CoreWeave and Super Micro drive US stock rally on soft inflation

Wall Street moved higher on Wednesday, August 12, 2026, after the July consumer-price index matched market forecasts, easing worries about another Federal Reserve interest rate increase and unleashing a surge in artificial intelligence-related equities. Analytics Insight reported a roughly 20% jump in CoreWeave shares, while Coinpaper noted that Super Micro Computer climbed more than 16% after forecasting fiscal 2027 revenue above Wall Street estimates. Both companies anchored a broader technology rally that nudged the Nasdaq within 2% of its record high.

The market's reaction followed a confluence of three forces: a consumer price index print that left the annual headline inflation rate at 3.4% and the core inflation rate at its lowest level since March 2021, a market-wide belief that the central bank will pause rate increases at its upcoming meeting, and earnings from artificial intelligence infrastructure firms that signaled accelerating demand. By late morning, the Nasdaq Composite gained 0.64% to 26,560, the S&P 500 climbed 0.33% to 7,753, and the Dow Jones Industrial Average added 0.21% to 53,900, according to Analytics Insight.

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Inflation data removes the rate-hike cloud

Both sources reported that the consumer price index increased 0.1% month-over-month and 3.4% year-over-year in July, matching market forecasts and easing from June's annual headline rate of 3.5%. Core CPI, which strips out food and energy, rose 0.2% for the month and slowed to an annual 2.5%, marking the slowest reading since March 2021. Coinpaper noted that the report gave investors some relief after higher energy prices had revived concerns that the Fed could resume rate increases. Reinforcing that narrative, Morgan Stanley Wealth Management strategist Ellen Zentner told Analytics Insight,

"In-line inflation will keep the ‘no need to hike rates’ narrative intact."

Ellen Zentner, Morgan Stanley Wealth Management strategist, via Analytics Insight

Zentner added that another inflation report will arrive before the September meeting.

The market’s reaction showed up immediately across financial indicators. CME FedWatch data placed the probability of the Federal Reserve keeping interest rates unchanged at its September meeting in the 55% to 58% range, with the current federal funds target range standing at 3.50% to 3.75%. Treasury yields slipped following the report: Analytics Insight noted the two-year yield fell four basis points to 4.17%, while Coinpaper observed the two-year yield around 4.18% and the ten-year yield near 4.66%.

AI infrastructure firms become the rally’s engine room

CoreWeave posted second-quarter results that beat expectations, with revenue doubling year-over-year and its adjusted operating margin reaching 5%. The AI cloud provider also raised its annual capital-spending forecast, expecting 2026 capital expenditure to land between $35 billion and $39 billion, alongside reporting a revenue backlog increase to $104.2 billion in the second quarter, excluding more than $25 billion of new commitments secured early in the current quarter. Those figures propelled the stock up about 20%, according to Analytics Insight.

Super Micro Computer joined the advance by issuing an upbeat fiscal 2027 revenue forecast that topped Wall Street estimates, lifting its share price more than 16%. Other artificial intelligence and technology names reinforced the trend during the same session. Nvidia shares advanced 2%, Micron Technology surged 4.4%, and Broadcom climbed 1.4%, while Dell Technologies and Cisco Systems also traded higher. Analytics Insight reported that the Philadelphia Semiconductor Index gained about 3% and the S&P 500 information technology sector rose 1.2%.

Market breadth remains uneven

Despite the technology surge, both sources warned that the rally’s breadth was thin. Coinpaper recorded that at 10:02 a.m. Eastern time, only 179 S&P 500 companies were higher and just four of the index’s eleven sectors were advancing, while the Dow Jones pared its advance to just 19 points. The Dow Jones Industrial Average lagged the Nasdaq, and a chart from BraVoCycles Newsletter highlighted that the Dow Jones Transportation Average was trending lower while the Industrial Average remained comparatively stronger. Under traditional Dow Theory, such a divergence serves as a potential warning sign unless confirmed by both averages.

Analytics Insight reported broader underlying figures showing that advancing shares outnumbered declining stocks by 1.54 to one on the New York Stock Exchange, while Nasdaq advancers led decliners by 1.53 to one. The Nasdaq recorded 46 new 52-week highs and 39 new lows during the session.

What to watch next

• July Producer Price Index: Scheduled for release on Thursday, August 13, 2026, the report will provide further evidence on wholesale inflation pressures.
• Nvidia’s fiscal second-quarter earnings: Set for August 26, 2026, the results will test whether artificial intelligence spending and accelerated computing demand continue to drive sector momentum.
• Federal Reserve September policy meeting: Scheduled for September 15–16, 2026, policymakers will decide whether to leave the federal funds rate unchanged at 3.50% to 3.75% or adjust rates based on incoming economic data.
• Transportation-sector health: Investors will monitor the Dow Jones Transportation Average to see if it recovers or confirms the bearish divergence noted against the Industrials.

Timeline of Wednesday’s market drivers

Time (Eastern)	Event	Market impact
09:38	S&P 500 rose 0.33% to 7,753.74, Dow gained 0.21% to 53,902.38, Nasdaq climbed 0.64% to 26,614.17	Initial gains following softer inflation data
10:02	S&P 500 up around 0.3%; Dow pares advance to 19 points	Narrow market breadth and sector divergence emerge
11:16	Nvidia trades near $223.80, up about 2.9%	AI stocks lift technology sector
11:30	Nasdaq Composite gains 0.64% to 26,560; S&P 500 at 7,753; Dow at 53,900	Tech rally brings Nasdaq within 2% of record high
Afternoon	CoreWeave jumps ~20%; Super Micro climbs >16%	AI infrastructure earnings power broader technology gains

The convergence of softer inflation data and strong artificial intelligence earnings created a clear catalyst for the market’s upward swing. As analysts at both outlets note, the near-term stock market picture remains constructive but uneven, with the S&P 500 holding above the breakout area around 7,618 while weak breadth and transportation-sector divergence keep investors cautious.