Stocks Rise as Supreme Court Tariff Ruling Boosts Long-Term Profit Outlook

U.S. stocks closed higher Friday after a late-week rally, as investors weighed the longer-term implications of the Supreme Court’s decision striking down former President Donald Trump’s global tariffs.

The Dow Jones Industrial Average rose 230.81 points, or 0.47%, to 49,626.0. The S&P 500 gained 47.62 points, or 0.69%, to 6,909.51. The Nasdaq Composite advanced 203.34 points, or 0.90%, to 22,886.1, while the Russell 2000 was flat and edged up 0.03 points, or 0.01%, to 264.63.

The advance in large-cap and technology shares contrasted with the flat performance in small caps, suggesting investors favored companies with broader international exposure and higher earnings sensitivity to input costs.

The market reaction followed a 6–3 Supreme Court ruling that the International Emergency Economic Powers Act does not authorize broad-based import taxes, concluding that such authority rests with Congress, according to Reuters. The decision leaves open questions about how previously collected duties will be handled, raising the possibility of refund claims and administrative challenges, Reuters reported.

Eric Parnell, Chief Market Strategist at Great Valley Advisor Group, said the immediate market response was subdued but argued the longer-term implications are more constructive. “The market reaction initially after the announcement has been fairly muted, both for stocks and for bonds,” Mr. Parnell said in an interview with AInvest.

He contended that eliminating tariffs should gradually ease inflation pressures and support corporate margins. The tariffs had been “leading to higher inflation pressures, putting pressure on corporate profit margins,” and “leading higher costs to consumers,” he said.

Research from the Federal Reserve Bank of New York, published on its Liberty Street Economics blog, found that “nearly 90 percent of the tariffs’ economic burden fell on U.S. firms and consumers,” based on import data through November 2025. Mr. Parnell said Federal Reserve research indicates households absorbed the majority of the cost increases, even if price declines are unlikely to materialize quickly. Companies that have already raised prices may instead moderate future increases: “Maybe it’s just like, ‘okay, we’re going to slow the rate of price increases.’”

The ruling also carries fiscal consequences. A Penn-Wharton Budget Model analysis cited by Reuters estimated that more than $175 billion in tariff revenue could be at risk. Mr. Parnell said the decision “opened up a hole anywhere between $175 billion to $300 billion in the fiscal budget,” potentially requiring additional borrowing and influencing short-term rates.

Even so, he characterized the development as “a meaningful long-term positive” for equities, pointing to expectations for double-digit earnings growth in 2026 and 2027. “That is the mother’s milk for higher stock prices,” he said, adding that an economy that “has been growing well and has shown consistent growth,” combined with “persistently reasonable” inflation, supports a constructive backdrop.

For now, Friday’s gains suggest investors are beginning to price in the prospect of wider margins and steadier long-term borrowing costs as tariff-related distortions fade.