Wall Street staged a broad rally on Wednesday, propelled by a benign inflation report and a resurgence in artificial intelligence stocks following a series of stellar earnings. The S&P 500 climbed 0.3% to close at 7,748, hovering just below its all-time high, while the tech-heavy Nasdaq Composite surged 0.5% to 26,588. The Dow Jones Industrial Average, however, edged down 0.04% to 53,770, erasing early gains in the final moments of trading. The session underscored a market increasingly confident that the Federal Reserve can tame inflation without derailing economic growth, while the AI trade continues to redefine sector leadership.
Mild CPI Data Fuels Rate Cut Optimism
The catalyst for Wednesday’s positive open was the July Consumer Price Index (CPI) report from the Bureau of Labor Statistics. The headline CPI rose just 0.1% month over month and was up 3.4% year over year, matching economists’ forecasts. Crucially, the annual rate eased from June’s 3.5% gain, marking a notable deceleration. Cooling energy prices were a primary driver of the subdued headline figure, but the core CPI—which strips out volatile food and energy costs—also came in softer than expected. Core prices increased 0.2% on a monthly basis and stood 2.5% higher than a year ago, down from June’s 2.6% annual rise.
This data, while still above the Federal Reserve’s 2% target, strengthened the case for the central bank to hold interest rates steady at its next meeting. According to the CME Group’s FedWatch Tool, futures traders now see a 60% probability that the Fed will keep the federal funds rate unchanged in September, up from 52% just a day earlier. Daniela Hathorn, senior market analyst at Capital.com, characterized the report as “helpful rather than an all-clear,” noting that inflation is moving in the right direction. She added that recent weakness in the labor market gives policymakers less reason to consider another rate hike, though she cautioned that a “premature victory lap” on inflation would be unwise.
AI Earnings Ignite Red-Hot Rally in Tech Stocks
While the macro data set the stage, it was the earnings reports from several artificial intelligence heavyweights that truly electrified the market. Super Micro Computer (SMCI) emerged as the best-performing stock in the S&P 500, surging 19% after the company reported fiscal fourth-quarter earnings that exceeded expectations. The AI server and infrastructure provider also issued robust guidance for the fiscal 2027 first quarter, citing a massive surge in demand. CEO Charles Liang highlighted that the company added “several hundred enterprise and other customers in the past year, generated more than $60 billion in new orders, and booked record backlog entering fiscal 2027.”
CoreWeave (CRWV), an AI cloud platform, vaulted 19.3% after revealing that its second-quarter revenue more than doubled year over year. The company also guided for similar strength in the third quarter, reinforcing the narrative that enterprise AI adoption is accelerating at an unprecedented pace. Analyst Gregg Moskowitz of Mizuho Americas noted that CoreWeave is “positioned to capture meaningful share of an AI cloud provider market growing at a server-melting pace.” However, he also cautioned that the stock’s risk/reward profile is “somewhat balanced given some ongoing uncertainty about the magnitude of CRWV’s revenue upside over the near term.”
Nebius Group Posts Stunning 34% Gain
The most dramatic move of the day belonged to Nebius Group (NBIS), an AI cloud infrastructure company, which rocketed 34.1% higher. The company reported that its second-quarter revenue surged more than fivefold to $582.3 million, a result that stunned analysts. Luke Lango, lead technology and cryptocurrency analyst at InvestorPlace, described the numbers as evidence that “AI compute demand is insatiable and pricing is strengthening, not weakening.” A significant short squeeze may have amplified Nebius’s rally. Nearly 25% of NBIS stock is sold short, meaning that when the price began to climb, short sellers were forced to buy back shares to cover their positions, adding fuel to the fire.
Market Breadth and Sector Performance
The gains were not limited to the AI sector. The S&P 500’s modest advance was broad-based, with seven of its 11 sectors finishing in positive territory. Technology and communication services led the charge, buoyed by the AI earnings momentum. Energy stocks also performed well, benefiting from a modest uptick in oil prices. In contrast, defensive sectors such as utilities and consumer staples lagged, as rising risk appetite pushed investors away from safety plays. The VIX, Wall Street’s “fear gauge,” dipped below 14, signaling a return of calm after weeks of volatility driven by geopolitical tensions and recession fears.
The Dow’s slight decline, despite the overall positive tone, was largely due to weakness in a handful of blue-chip components. Shares of Johnson & Johnson and Procter & Gamble edged lower, reflecting a rotation out of defensive names and into growth stocks. The divergence between the Dow and the Nasdaq highlights a market that is increasingly rewarding companies with exposure to structural growth trends, particularly artificial intelligence, while punishing those that lack a clear AI narrative.
The July CPI report has effectively lowered the odds of a near-term rate hike, giving the Fed breathing room to assess incoming data. With inflation cooling gradually and the labor market showing signs of softening, the central bank is likely to maintain a “wait-and-see” approach for the remainder of the year. Meanwhile, the AI rally appears far from exhausted, as evidenced by the massive revenue growth reported by Super Micro, CoreWeave, and Nebius. These companies are not just riding a hype cycle; they are delivering tangible financial results that underscore the transformative potential of AI across industries.
Investors are now closely watching retail sales and producer price data due later this week for further confirmation of a soft landing. If the economy continues to generate modest growth without reigniting inflation, the stage could be set for the S&P 500 to challenge its record closing high in the coming sessions. The combination of easing price pressures and booming AI adoption is providing a powerful tailwind for equities, even as risks such as geopolitical unrest and elevated interest rates linger in the background.
The day’s trading activity reaffirmed a central theme of 2025: that AI-related companies are emerging as the primary drivers of market returns. The 19% jump in Super Micro Computer and the 34% surge in Nebius Group were not isolated events, but rather signals of a structural shift in how businesses allocate capital. As corporations race to build out AI infrastructure and deploy machine learning tools, companies like CoreWeave and Nebius are becoming indispensable partners in this digital transformation. Their ability to generate exponential revenue growth, even in a higher-interest-rate environment, suggests that the AI boom has considerable runway ahead.
For the broader market, the path of least resistance appears to be higher, supported by a more accommodating Fed and a thriving tech sector. While the Dow’s slight dip on Wednesday serves as a reminder that the rally is not universal, the resilience of the S&P 500 and Nasdaq underscores the strength of the underlying economic fundamentals. As long as inflation continues its gradual decline and corporate earnings remain robust, the S&P 500’s push toward a new all-time high seems not just possible, but probable.
