Mathew Carr

Here are the ‘victims’ of the bond rout during the past month; US 10-year sovereign yield threatens to break below 5% as traders escape AI shares (1)

Opinion and reporting By Mathew Carr

During the Treasury rout of September and October 2026, corporate and sovereign issuers faced a punishing environment of elevated borrowing costs.
As the US 10-year Treasury yield surged to touch 5.35% in early October, the government successfully cleared massive auctions at inflated yields: $58 billion in 3-year notes at 4.932% on October 6, $39 billion in 10-year notes at 5.30% on October 7, and $22 billion in 30-year bonds at 5.618% on October 8.
This high-rate environment inflicted significant pain on companies and emerging markets forced to raise capital, with US investment-grade corporate yields climbing from summer lows to 5.96% and high-yield bonds approaching 8%.
Despite these hostile conditions, several international issuers pressed forward in early October, pricing deals that locked in these higher expenses. Yinson Azaela finalized a $1.46 billion Angola-linked 2040 bond, DBS Bank raised $1.5 billion across three tranches, and Banco de Credito del Peru priced $500 million in Tier 2 debt. In the sovereign space, Laos had to swallow a staggering 9.625% yield to raise $500 million.
The capital-intensive artificial intelligence sector also suffered heavily as market sentiment shifted. While the broader AI industry had gorged on $466 billion in debt earlier in the year, the relentless pace slowed by September.
Yet, the sheer scale of AI infrastructure demands forced massive October financings despite the elevated rates. Broadcom moved forward with a $60 billion debt package for Anthropic—beginning syndication of $42 billion in senior secured loans on October 5. Similarly, reports emerged on October 6 that SpaceX was pursuing a $40 billion debt package to acquire Nvidia hardware.
The pressure extended beyond primary issuance; in secondary markets, existing debt from AI infrastructure providers faced intense scrutiny, with CoreWeave seeing its bond yields spike dramatically to 15% on October 14 as investors questioned the financial stability of the AI boom.

It is entirely fair to say the US taxpayer absorbed more of the absolute cost of those higher yields than either Broadcom or SpaceX over the past month.

When comparing the sheer volume of debt locked in at those peak rates during the first week of October:

  • US Treasury (Taxpayers): Cleared a combined $119 billion in just three days (Oct 6–8) across 3-year ($58B), 10-year ($39B), and 30-year ($22B) auctions at elevated yields up to 5.618%.

  • Broadcom: Began syndicating $42 billion in senior secured loans on October 5 as part of the larger package.

  • SpaceX: Reported to be pursuing a $40 billion debt package on October 6.

Because the US government issued nearly three times the debt of either company during the exact window when yields were peaking, the aggregate financial burden of those high rates falls overwhelmingly on the sovereign level (the taxpayer) rather than the corporate issuers.

(more to come)

Leave a Reply