Bond Yields Spike to 5.2%: Hartnett Warns AI Bull Run Faces Liquidity Crisis, Not Valuation Bubble

Woofun AI reports that Michael Hartnett, chief investment strategist at Bank of America, has identified the bond market as the primary existential threat to the ongoing AI bull run, rather than equity valuation bubbles. In a recent Flow Show report, Hartnett outlined a scenario where tightening financial conditions force the Federal Reserve into preemptive rate hikes, potentially triggering a deleveraging cycle across risk assets. This structural shift suggests that the sustainability of AI growth is no longer guaranteed by corporate profitability but is instead contingent on the availability of cheap capital, which is rapidly evaporating. The core thesis posits that the bond market’s distress will not self-correct, creating a feedback loop that could destabilize the broader equity market despite strong earnings reports from major technology firms.

The severity of this tightening is quantified by specific bond market indicators that have reached multi-year extremes. On July 27, the yield on 30-year U.S. Treasury bonds climbed to 5.2%, marking the highest level observed since June 2007.

Concurrently, the real yield surged to 3%, a peak not seen since November 2008. These macro-level indicators are mirrored in the corporate sector, where prices of U.S. tech bonds have collapsed to two-year lows. The convergence of these three data points—high nominal yields, elevated real yields, and depressed tech bond prices—signals a systematic rise in the cost of financing. This environment indicates that financial conditions are tightening to an extent that exceeds the supportive capacity of current corporate earnings, creating a divergence between fundamental performance and market valuation support.

Hartnett formalizes this dynamic through the "FCI > EPS" framework, asserting that the impact of Financial Conditions Index (FCI) tightening has surpassed the stabilizing effect of Earnings Per Share (EPS).

This shift in market concern has moved from questioning whether companies can generate profit to questioning who will fund their operations. Despite strong earnings reports from Google and Intel, chip stocks continued to be sold off, illustrating that profitability alone is insufficient to counteract funding pressures. The market is now scrutinizing the viability of expensive memory chips and unprofitable cutting-edge models, which rely heavily on continuous capital injection. If the bond market withdraws its support, the demand for these capital-intensive technologies faces an immediate liquidity crisis, rendering traditional earnings-based valuation models obsolete.

The implications for monetary policy are significant, with Hartnett predicting a series of aggressive rate hikes. His analysis projects that by 2026, central banks worldwide will have implemented 23 rate hikes, with Bank of America expecting an additional 18 before the end of the current year. Market pricing reflects this hawkish outlook, as the implied probability of a rate hike at the Federal Reserve’s meeting on July 29 has risen to 38%, while a hike at the September 16 meeting is already fully priced in. Hartnett provocatively suggests that it may be politically wiser for the Federal Reserve to raise rates immediately rather than waiting until September. This stance is influenced by the potential for a pro-market administration under Trump to tolerate rate hikes as a mechanism to "brake" the stock market and address anti-wealthy sentiment, thereby accepting short-term equity pain for long-term stability.

A critical paradox emerges from this dynamic: rising bond yields may force the Federal Reserve to raise rates to stabilize long-term interest rates, yet rate hikes are inherently detrimental to equity valuations. Hartnett warns investors to monitor the reversal of the bullish scenario where "rising bond yields and rising bank stocks" coexist. If this relationship inverts to "the higher the yields, the lower the bank stocks," it could trigger a widespread deleveraging of risk assets. In such a scenario, the dollar is identified as the optimal hedge against the Federal Reserve’s hawkish stance. The "Anything But Bonds" bull market, which has characterized recent equity performance, is vulnerable to this interest rate shock, as stock investors have yet to fully recognize the threat posed by elevated rate levels to their portfolios.

The credit risk associated with hyperscalers has deteriorated sharply, reflecting skepticism regarding the return on investment (ROI) of the AI spending spree. Credit default swaps (CDS) for these companies have reached record levels, and bondholders are increasingly using their voting rights to challenge the profitability of massive AI expenditures. Credit spreads have widened significantly, and concessions in bond issuances continue to increase, indicating a loss of confidence among lenders. While Google and Tesla are viewed as benchmarks for ROI, the broader market remains unconvinced that the current spending trajectory is sustainable. The core question is whether bondholders will continue to fund the AI boom, or if they will withdraw capital, leaving hyperscalers unable to finance the demand for cutting-edge models and memory chips.

Woofun AI data shows that market divergence is further evidenced by the performance of "blue-collar semiconductors," which Hartnett views as leading indicators of the industrial cycle. This group, comprising Texas Instruments, Analog Devices, NXP, Microchip, ON Semiconductor, STMicroelectronics, Infineon, and Monolithic Power Systems, has fallen 21% from its June high. Brian Garrett, a top derivatives trader at Goldman Sachs, has echoed these concerns, warning that pain in the credit market will intensify and that the S&P 500 index increasingly fails to represent the performance of ordinary stocks. The market is experiencing low correlation and high dispersion, with hyperscalers struggling to hold onto the 200-day moving average support level of $65. This divergence challenges the widespread consensus of prosperity, suggesting that the rally is concentrated in a narrow segment of the market while broader indicators weaken.

Investor positioning reflects a lagging recognition of these risks, with Bank of America’s July fund manager survey showing that overallocation to industrial stocks is at its highest level since July 2021. In response to these signals, Hartnett recommends a defensive trading strategy for the short term. He advises going long on defensive stocks, high-dividend stocks, and long-duration bonds, while shorting bank stocks, brokerage stocks, tech stocks, and industrial stocks. This positioning is designed to cope with a potential reversal in the "prosperity" outlook, as bank stocks have seen heavy inflows recently and may be vulnerable to the aforementioned yield-driven deleveraging. The strategy prioritizes capital preservation and yield generation over growth exposure, acknowledging the heightened uncertainty in the financial conditions landscape.

The macro backdrop is characterized by supply constraints, fiscal deficits, and geopolitical factors that exacerbate market volatility. Hartnett describes the 2020s as an era of political populism, where globalization gives way to national security, and excess fiscal spending shifts to excess AI spending. The independence of the Federal Reserve is yielding to political compromises, and American exceptionalism is evolving toward global rebalancing.

Supply-side pressures are evident in immigration controls reducing labor supply, with U.S. initial claims for unemployment benefits falling to the lowest level since 1969. Protectionism and tariffs restrict imported supply, with the U.S. planning new tariffs on 60 trading partners. Geopolitical disruptions affect oil supply, as approximately 6.4 billion barrels out of roughly 8 billion barrels of oil transported by sea pass through vulnerable chokepoints like the Strait of Hormuz and the Strait of Mandeb.

Meanwhile, the U.S. government runs a fiscal deficit of $2 trillion per year, with annual interest payments reaching $1 trillion. Even with $250 billion in tariff revenue over the past 12 months, this gap remains difficult to cover. Companies with negative free cash flow are reducing stock buybacks, further squeezing equity supply.

Looking ahead, Hartnett predicts that gold and Bitcoin are quietly reaching their bottom by 2026, positioning them as key hedges against monetary instability. In the second half of the 2020s, bank stock indices representing "Main Street" are expected to outperform those of brokerage firms and private equity firms representing "Wall Street." Additionally, Hong Kong real estate stocks are identified as attractive long-term buying opportunities, currently priced at levels similar to 30 years ago. Hartnett intends to buy these stocks on dips during any declines caused by Federal Reserve tightening or a currency crisis triggered by the BOJ. This long-term outlook suggests a rotation away from growth-oriented assets toward value and defensive positions, driven by the persistent pressure from bond markets and the evolving macroeconomic landscape.