Stock Market Today: S&P 500 Records Best May in 30 Years Amid Optimism Over Tariff Relief
By Amalya Dubrovsky, Karen Friar, and Allie Canal | Updated May 30, 2025
In a strong finish to a volatile trading month, the S&P 500 marked its best May performance since 1990, fueled by Wall Street’s anticipation of easing trade tensions and potential tariff relief between the U.S. and China. Investors responded positively, resulting in solid gains across major equity indices despite ongoing geopolitical and trade uncertainties.
May Market Performance Highlights
The S&P 500 (^GSPC) rose over 6% in May, reaching its best monthly performance since November 2023. The Dow Jones Industrial Average (^DJI) added approximately 4%, while the tech-heavy Nasdaq Composite (^IXIC) surged nearly 10%, riding the wave of strength in technology stocks.
On Friday, the final trading day of May, the markets showed resilience despite intra-day fluctuations. The Nasdaq experienced a mild dip of 0.3% after initially declining more than 1.6%, the S&P 500 remained close to flat, and the Dow inched higher by 0.1%. These movements capped a robust month characterized by significant investor optimism.
Tariff Relief Hopes Amid Trade Negotiations
Market optimism has been largely driven by hopes that the U.S. and China will reach agreements to ease tariffs that have weighed on global trade and corporate profits. However, tensions between the world’s two largest economies remain delicate.
Bloomberg reported that the Trump administration intends to expand technology export restrictions targeting China. The proposal would close loopholes by requiring U.S. government licenses for transactions involving subsidiaries majority-owned by companies already blacklisted on the Entity List. This move aims to tighten controls over technology flows to China but also introduces additional uncertainty into trade relations.
In a recent Truth Social post, President Trump accused China of violating their trade agreement less than three weeks after a tariff truce was announced, signaling persistent tensions. Treasury Secretary Scott Bessent noted that trade talks are “a bit stalled,” highlighting the need for direct communication between President Trump and Chinese President Xi Jinping to break the impasse. Current disagreements revolve around advanced chip export curbs and visa restrictions.
Legal Developments Compound Uncertainty
Complicating matters further, U.S. trade policy is facing legal challenges. On Thursday, a U.S. appeals court temporarily halted a trade court’s block on President Trump’s global tariffs, providing the White House until the following Monday to respond. Meanwhile, the administration is exploring alternative strategies to implement tariffs, adding layers of complexity for businesses navigating the trade environment.
Inflation Trends Provide a Modest Boost
On the domestic front, inflation data offered a marginal positive catalyst. The latest report on the Personal Consumption Expenditures (PCE) index, the Federal Reserve’s preferred inflation measure, indicated that core inflation in April rose in line with expectations. This cooling in inflation momentum supports market sentiment by tempering fears of aggressive interest rate hikes.
Looking Ahead
Despite short-term volatility and unresolved trade tensions, the S&P 500’s strong May performance highlights investor willingness to look past current risks in anticipation of easing tariffs and sustained economic resilience. Market watchers will closely monitor upcoming policy announcements and further developments in U.S.-China relations as they hold significant sway over the trajectory of global markets.
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