

Worldwide M&A value reached approximately $3.9 trillion during the first three quarters of 2026, up 28% from the comparable period and representing the strongest level for that period since 2001, according to the Reuters report citing LSEG data.

At the same time, the number of transactions declined 8%.

This difference between total deal value and deal volume is important. It indicates that fewer transactions can still generate a very large overall market when major acquisitions account for a substantial share of total activity.

AI Remains a Major Driver of Corporate Dealmaking

Artificial intelligence continues to influence corporate investment and acquisition strategies.

Technology companies and businesses seeking access to AI capabilities, data infrastructure and specialized technology are still pursuing strategic investments.

Strategic stakes in technology companies accounted for roughly one-quarter of global M&A activity by value so far in 2026, according to the Reuters report.

AI-related investment is therefore creating an unusual combination: higher financing costs are putting pressure on deal activity, while the strategic importance of AI is encouraging some companies to continue spending.

Data Centers and Infrastructure Keep Attracting Capital

The expansion of AI has also increased demand for data centers and supporting infrastructure.

Data-center development requires substantial capital, energy and technology investment. As a result, companies involved in computing infrastructure, power supply, networking and related technologies can remain attractive targets for strategic investors.

However, higher interest rates can make large infrastructure projects more expensive to finance. This creates a tension between long-term demand for AI infrastructure and near-term financing conditions.

Asia-Pacific M&A Shows Greater Resilience

Regional performance has not been uniform.

Asia-Pacific M&A activity totaled approximately $242 billion in Q3, increasing 8% from the previous quarter and 36% from the same quarter a year earlier.

That contrasts with the sharper decline seen in U.S. and European dealmaking during the quarter.

The regional difference highlights how local financing conditions, corporate strategies, currency movements and sector-specific opportunities can influence M&A activity.

Cross-Border Acquisitions Remain Important

International dealmaking continues to be a major part of the global M&A market.

Cross-border M&A activity was up 32% year to date compared with the same period a year earlier, according to the Reuters report.

Companies are looking overseas for new markets, technologies and strategic capabilities. Currency movements can also influence acquisition decisions by changing the relative cost of assets in different countries.

For multinational companies, cross-border acquisitions can provide opportunities for geographic expansion while also introducing additional regulatory, currency and integration risks.

Private Equity Deal Activity Remains Significant

Private equity-backed transactions have also remained an important part of the market.

The value of global private-equity-backed dealmaking reached its strongest year-to-date level since records began in 1980, although activity also slowed in the third quarter compared with the previous year.

Higher financing costs can be particularly important for private equity because leveraged financing is often central to acquisition strategies.

As borrowing becomes more expensive, private equity firms may place greater emphasis on operational improvements, disciplined valuations and businesses capable of generating strong cash flow.

IPOs Are Supporting the M&A Market

Initial public offerings have also played a role in the broader corporate deal ecosystem.

Global IPO activity excluding SPACs reached about $215 billion year to date, the highest level since 2021, according to the Reuters report.

Newly listed companies can use their shares as acquisition currency, while strong public-market valuations can provide additional flexibility for strategic transactions.

However, higher interest rates and uncertainty around technology and data-center investment have also caused some IPOs to be delayed.

What Higher Rates Mean for Corporate Valuations

Higher borrowing costs can affect M&A valuations in several ways.

First, financing an acquisition becomes more expensive. Second, investors may demand stronger returns to compensate for higher interest rates. Third, companies may need to reconsider how much debt they can safely use to fund a transaction.

The result can be wider differences between what buyers are willing to pay and what sellers expect to receive.

That does not necessarily stop transactions, but it can make negotiations longer and encourage companies to structure deals more carefully.

Deal Volume and Deal Value Tell Different Stories

The Q3 figures demonstrate why M&A activity should not be measured using transaction count alone.

The number of deals declined while total annual deal value remained extremely high.

This means large strategic transactions continue to have an outsized influence on the global market.

For businesses and investors, tracking both deal value and deal volume provides a clearer picture of whether M&A growth is broad-based or concentrated in a relatively small number of major transactions.

What Companies Are Looking for in 2026

Despite the slowdown, companies continue to pursue acquisitions for strategic reasons.

Common objectives include gaining access to new markets, acquiring technology, expanding scale, strengthening supply chains and accelerating AI capabilities.

The current environment may therefore favor transactions with a clear strategic purpose rather than acquisitions based primarily on favorable financing conditions.

Companies with strong balance sheets may also have greater flexibility to pursue opportunities when competitors become more cautious.

Investor Caution Is Increasing

There are signs that investors are becoming more selective, particularly around technology and AI-related transactions.

Higher interest rates, expensive energy and uncertainty surrounding future technology spending can make investors more cautious about valuations.

At the same time, AI remains a powerful source of corporate investment, creating a complicated market environment in which companies are simultaneously trying to control costs and secure future technological capabilities.

What Could Happen to Global M&A in 2027?

The Q3 slowdown raises questions about the direction of global M&A activity heading into 2027.

If borrowing costs remain elevated, some companies may delay acquisitions or pursue smaller transactions. If financing conditions become more favorable, pent-up demand could support renewed deal activity.

AI, technology infrastructure, energy and cross-border expansion are likely to remain important strategic themes because companies continue to seek growth and technological capabilities.

The available data therefore points to a market that is slowing from an exceptionally strong pace rather than one in which corporate dealmaking has disappeared.

Global M&A Market: Key Takeaways

• Global M&A activity reached $993 billion in Q3 2026.
• Q3 activity was 41% lower than Q2.
• It was the first quarterly total below $1 trillion since Q2 2025.
• The U.S. 10-year Treasury yield reached 5.34%, its highest level since 2002.
• Year-to-date global M&A value reached approximately $3.9 trillion, up 28%.
• Asia-Pacific M&A reached about $242 billion, rising 8% quarter over quarter.
• Cross-border M&A remained strong, up 32% year to date.
• AI and technology remain important drivers of strategic investment.
• Higher borrowing costs are forcing companies to pay closer attention to financing and valuations.

Final Outlook

Global M&A entered the final quarter of 2026 with a more complicated financial backdrop than it had earlier in the year.

The sharp Q3 decline shows that higher borrowing costs can quickly affect the pace of major corporate transactions. Yet the $3.9 trillion year-to-date total demonstrates that strategic dealmaking remains substantial.

The next phase of the M&A market is likely to depend on the interaction between financing costs, corporate earnings, energy prices, AI investment and companies’ willingness to pursue strategic expansion.

For businesses, the message from Q3 is not simply that M&A is slowing. It is that the cost and strategic value of each transaction are becoming increasingly important.