Long-term interest rates quietly break through, this time the Federal Reserve may be powerless

Yields on long-term U.S. Treasury bonds are quietly approaching a key technical threshold, and this time the driving force may not be monetary policy missteps, but rather a structural oversupply—combined expansions of sovereign debt and AI capital expenditure are creating unprecedented pressure in the bond market.

The 10-year U.S. Treasury yield is threatening to break above the significant resistance level of 4.8%, and the 30-year yield has already surpassed its long-term technical resistance range.

Goldman Sachs Delta-One trading desk head Rich Privorotsky has issued a noteworthy warning: the upward move in long-end rates is increasingly a supply problem rather than a central bank discipline issue—massive sovereign deficits combined with annual AI capital expenditures possibly exceeding $1 trillion, mostly financed through the debt market, means the market has to absorb too much “paper”.

Currently, rate volatility remains relatively contained, and the stock market has yet to show a full reaction to rising rates. However, analysts warn that if rate volatility truly spikes, equity market corrections could far exceed current market pricing. Meanwhile, implied volatility for S&P 500 options remains at its lowest level since January, making hedging costs relatively cheap—a window that may not last long.

Long-end Yields Near a Critical Breakout Point

From a technical perspective, the 10-year Treasury yield is at a critical juncture. If the closing price stays above 4.8%, the market could face a genuine squeeze rally.

According to The Market Ear’s analysis, after a prolonged period of range-bound trading, the market has developed a complex psychological structure. Following such a lengthy consolidation, a significant breakout often creates a “vacuum” in which the risk of accelerated price moves notably increases.

The 30-year Treasury’s movement is even more straightforward.

Long-term charts show that the 30-year yield has broken through multiple important long-term resistance levels. The Market Ear notes, this is not a battle among short-term traders, but if this breakout is confirmed and sustained, the subsequent trend could "look rather ugly".

Double Pressure from the AI Debt Wave and Sovereign Deficits

Privorotsky’s core argument is that the current rise in long-term rates is rooted in structural imbalance on the supply side, rather than a repricing of the Federal Reserve’s policy stance by the market.

On the data front, AI-related debt issuance has grown explosively. According to Goldman Sachs, since the start of this year, the combined funding in investment-grade, high-yield, and leveraged loan markets for AI-related companies worldwide has reached roughly $489 billion, already far exceeding the annual total of $322 billion for all of 2025. More broadly, the size of dollar-denominated investment-grade bond issuance this year has surpassed $1.5 trillion and is on track to beat the pandemic-era historical record by 2026.

Meanwhile, sovereign deficits remain high.

Privorotsky points out that although economic data has softened and short-end yields have outperformed, hard constraints remain: the massive sovereign deficit and potentially over $1 trillion in annual AI capital expenditure together continue to exert supply pressure on the bond market. In this context, even if economic data weakens, the Federal Reserve may be forced to hike rates in a weak-data environment to re-anchor long-term yields and flatten the yield curve.

Valuation Pressure: Can Tech Stocks’ “Immunity” Continue?

Even though the 10-year Treasury yield has risen from below 4% since the end of February to its current level, tech stocks have shown surprising resilience, and the divergence between the Nasdaq 100 index and the 10-year yield has widened to a very notable degree.

Privorotsky believes this divergence will eventually be corrected through a compression in valuation multiples.

His logic is: if the market requires public or private sector spending cuts, adjustment is more likely to fall on the private sector, as governments rarely voluntarily choose fiscal tightening. Higher real rates, along with massive demand from the public sector and AI capital, mean some degree of "crowding out" will occur in other areas. This effect may already be manifesting in the broader market de-rating—share prices have begun lagging behind upward revisions in per-share earnings.

Goldman Sachs data also shows that when the increase in the 10-year yield exceeds two standard deviations, it typically puts obvious pressure on the stock market.

The True Risk Trigger

The Market Ear emphasizes that for the stock market, the speed of rate changes is more critical than the direction itself, at least in the short to medium term. At present, the divergence between the MOVE index (which measures rate volatility) and the S&P 500 is quite pronounced, but there has yet to be a true spike in rate volatility.

Analysts suggest closely watching the trajectory of rate volatility—once this indicator breaks out, it would be a significant signal for the stock market to reprice risk.

Currently, implied volatility for S&P 500 options is at its lowest level since January, and the cost of hedging equity risk via options remains relatively low. The Market Ear advises investors to make good use of this window.