Bonds bounce on US buybacks, but relief may be brief

On August 20, the surprise announcement from the U.S. Treasury regarding increased long-end buybacks of bonds helped arrest a global rise in long-term borrowing costs, though markets remained uneasy due to concerns over inflation and the growing government debt. The Treasury doubled its long-end buybacks to a minimum of $4 billion per operation, a move that provided immediate relief to borrowing costs, as noted by J.P. Morgan analysts.

However, analysts pointed out that the Treasury's actions, similar to recent Japan interventions, did not address the fundamental structural issues but merely alleviated short-term pressures. The U.S. 30-year yield fell by nine basis points to 5.19% overnight and stayed steady in Tokyo trade on Thursday. Similar moves were seen in Australian and South Korean debt markets, as well as rallies in Bund and French debt futures.

The U.S. Treasury stated that larger buyback operations were aimed at boosting market liquidity. Peter Cardillo, chief market economist at Spartan Capital Securities in New York, explained that the intention was to relieve short-term pressures in the long end. Worldwide long-term borrowing costs have reached multi-decade highs due to governments funding expanding welfare and defense spending through record debt levels.

Long-term borrowing costs affect government interest bills and impact various financial markets, serving as a benchmark for pricing assets like corporate bonds, equities, and real estate.

Germany's 10- and 30-year borrowing costs hit their highest levels in 15 years on Wednesday, but the U.S. Treasury's buyback news caused rates to retreat slightly. Germany's finance ministry attributed the surge in funding needs for massive defense investments to Russian aggression. Japanese yields have also skyrocketed to three-decade highs, putting pressure on government finances and fueling concerns about spending on an ambitious growth agenda.

U.S. debt has surpassed $40 trillion, more than doubling since 2017, as the country borrows to finance expensive pandemic responses and maintain a long-standing tax and spending imbalance. Analysts believe that these underlying imbalances will continue to weigh on the market, pushing long-term borrowing costs higher. Eric Robertson, global head of research and chief strategist at Standard Chartered, emphasized that the increase in U.S. Treasury yields was not driven by irrational market conditions but rather indicated a desire to control or intervene against natural supply and demand forces.