Stock Market Summary – August 15, 2025

The S&P 500 experienced mild pressure but managed to end the week with a gain of over 1%. The Dow performed better, mainly due to UnitedHealth’s best day in five years following a revelation by Warren Buffet’s Berkshire Hathaway about a significant stake in the company. Investors such as Michael Burry and David Tepper also disclosed substantial stakes in UnitedHealth. This provided a significant boost to healthcare stocks, positioning them as the week’s top performers.

Conversely, technology, consumer staples, and utilities suffered losses. Tech stocks underperformed due to slow momentum, and grocery-related stocks like Kroger, Walmart, and Target saw a decline following Amazon’s announcement of a significant expansion to its same-day delivery grocery service.

Eli Lily was a standout in the healthcare sector, bouncing back after a disappointing week preceded by unfavorable data from its oral GLP-1 trial. However, insiders buying activity led to a positive sentiment toward the company. UnitedHealth Group was another big winner, given a boost by Berkshire Hathaway’s purchase.

Cisco Systems saw a downgrade from a buy to a hold by HSBC analysts, with a price target of $69 per share after its recent earnings release. The same analysts highlighted that Cisco’s security business underperformed expectations.

DraftKings, an online sports betting company, is expected to witness a stock rebound. Despite suffering from the tariff-related stock market sell-off, analysts predict that the company’s shares could potentially rise by 17% from current levels.

Finally, Opendoor shares surged by about 10% following the resignation of CEO Carrie Wheeler under investor pressure. The stock has risen over sixfold since hitting its lowest point in June. Opendoor’s business model is based on technological solutions for buying and selling homes, which has sparked considerable interest from retail investors.

The Dow, S&P, and Nasdaq saw significant moves thanks to a number of companies altering their performance. UnitedHealth had its best day since 2008 after Berkshire Hathaway revealed a stake in the company, with the healthcare insurer rising 14%. Semiconductor equipment manufacturer Applied Materials saw the opposite fortune, falling 13% due to a disappointing current-quarter outlook.

Sandisk, the data storage provider, also experienced a loss of nearly 11% after revealing their fourth-quarter non-GAAP gross margin had reduced from the year prior. On a brighter note, tech firms Intel and Twilio saw their stock rise by more than 3% and 5% respectively. Intel’s increase comes on the back of rumored talks between the Trump administration and the chipmaking firm regarding a possible stake in the company. Twilio is set to join the S&P MidCap 400 index following the removal of Amedisys.

Tech analyst Gil Luria stressed that a government intervention in Intel is “essential” for national security reasons, following a report that the Trump administration is considering taking a stake in the company. The news boosted Intel’s shares, with the stock rising more than 6%.

UnitedHealth, a private health insurer, saw a huge surge by over 14%, marking its best day since 2008. This came after Warren Buffett’s Berkshire Hathaway revealed a new stake in the company. However, UnitedHealth has been facing an investigation into its Medicare billing practices by the Justice Department.

Bank of America strategist Michael Hartnett noted that the S &P 500 is currently trading at 5.3 times its price-to-book value, which is higher than in March 2000 when the dot-com bubble peaked. The stock market’s high valuation is attributed to investors flocking to AI-related stocks and soaring expectations surrounding Federal Reserve rate cuts thanks to recent inflation data.

Some of the major analyst given calls are Morgan Stanley firm reiterated both Apple and Nvidia as overweight, while HSBC downgraded Cisco to hold from buy. JPMorgan reiterates Applied Materials as overweight despite its decreased earning. With respect to retailer stocks, Raymond James has upgraded Wingstop to strong buy from outperform whilst Bank of America has downgraded Target to underperform due to longer-term sales and margin risks.