New Logic for the Stock Market in 2026: Global Market Restructuring Under the Trump Policy Cycle

In 2026, global stock markets are shifting from "policy expectation trading" to "economic reality verification." The market's immediate reaction to the Trump administration's executive orders and social media statements is gradually dulling, replaced by a complex assessment of policy consequences. Fiscal space, the inflation path, interest rate peaks, capital flow directions, and productivity prospects together constitute new variables affecting asset prices. This article will break down the global macroeconomic logic behind these variables.

The Boundaries of Fiscal Expansion and the Anchor of Long-Term Interest Rates

The Trump administration's tax cuts and infrastructure spending plans continue the traditional approach of trading fiscal expansion for economic growth. However, unlike the previous cycle, the supply elasticity of U.S. federal debt has declined significantly. When the market begins to discuss fiscal deficit monetization and debt sustainability, long-term Treasury yields are no longer a simple function of inflation but become part of the fiscal risk premium. For stock markets, a rise in the discount rate will directly compress valuation space, especially for long-duration growth stocks. Therefore, the most critical indicator for the market in 2026 may not be quarterly earnings, but the trajectory of the U.S. 10-year Treasury yield.

Tariffs Evolve from Trade Tools into Inflation Variables

By 2026, tariff policy has moved beyond the simple goal of "trade rebalancing" to become an endogenous factor in the domestic price system. When tariffs on imported goods are raised, the impact transmits step by step along the supply chain and ultimately shows up in core goods and services prices. The Federal Reserve therefore faces a difficult decision environment: if it views tariffs as a one-time supply shock, it may maintain accommodation; if it observes inflation expectations becoming unanchored, it will have to tighten again. This policy dilemma will intensify volatility in the interest rate path and transmit to global risk assets.

Interest Rate Peaks and Global Capital Reallocation

The U.S. interest rate level remains the anchor for global asset pricing. When the Fed's policy path is no longer clear, the ordering of capital flows will change. On the one hand, dollar assets attract inflows due to their relative yield appeal; on the other hand, emerging markets are forced to hedge capital outflows with higher interest rates, thereby suppressing their domestic growth. Monetary policy in Europe and Asia may diverge due to their respective inflation and growth conditions, which weakens the pattern of global stock markets rising and falling together and increases opportunities for regional alpha.

The AI Productivity Proposition and Index Concentration Risk

The Trump administration's attitude toward the technology sector, especially its support for AI infrastructure and energy supply, provides room for imagination regarding productivity growth. But the realization of productivity improvements takes time, and stock market reactions often lead. The current market has already priced AI-related assets fairly fully, with index returns highly concentrated in a few leading companies. This means that once actual data fails to match expectations, volatility will spread from individual stocks to the entire index. Long-term investors must distinguish the gap between the "AI narrative" and "AI cash flow."

Conclusion: Finding a Structural Anchor amid Uncertainty

In 2026, the defining feature of markets is no longer information scarcity, but divergence in how information is interpreted. Policy itself does not determine direction; rather, the actual efficiency of policy implementation and macroeconomic constraints will decide its ultimate impact. For global investors, instead of predicting the next policy headline, it is wiser to examine their portfolios' exposure to interest rate, exchange rate, and productivity risks. At the intersection of the policy cycle and the long-wave cycle, maintaining moderate diversification and the capacity to rebalance matters more than pursuing one-sided bets.