A 10-year bond bought in 2021 now trades at 85 cents
Treasury yields rose eightfold in six years as deficits, AI debt, and inflation push rates higher, not lower.
By The Ledger · · 5 min read
A 10-year Treasury note issued in August 2021 carried a coupon of 1.25%. It now trades around $85 for every $100 of face value — a 15% discount. The bond will still pay full value at maturity in 2031. Anyone who needs to sell before then eats the loss.
That single bond is the clearest evidence of a reversal that started in 2020 and has not stopped. From September 1981 to the summer of 2020, 10-year Treasury yields fell almost continuously — from 16% to under 1%. Since 2020, they have risen roughly eightfold. The 30-year bond recently yielded 5.3%. The question for anyone holding a bond, or a mortgage, or a 401(k), is whether that climb is a blip or a new multi-decade trend.
The move isn't about the Federal Reserve. It's about who's borrowing.
Bond yields track two things: expected inflation, and the sheer volume of competing borrowers. Both have shifted since 2020, and neither is temporary in the way a rate-setting meeting is temporary.
Start with inflation. At 3% annual inflation, $100 shrinks to $74 of real purchasing power over 10 years. A bondholder lending money for a decade wants compensation for that erosion, plus a real return on top. When inflation looked tame and falling, lenders accepted lower yields. Inflation now looks sticky rather than falling, so lenders are demanding more.
Then there's volume. From 1947 through 2008, the US government ran a deficit above 5% of GDP exactly once. Since 2009, it has done so 11 times. Gross federal debt passed $40 trillion in August, up from $6 trillion in 2000. Interest payments on that debt now exceed annual defense spending and account for half the federal deficit. The government is, by a wide margin, the largest borrower in the bond market — and it has gotten much larger, much faster, than at any point in the postwar era.
Four tech companies just became bond-market whales
Government borrowing isn't the only new demand pulling on the same pool of lenders. Amazon, Alphabet, Oracle, and Meta — companies that historically funded themselves from cash flow — issued a combined $194 billion in bonds in 2026 through July 7, according to Reuters. That compares with $108 billion over the same period the year before, an 80% jump. The money is going mostly to data centers.
Put the government and the tech sector side by side in the same credit market, both borrowing more than before, and the mechanism is simple: more borrowers chasing the same pool of lenders means lenders can charge more. That is the plain arithmetic behind a higher 10-year yield, no Fed meeting required.
Who pays: anyone who holds the old, lower-yielding paper
The mechanism that actually hurts bondholders isn't the yield itself — it's what a higher new yield does to the price of what they already own.
Treasury bonds are fixed-rate contracts. Buy one yielding 5% today, and if newly issued 10-year notes later yield 7%, nobody will pay full price for your 5% note. To sell it before maturity, the price has to fall until its yield, calculated from the discounted price, matches the market. That's the mechanics behind the 2021 note trading at $85 for every $100 of face value — a 1.25% coupon from 2021 is unattractive next to what newer bonds pay now. Longer maturities take bigger discounts, because more years of below-market interest have to be priced in.
Hold to maturity and the face value is guaranteed — that's the one advantage a bond has over a stock, which carries no repayment promise at all. But selling early, or needing the money early, means realizing a loss that exists purely because rates moved after purchase.
Stock dividend investors face a smaller version of the same squeeze. The average S&P 500 stock now yields 1.1% in dividends — 3.7 percentage points below the recent 10-year Treasury yield. For income-focused investors, bonds have become the better-paying asset, at least on a current-yield basis, for the first time in years.
The Treasury secretary's fix could make the problem worse
The US Treasury secretary has floated buying up America's own long-term debt to push interest rates down. That's an attempt to manufacture demand where the market isn't supplying it naturally. But a government visibly intervening to prop up its own bond prices can read to other lenders as a signal that the debt load is a problem serious enough to require intervention — which can push yields higher, not lower, exactly the outcome the policy was meant to avoid.
Stocks still win over decades, but the path through them is uneven
Over roughly the past 100 years, the S&P 500 has returned an annual average near 10%. That average hides enormous swings. Since 2000, the index has returned less than 5% in nine separate calendar years, six of them losses — one as deep as 37% in a single year. A bond, by contrast, pays a contractual yield and returns full face value at maturity, with no such swing, as long as it's held to term.
The two assets aren't competitors for the same money. They answer different questions. A bond answers "what do I need back, and when." A stock answers "what can I afford to have swing by 30% in a bad year, in exchange for a better average over decades." Owning both, in proportions set by which question matters more to a given saver, is not a hedge against uncertainty about rates — it's an acknowledgment that nobody, including the Treasury secretary, can reliably time the next multi-decade turn.
What would prove this wrong
This is a trend claim, not a certainty, and it has a clear falsification test. If federal deficits shrink back toward pre-2009 norms, if the AI-driven corporate borrowing surge tapers once data center buildouts are financed, and if inflation readings fall back toward 2% and stay there, yields have every reason to resume their four-decade decline. None of those three conditions is currently in motion. Until at least one of them visibly reverses, the arithmetic continues to point one way: more borrowers, each year, chasing the same supply of lenders.
The cost lands first on anyone holding a fixed-rate bond bought in the low-yield years, and on homebuyers facing mortgage rates set by the same Treasury market. It lands second on taxpayers, who fund a federal interest bill now larger than the defense budget. Both bills come due regardless of what any single piece advises an investor to do about it.