Morgan Stanley: The main risk in 2026 is that the "AI capital frenzy fails to boost productivity"

An AI-driven capital expenditure boom is taking shape, but there are also significant risks lurking behind it.

Recently, Morgan Stanley painted an overall positive picture in its 2026 outlook report, believing that the AI-driven capital spending boom will be the main driver of the market.

However, the bank also issued a key long-term warning: If this trillion-dollar investment fails to promptly translate into substantial productivity growth, the resulting increase in leverage and credit concerns could become the main risks facing the market.

The $3 Trillion AI-Led Capital Expenditure Wave

Strategist Michael Zezas stated in the report that the world is responding to a shift in U.S. policy. U.S. policy has moved from past free trade to a new consensus centered on industrial policy, trade barriers, and strategic investment. This shift is fueling a strong recovery in corporate capital expenditure.

The report notes that with corporate balance sheets flush with cash, a favorable economic environment, and promising prospects for AI technology, a wave of capital spending is forming.

Morgan Stanley expects global AI-related capital expenditure to approach $3 trillion, of which about $1.5 trillion will need to be financed through public and private credit markets.

This investment boom is expected to have a direct impact on the real economy, becoming a key engine of economic growth in the coming years. The bank’s economic team predicts that AI-related capital spending alone will contribute 0.4 percentage points to the estimated 1.8% GDP growth for the U.S. in 2026.

Investment Opportunities: Broad Layout from Credit to Equity, S&P Target at 7800 Points

Morgan Stanley believes that the opportunities brought by this policy-driven investment cycle are not limited to just a few leading AI companies, but will widely benefit multiple industries.

The bank expects the S&P 500 index to reach a target of 7800 points by the end of 2026, with overall returns driven by broad-based earnings growth across industries and company sizes.

In the stock market, industrial firms related to data centers and onshoring manufacturing, component suppliers in the tech sector, companies actively adopting AI technologies, and certain financial institutions playing an intermediary role in the capex cycle are all expected to benefit.

In the credit market, the report predicts that high-yield bonds will outperform investment-grade bonds. The reason is that AI financing demand will sharply push up issuance volumes for U.S. investment-grade bonds, creating technical pressure and limiting returns. In contrast, high-yield bond issuance remains lighter and can gain stronger earnings support from overall economic health, with an expected total return of about 6-7%.

The Road to Returns Is Uneven: Beware Trade and Rate Volatility

Although the outlook for 2026 is generally positive, Morgan Stanley warns that the market digesting the shock of earlier policies may trigger cyclical pressure, and the path ahead is not all smooth. Trade policy is the main source of “noise.” The report points out that while tariff uncertainty has peaked, it is far from resolved.

The interest rate market will also reflect this tension. The report predicts that the Federal Reserve may start cutting rates in early 2026, then stabilize them near neutral, pushing the 10-year U.S. Treasury yield to 3.75% mid-year and rising to 4.05% by year-end, with the 2-year/10-year Treasury yield curve steepening to about 145 basis points. This curve is favorable for returns but also very fragile.

In addition, the U.S. Dollar Index (DXY) is expected to fall to around 94 in the first half of 2026, then rebound to near 99 as growth momentum picks up again. However, if political or trade risks flare up, its path could be more volatile than expected.

Core Risk of 2026: Productivity “Disillusionment”

Morgan Stanley points out clearly that the main risk faced by its constructive outlook is the failure of the AI-driven capex boom to yield meaningful productivity gains in time. If this happens, the rise in corporate leverage will outpace output growth, stoking concerns in the credit market and putting pressure on the market.

However, the report also emphasizes that the likelihood of this risk materializing in 2026 is low. Corporate fundamentals remain strong: balance sheets are healthy, cash levels are high, and leverage is low. Current private credit indicators also suggest risk is under control, not showing signs of late-cycle excess. Therefore, Morgan Stanley does not see this as an imminent crisis for 2026.

Still, the bank stresses that remaining vigilant starting from 2026 is essential. Investors need to closely watch corporate leverage, market valuations, and whether the investment wave is translating into real output. If these indicators begin to flash “yellow,” Morgan Stanley’s investment advice will also adjust accordingly.

Risk Warning and DisclaimerThe market has risks, and investments require caution. This article does not constitute personal investment advice, nor does it consider the special investment objectives, financial situation, or needs of individual users. Users should consider whether any opinions, viewpoints, or conclusions in this article fit their specific circumstances. All investments based on this are at your own risk.