CIO Weekly: Why Rising Real Yields Are the Real Threat to Stocks

Real yields, not inflation alone, are the market's pressure point

Inflation headlines have dominated the conversation, but the deeper issue for stocks is real yields. RSM notes that real yields across the American maturity spectrum have been increasing as investors price in higher inflation risks, fiscal concerns, and competition for capital. That matters because real yields better reflect the actual cost of capital: when they rise, the present value of future earnings tends to fall.

Strong growth data have not only pushed yields higher; they have also driven a sharp repricing of the Fed policy path. That backdrop makes the bullish case more selective, not automatically invalid. J.P. Morgan still sees double-digit gains across developed and emerging markets, supported in part by AI-driven investment and resilient growth. The key point is that real yields sit underneath both the bullish and bearish cases.

The rise in real yields has persisted through multiple shocks

This has not looked like a routine volatility spike. Real yields kept climbing even as geopolitical stress hit the market in March. Annaly noted that a significant repricing of interest rates occurred alongside tighter financial conditions as the Iran conflict disrupted oil markets and weighed on risk sentiment. If the move were only a headline-driven overreaction, real yields likely would have eased as fears rose. Instead, the pressure held.

The long end of the curve remains elevated

The broader backdrop is still firm. The 10-year Treasury yield is at 4.75%, above both its level a year ago and its long-term average of 4.25%. That means the benchmark rate used to value equities, housing, and corporate investment is already well above normal.

Then came the July inflation data. CPI rose 3.5% annually, cooler than many expected, but the yield reaction told a more nuanced story. The 2-year Treasury fell more than 7 basis points, while the 10-year Treasury fell less than 2 basis points. The short end responded to softer headlines and Fed expectations; the long end remained comparatively firm.

The debate is whether higher real yields are temporary or structural

Bulls can argue that July showed inflation cooling, which would make the recent rate surge more cyclical than permanent. Bears see the opposite: a higher-real-rate regime shaped by stronger growth, fiscal issuance, and tech spending tied to AI infrastructure.

My view is that the market is no longer dealing with a simple temporary spike. Whether the move is framed as inflation expectations, fiscal supply, or financing demand for data centers, the practical effect is the same: the cost of capital is moving higher. For stocks, that deserves more attention than any single headline inflation print.