Stock Market Summary – August 29, 2025

Despite experiencing a challenging week, the stock market made substantial gains in August. However, the week ended with a dip for the S&P 500, likely breaking its four-week winning streak. Nevertheless, the S&P 500 advanced around 2% for the month, marking four consecutive months of gains. This downturn on the final market day of August was partially due to Nvidia’s decreasing stock value – the company’s value falling by 0.8% on Thursday and an additional 3% on Friday due to Wall Street’s critical examination of its quarterly earnings. However, despite losing more than 2% in both the week and the month of August, Nvidia’s earnings reports indicate a strong performance for the company.

On the other hand, cybersecurity firm CrowdStrike saw substantial gains following the announcement of its earnings on Wednesday. Despite some pressure on shares due to disappointing revenue guidance, the company’s shares boosted more than 4.5% by the end of Thursday. However, they lost 3.5% in Friday’s decreasing market but still finished the week with a net gain. Even so, the company’s stock recorded losses of over 6% in August after losing almost 11% in July.

Wells Fargo advises investors to rebalance their portfolios due to soaring equity valuations. They recommend reallocating from stocks into select bonds, particularly favoring large-cap stocks and financial stocks that could benefit from potential Federal Reserve rate cuts.

Looking at historical trends, the stock market often experiences turbulence in early fall following a strong summer. For instance, the S&P 500 typically averages a 0.7% decline in September. Furthermore, in years when the index gained more than 2% in both July and August, the average September decline tends to increase to 1%.

Among the notable movers of the day, Petco Health surged 22% after raising its full-year EBITDA guidance, with earnings per share exceeding analysts’ consensus estimates. Celsius gained over 4% after PepsiCo increased its stake in the energy drink company to 11%. Other notables included Alibaba whose shares rose over 13% after the firm created a more advanced chip, and Caterpillar, whose shares lost 4% after warning of a potential $1.5 billion to $1.8 billion hit due to tariffs this year.

The S&P 500 fell from a record high last Friday alongside the Nasdaq and Dow 30-stock as tech led losses. This was due to disappointing earnings reports from Dell and Marvell Technology and Nvidia’s over 3% decline. AI-supported trading, particularly in consumer sentiment data, contributed to the downturn as well.

In acquisitions, DuPont secured a $1.8 billion sale of its Aramids business to Arclin, with the deal anticipated to close in Q1 2026. Funds generated from the deal are expected to drive value creation, possibly through acquisitions in the healthcare and water sectors. Meanwhile, Home Depot secured necessary regulatory approval for its $4.3 billion acquisition of specialty building products distributor GMS Inc., broadening its relationship with professional contractors.

Federal Reserve interest rate cuts bolstered selective stocks, particularly Home Depot, Bristol Myers Squibb, and Capital One, which rose by 11%, 8.5%, and 5% respectively in August as anticipation for rate cuts grew. Home Depot could especially gain if lower borrowing costs stimulate the housing market and result in higher demand for home improvement.

A government decision to cancel $679 million in funding for offshore wind projects has stalled support for renewable energy development, increasing concerns about potential surges in power prices.

Shares in Marvell Technology fell by 18% after underwhelming data center revenue results and subpar forecasts for the current quarter. However, Ambarella stock rose by 16% due to better-than-expected fiscal Q2 results and optimistic guidance.