Big Tech Turns to European Debt Markets

European bond markets are facing increasing pressure as major US technology companies expand their borrowing to finance artificial intelligence infrastructure.

Although technology-related debt issuance in Europe remains significantly below US levels, activity is accelerating. Investors expect major technology companies, including Alphabet, Meta, Amazon and Microsoft, to make greater use of euro, sterling and Swiss franc markets in the coming months.

Alphabet launched its second euro-denominated bond sale of the year on Monday, following a €9 billion issuance in May.

Marion Le Morhedec, chief investment officer for fixed income at Fidelity International, estimated that between €40 billion and €60 billion of additional issuance could be in the pipeline.

European markets offer companies access to deep pools of institutional capital and potentially lower borrowing costs. Issuing debt in foreign currencies also allows multinational companies to hedge currency exposure associated with their global assets.

However, the growing presence of large technology borrowers could create additional competition for investor capital and influence financing conditions across European markets.

European Corporate Bond Supply Expected to Surge

The difference between US and European technology debt issuance remains substantial.

US markets have absorbed more than $250 billion in technology-related debt so far this year, representing an 81% increase compared with the same period last year. European issuance reached $39.3 billion, approximately 5% higher year over year, according to LSEG data.

Despite concerns about whether massive AI investments will generate sufficient returns, analysts expect borrowing activity to remain strong.

BNP Paribas forecasts that net supply of euro-denominated investment-grade corporate bonds will increase 83% to €192 billion in 2027, compared with €105 billion this year.

Offshore issuance by US companies, commonly referred to as reverse Yankee bonds, is expected to contribute approximately €80 billion to €90 billion of next year’s total supply. Hyperscalers are expected to account for most of that amount.

The scale of potential transactions means that individual technology issuances could have a meaningful influence on European credit markets.

Jumbo Transactions Could Widen Credit Spreads

A significant increase in corporate borrowing could intensify competition between hyperscalers and established European issuers, including utilities, telecommunications companies and automakers.

As more highly rated borrowers seek financing, investors may demand higher compensation to absorb additional supply.

Asset swap spreads on the ICE BofA Euro Investment Grade index widened by 11 basis points last month, indicating that investors were demanding greater compensation to hold corporate bonds relative to interest-rate swaps.

Analysts also expect some issuers may need to offer pricing concessions to attract sufficient demand.

European investors have less experience absorbing the large, multi-tranche transactions that have become common in US markets. Consequently, several major offerings arriving simultaneously could temporarily widen investment-grade credit spreads.

Jonathan Owen of TwentyFour Asset Management noted that large transactions could test the capacity of European markets to absorb additional supply.

European Companies Adjust Debt Maturity Strategies

The prospect of heavier issuance and volatile long-term yields is already influencing financing decisions among European companies.

Some corporate borrowers outside the hyperscaler sector are increasingly favoring shorter maturities rather than issuing traditional 10-year bonds.

Vontobel portfolio manager Christian Hantel observed that certain companies are moving toward five-to-seven-year maturities instead of longer-term financing.

This shift suggests that borrowers are responding to uncertainty surrounding long-term borrowing costs and the expected increase in corporate debt supply.

Although investor demand has so far absorbed new issuance, a series of transactions valued between €10 billion and €20 billion could challenge market capacity, particularly if several companies approach investors simultaneously.

Sovereign Bond Markets Face Additional Pressure

The expansion of technology-related corporate borrowing could also affect European government bond markets.

Governments are already dealing with concerns surrounding fiscal deficits, inflation and elevated borrowing costs. Additional competition for long-term investor capital could place further pressure on sovereign financing conditions.

European Central Bank President Christine Lagarde said that borrowing by hyperscalers had contributed to rising sovereign bond yields.

Technology companies offer investors relatively high credit quality while typically providing higher yields than government bonds. This combination could make their debt attractive relative to sovereign securities, potentially influencing demand across fixed-income markets.

The interaction between corporate issuance and government borrowing therefore represents an increasingly important consideration for European debt markets.

What Investors Should Watch Next

The scale and timing of upcoming hyperscaler bond transactions will be central to the European credit outlook. Investors will be monitoring whether the projected increase in issuance translates into wider investment-grade spreads and higher borrowing costs for companies outside the technology sector.

The ability of European markets to absorb large multi-tranche transactions will also be tested as US technology companies diversify their funding sources.

For sovereign borrowers, the additional competition for long-term capital could complicate existing financing challenges. The broader issue is whether expanding AI-related debt issuance will reshape the balance between corporate and government borrowing across European fixed-income markets.