TLT ETF falls to 20-year low as 30-year yields hit 5.31%

The iShares 20+ Year Treasury Bond ETF closed at $81.35 on Monday, its lowest since June 2004, as the 30-year Treasury yield climbed to 5.31 percent, the highest level since 2007.

The Treasury Borrowing Advisory Committee said projected funding gaps could require higher coupon issuance in fiscal 2027, while renewed Iran tensions pushed oil higher in July and helped markets shift from expecting rate cuts toward pricing possible hikes.

The fund, which holds U.S. Treasury bonds maturing in more than 20 years, has fallen more than 50 percent from its March 2020 peak above $170. The 30-year constant-maturity yield rose from 4.91 percent on June 30 to 5.21 percent on August 13, while Thursday's $25 billion 30-year auction cleared at 5.216 percent, the highest auction yield in roughly 25 years. July CPI rose 3.4 percent from a year earlier and producer prices were up 4.7 percent, keeping inflation above the Federal Reserve's 2 percent target.

The selloff raises borrowing costs across the economy — mortgages, corporate debt and government financing — and pressures equity valuations. The Fed held rates at 3.5 percent to 3.75 percent on July 29, with three policymakers preferring a quarter-point increase, while markets have shifted from pricing cuts to pricing possible hikes.

Fiscal Supply Piles On

Treasury on August 3 raised its July-September borrowing estimate to $739 billion, $68 billion above its May projection. The larger funding need comes as the government finances widening deficits while investors demand higher compensation for holding longer-dated paper. Large federal deficits and growing corporate borrowing for artificial-intelligence infrastructure are cutting investor demand for long-term U.S. government bonds, according to MarketWatch.

The last time the 30-year yield traded near current levels was June 2007, before the global financial crisis triggered a flight to quality that pushed yields sharply lower over the following years. The current selloff has been more persistent, with the TLT ETF now down roughly 52 percent from its 2020 high. The fund's decline from its March 2020 peak above $170 to current levels represents one of the most sustained drawdowns in the history of the U.S. Treasury market, reflecting the shift from a zero-interest-rate environment to one where the government must pay substantially more to borrow for three decades.

The supply picture is unlikely to improve soon. The Treasury's advisory committee flagged that projected funding gaps could require higher coupon issuance in fiscal 2027, meaning the government may need to sell more long-dated bonds even as investor appetite for them weakens. This dynamic — rising supply meeting falling demand — is the core driver of the yield surge, and it has no obvious near-term resolution.

Cross-Asset Fallout

Higher long yields matter well beyond Treasuries. They raise mortgage rates, corporate borrowing costs and government financing expenses, and can pressure stock valuations as the risk-free rate competes with equities for capital. Home builder stocks have so far held up as bonds drop, but that resilience may not last if mortgage rates continue climbing. The 30-year mortgage rate typically tracks long-dated Treasury yields with a spread, so a sustained move above 5 percent in the 30-year Treasury could push mortgage rates toward levels that further cool housing demand.

The Fed's next policy decision will be closely watched. Markets have moved from pricing rate cuts to pricing possible hikes, a significant shift from earlier in the year when investors expected the central bank to begin easing. Three of the Fed's policymakers preferred a quarter-point increase at the July 29 meeting, and if inflation data continues to run hot, more officials could join them. If inflation remains above target and fiscal supply keeps growing, long-dated yields could push higher still, with the 30-year yield potentially testing levels not seen since the early 2000s.

For equity investors, the implications are direct. Higher long-term yields raise the discount rate applied to future corporate earnings, compressing valuations across growth sectors. The S&P 500's forward price-to-earnings multiple has historically shown an inverse relationship with the 10-year Treasury yield, and a sustained move above 5 percent in long-dated yields would put additional pressure on the market's richest stocks. Bond investors, meanwhile, face the uncomfortable reality that the world's safest asset has become one of its most volatile trades.

This article is for informational purposes only and does not constitute investment advice.