Surge in Hyperscaler Debt Issuance Raises Concerns Over Investment Grade Bond Market

Major technology companies, known as hyperscalers, have issued a record $121 billion in investment-grade debt this year, significantly exceeding their five-year average of $28 billion. This surge includes $81 billion from Amazon, Alphabet, Meta, Microsoft, and Oracle since September, along with earlier deals and a $27 billion transaction in October.

The increased supply has widened credit spreads for these companies. Between September 1 and November 14, Oracle's spreads increased by 48 basis points, Meta's by 15, and Alphabet's by 10, representing a 27-49% widening that underperforms the overall investment-grade index.

Economists are concerned about the potential impact on the broader bond market. The significant increase in hyperscaler issuance raises questions about who will be the marginal buyer of investment-grade paper. Will it come from Treasury purchases, potentially putting upward pressure on interest rates, or from mortgage purchases, affecting mortgage spreads?

The U.S. national debt has reached $38 trillion, with the federal government borrowing $601 billion in the first three months of the 2026 fiscal year, which began in October 2025. This is $110 billion less than the deficit during the same period a year earlier, as tariffs helped revenue outpace spending. However, the Supreme Court could soon strike down President Donald Trump's global tariffs, and the upcoming tax season is expected to see a surge of refunds due to new tax cuts under the One Big Beautiful Bill Act.

President Trump has also vowed to boost defense spending to $1.5 trillion a year from $1 trillion, which could further deepen federal budget deficits. Despite the Federal Reserve's series of rate cuts this past autumn, Treasury yields remain about where they were in early September, suggesting the government will not see much relief on debt-servicing costs that are also contributing to the overall tally of red ink.

The bottom line is that the volume of fixed-income products coming to market this year is significant and is likely to put upward pressure on rates and credit spreads as we go through 2026.

To ensure sufficient demand among bond investors, Treasury yields must remain attractive relative to the competition. Failure to draw enough investors raises the risk of fiscal dominance, where a central bank must step in to finance widening deficits. Former Treasury Secretary Janet Yellen warned last weekend that the preconditions for fiscal dominance are clearly strengthening, noting that debt is on a steep upward trajectory toward 150% of GDP over the next three decades.

The holders of U.S. debt have shifted drastically over the past decade, tilting more toward profit-driven private investors and away from foreign governments that are less sensitive to prices. This threatens to make the U.S. financial system more fragile in times of market stress, according to Geng Ngarmboonanant, a managing director at JPMorgan and former deputy chief of staff to Yellen during her tenure at Treasury. Foreign governments accounted for more than 40% of Treasury bond holdings in the early 2010s, up from just over 10% in the mid-1990s. This reliable bloc of investors allowed the U.S. to borrow vast sums at artificially low rates. Those easy times are over. Foreign governments now make up less than 15% of the overall Treasury market.