Long-dated US Treasury yields are steadily approaching a critical technical threshold, and this time the driving force may not be a monetary policy misstep, but rather a structural supply glut—the dual expansion of sovereign debt and AI capital expenditure is creating unprecedented pressure in the bond market. The 10-year Treasury yield is threatening to break above the key resistance level of 4.8%, while the 30-year yield has already pushed past a long-term technical resistance zone.
Rich Privorotsky, head of the Delta-one trading desk at Goldman Sachs, has put forward a warning worth heeding: the rise in long-end rates is increasingly a supply problem rather than a central bank discipline issue—massive sovereign deficits combined with annual AI capital spending that could exceed $1 trillion are being financed heavily through debt markets, leaving the market with simply too much paper to digest. Interest rate volatility remains relatively contained at present, and equities have yet to react fully to the upward move in yields. However, analysts caution that once rate volatility truly spikes, the magnitude of an equity market correction could far exceed what current pricing suggests. Meanwhile, implied volatility on S&P 500 options sits at its lowest level since January, making hedging relatively cheap—but this window may not stay open for long.
Long-end yields approach a pivotal breakout point
From a technical standpoint, the 10-year Treasury yield is at a critical juncture. If it closes above 4.8%, the market could face a genuine short squeeze. According to The Market Ear, after an extended period of range-bound trading, the market has built a complex psychological structure, and a decisive breakout following such a lengthy consolidation often creates a "vacuum zone," significantly raising the risk of accelerated price movement. The 30-year Treasury is showing an even more direct pattern. Long-term charts indicate that the 30-year yield has broken through multiple significant long-term resistance levels. The Market Ear notes that this is not a game for short-term traders, but if the breakout is confirmed and sustained, the ensuing price action could turn "quite ugly."
The twin squeeze of AI debt wave and sovereign deficits
Privorotsky's core argument is that the root cause of this long-end yield surge is a structural supply-side imbalance, not a market repricing of the Fed's policy stance. On the data front, AI-related debt issuance has grown explosively. According to Goldman Sachs data, AI-related companies have raised approximately $489 billion so far this year across global investment-grade, high-yield, and leveraged loan markets, already surpassing the full-year 2025 total of $322 billion. On a broader scale, US dollar investment-grade bond issuance has exceeded $1.5 trillion this year, and 2026 is on track to surpass the pandemic-era record.
At the same time, sovereign deficits remain persistently elevated. Privorotsky points out that while economic data has softened somewhat and short-end rates have outperformed accordingly, a hard constraint remains: massive sovereign deficits and potential annual AI capital spending exceeding $1 trillion together create sustained supply pressure on the bond market. In this context, even if economic data weakens, the Fed may be compelled to raise rates in a soft-data environment to re-anchor long-end rates and flatten the yield curve.
Valuation pressure builds—can tech stocks stay immune?
Despite the 10-year Treasury yield rising from below 4% since late February to current levels, tech stocks have shown unusual resilience, with the divergence between the Nasdaq 100 index and the 10-year yield widening to a notable degree. Privorotsky believes this divergence will ultimately be resolved through a compression in valuation multiples. His logic: if the market requires public or private sector spending cuts, the adjustment is more likely to fall on the private sector, since governments rarely choose fiscal austerity voluntarily. Higher real rates combined with enormous demand from the public sector and AI capital mean other areas will experience a degree of "crowding out." This effect may already be visible in broader market de-rating—stock price performance has begun to lag behind upward revisions in earnings per share. Goldman Sachs data also shows that when 10-year yield moves exceed two standard deviations, it tends to weigh significantly on equities.
The real trigger risk
The Market Ear emphasizes that for equities, the speed of rate changes matters more than the direction itself, at least over the short to medium term. Currently, the divergence between the MOVE index—a measure of rate volatility—and the S&P 500 is already quite pronounced, but rate volatility has yet to experience a true spike. Analysts suggest closely monitoring rate volatility dynamics—if this indicator breaks out, it would be a significant signal for a repricing of equity risk. With implied volatility on S&P 500 options at its lowest since January, the cost of hedging equity risk through options remains relatively inexpensive. The Market Ear advises investors to make good use of this window.
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