U.S. Treasury Yields Surge to Highest Since 2007

U.S. Treasury yields have surged to their highest levels since 2007, driven by geopolitical tensions, rising oil prices, and growing fiscal deficits. The benchmark 10-year Treasury note rose to around 4.74%, while the 30-year bond hit approximately 5.33%. This surge in borrowing costs is influenced by stalled U.S.-Iran talks, increasing defense spending, and a significant jump in the U.S. fiscal deficit.

According to Reuters, the collapse of the Memorandum of Understanding (MOU) between Washington and Tehran in June indicated a persistent energy shock. Will Compernolle, macro strategist at FHN Financial in Chicago, attributed the rise in U.S. yields to Middle East tensions due to light summer trading volumes and lack of economic indicators or remarks from U.S. central bank policymakers.

The yield on the 30-year Treasury bond rose over 5.33% on Tuesday, reaching its highest since June 2007, as reported by Reuters. The benchmark 10-year Treasury note also saw an increase to around 4.74%. These rises were echoed in other advanced economies, with Japan's 10-year government bond yield climbing to a three-decade high of 2.945% and Germany's 10-year Bund yield touching its highest since 2011.

The U.S. fiscal deficit jumped to $432.3 billion in July, the highest monthly total since March 2021, according to CNBC. This increase in borrowing costs is also influenced by massive capital expenditures for artificial intelligence and a rising U.S. budget deficit. Vasu Menon, managing director of investment strategy at OCBC, suggested that competition for capital from AI hyperscalers was contributing to higher Treasury yields.

Geopolitical tensions have led to increased oil prices, with Donald Trump's threat to bomb Oman if they interfered with negotiations around the Strait of Hormuz pushing oil above $91 a barrel. This has further exacerbated economic uncertainty and contributed to the rise in Treasury yields. Additionally, foreign holdings of U.S. Treasuries slipped to $9.299 trillion in June from $9.371 trillion the previous month.

The U.S. Treasury Department announced on Wednesday it will more than double the amount of U.S. government bonds that it will buy back, according to PBS. This move aims to stabilize the bond market amid rising yields and economic uncertainty. Some analysts warn that this could ultimately backfire, as the numbers involved are small and the operation is temporary.

Total public debt hit $40 trillion on Wednesday, more than doubling in a decade, as reported by CNBC. This significant increase in government debt has raised concerns about the true cost of borrowing and its impact on the economy. Nigel Green, CEO of financial consultancy deVere Group, stated that 'Bond markets are sending an equally loud signal... They're a warning about the true cost of government borrowing.'

The Treasury's move to expand purchases of older long-dated bonds has revived concerns in foreign-exchange markets: if Washington will not let ​borrowing costs rise, will the dollar end up absorbing the adjustment instead? On Wednesday, Treasury said it wouldat least doublethe maximum size of certain buyback operations, ‌raising the cap to 'at least' $4 billion. The purchases target long-term securities that have faced heavy selling since late June.

Treasury Secretary Scott Bessent told CNBC thatthe buyback could be more than $4 billionand that the market 'got a little bit ahead of itself' with the recent selloff. This is not the first time the U.S. has used this tool. Treasury revived buybacks in 2024 as a liquidity-management tool for thinly traded older bonds.

The timing and scale of this announcement, coming outside the normal quarterly refunding calendar and just ahead of a 20-year auction, led some investors to read it as ​an attempt to relieve pressure on long-term yields. These have climbed amid a deteriorating fiscal outlook, heavy issuance, geopolitical risk and uncertainty over the Fed's ⁠policy path.

The question now is whether policymakers will ​let markets set a higher clearing yield for long-dated debt, or instead lean on measures that could ultimately weigh on the dollar — in part by making U.S. bonds less attractive to investors ​and limiting related investment inflows.