The bond market rarely receives the same attention as the stock market. Stocks are easier to follow, more familiar to most investors, and historically the primary engine of long-term portfolio growth. But every so often, the bond market begins sending a message that investors should not ignore.
This appears to be one of those periods.
Long-term government bond yields have risen sharply in the United States and overseas. Earlier this week, the yield on the 30-year U.S. Treasury briefly climbed above 5.3%, its highest level since 2007, while the 10-year yield approached 4.75%. Because bond prices and yields move in opposite directions, the rise in yields has produced meaningful losses for holders of longer-duration bonds.
These moves also matter well beyond the bond market. Treasury yields influence mortgage rates, corporate borrowing costs, government finances, and ultimately the relative value of stocks and other investments.
Why Are Long-Term Rates Rising?
There is no single explanation. Rather, several forces have converged to push long-term yields higher.
Inflation remains an important part of the story. The Federal Reserve has made considerable progress since inflation peaked several years ago, but inflation remains above the 2% objective. More recently, higher oil prices and renewed geopolitical tensions have raised concerns that energy costs could slow or reverse that progress.
For bond investors, that concern is significant because inflation erodes the purchasing power of a bond’s fixed interest and principal payments. If investors believe inflation may remain elevated, they will generally demand a higher yield as compensation.
The distinction between short- and long-term interest rates is also important. The Federal Reserve directly controls a short-term policy rate, but it has much less control over the long end of the yield curve. Longer-term rates reflect the market’s collective expectations for inflation, economic growth, government borrowing, and the risks associated with committing capital for many years.
One way to think about this is through the “term premium,” which is simply the additional return investors demand to hold a long-term bond rather than repeatedly investing in shorter-term securities. That premium remained unusually low for much of the period following the global financial crisis. Today, investors appear to be demanding more compensation for the uncertainty involved in lending money for 10, 20, or 30 years.
Supply is part of the equation as well. The United States continues to run substantial fiscal deficits, requiring the Treasury to issue large amounts of debt. Demand for Treasury securities remains broad and deep, but buyers do not have unlimited capacity. As issuance grows, yields may need to rise to attract enough capital, particularly at longer maturities.
Meanwhile, the government is not the only large borrower coming to market. Technology companies are spending enormous sums on data centers, chips, power generation, and other infrastructure required to support artificial intelligence. Much of that investment is being financed through corporate debt, creating additional competition for investor dollars.
Nor is this solely an American phenomenon. Long-term government yields have also risen in Japan and several European markets. Investors around the world are reassessing inflation, government finances, and the amount of capital that both the public and private sectors will require in the years ahead.
The result has been a notable steepening of the yield curve, with long-term rates rising more sharply than short-term rates. In effect, the market is saying that lending money for several decades now requires substantially more compensation than it did in the recent past.
What Treasury’s Buybacks Can and Cannot Do
Against that backdrop, the Treasury Department made an unexpected announcement on August 19. Beginning September 9, it will at least double the maximum size of certain long-term bond buyback operations, from $2 billion to $4 billion per operation. The increase applies to Treasury securities in the 10-to-20-year and 20-to-30-year maturity sectors.
The mechanics are straightforward. Over time, older Treasury bonds tend to trade less frequently than newly issued securities. Through its buyback program, the Treasury provides investors with an additional buyer for these older, less liquid bonds. That can make the market function more smoothly and allow investors to transact without causing unusually large price movements.
The announcement caught the market’s attention. Long-term bond prices initially rose, and yields declined as investors anticipated additional Treasury demand. Some of that move subsequently reversed, however, underscoring both the potential benefits and the limitations of the program.
There is also an important distinction between these buybacks and quantitative easing. When the Federal Reserve conducts quantitative easing, it creates reserves to purchase securities and reduces the amount of duration the private market must hold. The Treasury’s program is a debt-management operation. It repurchases certain outstanding bonds while continuing to issue new debt to finance the government.
The buybacks may improve liquidity and relieve pressure in specific parts of the market, but they do not meaningfully reduce the government’s overall borrowing needs. At $4 billion per operation, they are also modest relative to the roughly $30 trillion market for publicly traded Treasury securities.
We believe the Treasury repurchase program is not a cure for the forces driving long-term yields higher. Viewed through a historical lens, today’s yields are elevated, but not unprecedented. Since 2009, the 10-year Treasury has averaged roughly 2.5%, while the 30-year has averaged approximately 3.3%. Over a longer period that includes the higher-inflation decades of the 1970s and 1980s, their historical averages are closer to 5.8% and 6.3%, respectively. In that sense, current yields represent a dramatic departure from the unusually low-rate environment investors became accustomed to after the global financial crisis, but not a break from a longer period of financial history.



