NVIDIA, the top stock by trading volume on Tuesday, closed down 1.1%, with a turnover of $26.155 billion. NVIDIA CEO Jensen Huang, the longest-tenured CEO in Silicon Valley, was recently asked how he has remained in the position for over three decades. The 62-year-old entrepreneur stated at a company event in Las Vegas earlier this month, "The secret to being a CEO for so long is two-fold: first, don't get fired; second, don't get bored."

UnitedHealth Group was the second-most traded stock, closing down 19.61% with a turnover of $18.696 billion. Healthcare stocks across the U.S. market were generally lower on Tuesday.

UnitedHealth warned that its revenue is set to decline for the first time in at least thirty years. The U.S. insurance giant is scaling back its operations while facing pressure from potential cuts to Medicare funding.

In its 2026 outlook, UnitedHealth stated it plans to reduce the number of people it provides insurance services to by more than two million and expects this year's revenue to fall by 2% to $439 billion.

On Monday, the U.S. Centers for Medicare & Medicaid Services (CMS) released a proposed plan for the 2027 Medicare Advantage payment rates. According to the proposal, the Medicare Advantage program will see an average net payment increase of just 0.09% in 2027. Prior to this, analysts had widely anticipated a payment rate increase of 4% to 6% for 2027.

Additionally, UnitedHealth disclosed that the U.S. Department of Justice has launched a criminal investigation into the company's Medicare billing practices.

Tesla, the third-most traded stock, closed down 0.99% with a turnover of $16.192 billion. A report from brand valuation firm Brand Finance showed that Tesla's brand value shrank by $15.4 billion in 2025, a decline of approximately 36%, marking the third consecutive year of decline.

Brand Finance CEO David Haigh explained that Tesla's lack of innovative models and its relatively high-priced electric vehicles compared to competitors have weakened its brand value. He also mentioned that Tesla CEO Elon Musk's repeated "overstepping" into geopolitical issues and his perceived lack of focus on the automotive business have further damaged the brand's image.

Micron Technology, the fourth-most traded stock, closed up 5.44% with a turnover of $14.052 billion. After Micron announced plans to invest $24 billion in building a new memory chip manufacturing plant in Singapore, Mizuho raised its price target on Micron from $390 to $480.

Amazon, the seventh-most traded stock, closed up 2.63% with a turnover of $9.183 billion. The company will shut down its Amazon-branded grocery stores and cashier-less convenience stores, ending two core components of its push into physical retail.

In a blog post on Tuesday, Amazon stated it will close Amazon Fresh and Amazon Go stores, with some locations being converted into Whole Foods Market stores.

Amazon said, "While we saw encouraging signs in our Amazon-branded physical grocery stores, we have not yet created a truly differentiated customer experience, nor have we developed the right economic model for large-scale expansion."

Broadcom, the ninth-most traded stock, closed up 2.44% with a turnover of $7.838 billion. First Shanghai Securities raised its price target on Broadcom to $420, maintaining a Buy rating.

CoreWeave, the 14th-most traded stock, closed up 10.73%, marking its third consecutive day of gains, with a turnover of $5.185 billion. NVIDIA's investment in CoreWeave, coupled with a long-term procurement agreement, sends a clear signal: AI has entered a scaling phase, and computing infrastructure has become a critical battleground.

It was reported that NVIDIA is increasing its bet on cloud service provider CoreWeave. The two companies are expanding their partnership to build AI data centers more rapidly. Furthermore, NVIDIA will invest $2 billion in CoreWeave at a price of $87.20 per share to subscribe to its common stock. According to FactSet data, as of the end of September, NVIDIA was already a significant shareholder in CoreWeave, holding approximately 6.6% of its outstanding shares.

Intel, the 15th-most traded stock, closed up 3.39% with a turnover of $5.079 billion. Benchmark test results showed that the new Intel Core Ultra 3 series processors, featured in MSI and Lenovo laptops, delivered outstanding multi-core performance.

Luke Larsen from *Wired* magazine conducted these tests. He subsequently shared the benchmark results, which showed the Intel chip leading the Apple M5 chip in two out of three tests.

In the Cinebench 24 multi-core benchmark test, the Core Ultra X9 388H achieved the highest score of 1285 points, while the M5 chip scored only 922 points. In the 3DMark Steel Nomad Light test, the same Intel chip scored 5883 points, surpassing the M5 chip's score of 5077 points.

Oracle, the 18th-most traded stock, closed down 4.13% with a turnover of $4.694 billion. Recently, Morgan Stanley lowered its price target on Oracle from $320.00 to $213.00.