The Dow Jones climbed 0.4% as the Supreme Court delivered a 6–3 decision blocking Trump-era tariffs, triggering a swift rally across U.S. equities. With the 10-year yield near 4.08% and oil hovering around $66, traders recalibrated growth expectations in a market already on edge from hotter inflation data.
U.S. stocks flipped firmly into positive territory Friday morning after the Supreme Court delivered a sweeping decision against former President Donald Trump’s tariffs, giving Wall Street a fresh macro catalyst just as investors were digesting hotter-than-expected inflation data and weaker GDP figures. The Dow Jones Industrial Average turned higher in live trade, reinforcing the market’s ability to absorb mixed economic signals when policy risk eases.
The Supreme Court ruled 6–3 that the International Emergency Economic Powers Act “does not authorize the President to impose tariffs.” The decision effectively dismantles a key legal foundation for the prior tariff framework, immediately altering assumptions around trade friction, corporate cost pressures, and supply-chain visibility.
Major indexes rebound despite inflation, weak GDP
By mid-morning, the Dow Jones Industrial Average gained 0.4%. The S&P 500 also advanced 0.4%, while the tech-heavy Nasdaq Composite rose 0.6%. Small caps joined the move higher, with the Russell 2000 up 0.3%.
The rally was notable because it came even as investors absorbed data showing inflation running hotter than expected and economic growth coming in weaker than forecast. Under normal circumstances, that combination can weigh heavily on equities — persistent inflation threatens rate relief, while soft GDP pressures earnings expectations. Instead, the tariff ruling offered a powerful offset.
Markets often trade on the balance of risks rather than isolated data points. By removing uncertainty around tariff authority, the court decision improved the forward visibility for manufacturers, retailers, and multinational firms sensitive to import costs. That recalibration appeared to outweigh immediate macro concerns.
Rates, oil and crypto in focus
Bond markets reflected a more cautious tone beneath the equity rally. The 10-year Treasury yield ticked up to 4.08%, signaling that inflation expectations and rate sensitivity remain very much in play. A higher yield environment typically acts as a headwind for equities, especially growth stocks, making Friday’s advance more technically significant.
In commodities, oil prices dipped near $66.25 per barrel, while Bitcoin traded slightly higher around $67,000. The stabilization in energy prices may have contributed to the market’s willingness to look past hotter inflation prints, as falling crude can eventually temper headline CPI readings.
Stock movers: Big winners and steep losers
Individual stocks saw dramatic moves beneath the index-level rally.
Comfort Systems (FIX), designated as an industry leader in the building systems space, surged more than 4% after posting standout fourth-quarter results. Quarterly profit more than doubled year over year, while revenue climbed 42% to just over $2.6 billion. The company also increased its quarterly dividend to $0.70 per share from $0.60. Demand tied to data-center expansion and AI-driven infrastructure growth continues to fuel a new earnings acceleration phase for the HVAC specialist.
Guardant Health (GH) gained more than 3%, though it came off session highs. The cancer diagnostics firm reported its third consecutive quarter of revenue growth above 30% and issued full-year guidance that slightly exceeded expectations. Momentum in precision oncology testing remains intact, reinforcing investor confidence in recurring revenue visibility.
In sharp contrast, Grail (GRAL) plunged more than 40%. Shares collapsed after the company disclosed that a key clinical trial for its early cancer detection test, Galleri, failed to meet its primary endpoint. The setback cast doubt on the commercialization timeline and significantly repriced growth expectations in the early-detection diagnostics segment.
Vicor (VICR) provided another example of intraday volatility. The stock initially dropped more than 15% before reversing higher and reclaiming its 50-day moving average. The company reported a 339% surge in quarterly profit. However, revenue growth decelerated compared to the previous quarter, even though it broadly met consensus estimates. Vicor operates within the Electronics-Parts industry group, alongside artificial intelligence infrastructure players such as Coherent, Amphenol, and Bel Fuse — a space that has seen powerful multi-quarter momentum driven by AI capital expenditures.
Why the tariff ruling mattered so much
The Supreme Court’s decision strikes at the core of executive tariff authority under emergency powers legislation. For markets, this is more than a legal debate. Tariffs directly influence input costs, consumer pricing, global supply chains, and corporate margin assumptions. Removing uncertainty in that domain reduces one layer of policy-driven volatility.
Industrials, import-sensitive retailers, and multinational firms with global sourcing stand to benefit most from reduced tariff risk. The move also subtly alters inflation expectations over the medium term, since tariffs often function as indirect taxes that elevate prices across supply chains.
The broader macro tension remains
Despite the bullish equity response, the macro backdrop remains complex. Hotter-than-expected inflation complicates the Federal Reserve’s rate path, while weaker GDP growth raises questions about earnings durability. The equity market’s ability to climb in the face of both pressures suggests that investors are prioritizing reduced policy risk over immediate data stress.
Still, the 10-year yield at 4.08% serves as a reminder that rate sensitivity has not disappeared. If inflation remains sticky, bond markets may demand tighter financial conditions for longer, potentially limiting how far equities can stretch toward new highs.
Market tone and what comes next
Friday’s session demonstrated a classic repricing dynamic. Remove a major uncertainty, and investors quickly adjust models, discount rates, and earnings assumptions. The Dow’s shift higher reflects that recalibration.
Going forward, traders will continue monitoring inflation trajectories, GDP revisions, corporate guidance updates, and bond yields. If growth stabilizes while inflation moderates, the tariff ruling could be viewed as a turning point that reinforced risk appetite. If inflation stays elevated, equity gains may face resistance despite reduced trade tensions.
For now, the scoreboard reads: Dow up 0.4%, S&P 500 up 0.4%, Nasdaq up 0.6%, small caps higher, yields firm, oil easing, and crypto steady. Beneath those headline numbers, however, the market continues to juggle inflation pressure, growth uncertainty, and shifting policy dynamics — all while recalibrating to a major Supreme Court decision that reshaped the trade outlook in real time.
