US Stock Trading Volume No. 1: Nvidia Falls Over 1%, Jensen Huang Shares Insights on Long-Term CEO TenureOn Tuesday, Nvidia, the top stock by trading volume in the US, closed down over 1%, with a trading volume of $26.155 billion. Nvidia's CEO Jensen Huang, the longest-serving CEO in Silicon Valley, was recently asked about how he has maintained his position for over thirty years. The 62-year-old entrepreneur stated at a company event in Las Vegas earlier this month, &#34;The secret to being a CEO for so long comes down to two things: First, don’t get fired; second, don’t get bored.&#34;US Stock Trading Volume No. 2: UnitedHealth Falls Nearly 20%, Warns Revenue Will Decline for the First Time and Will Cut Over 2 Million InsuredUnitedHealth Group, the second in trading volume, closed down nearly 20%, with a trading volume of $18.696 billion. On Tuesday, US healthcare stocks generally declined.UnitedHealth warned that its revenue will decline for the first time in at least thirty years. The American insurance giant is shrinking its business while facing pressure from potential cuts to federal Medicare funding.In its 2026 outlook, UnitedHealth stated that the company plans to reduce the number of people it provides insurance services to by over 2 million and expects its revenue to decline by 2% to $439 billion this year.On Monday, the Centers for Medicare &amp; Medicaid Services (CMS) announced a proposed plan for the 2027 federal Medicare Advantage payment rates. According to this plan, the 2027 Medicare Advantage will see an average net payment growth of only 0.09%. Prior to this, analysts generally expected a payment rate increase of 4% to 6% for 2027.Additionally, UnitedHealth disclosed that the U.S. Department of Justice is conducting a criminal investigation into the company's Medicare billing practices.US Stock Trading Volume No. 3: Tesla Falls 0.99%, Brand Value Declines for Three Consecutive YearsTesla, ranked third, closed down 0.99%, with a trading volume of $16.192 billion. A report from the UK brand valuation firm Brand Finance shows that Tesla's brand value shrank by $15.4 billion in 2025, a decline of about 36%, marking the third consecutive year of decline.Brand Finance CEO David Haigh explained that Tesla's lack of innovative models and relatively high prices for electric vehicle products compared to competitors have weakened its brand value. He also mentioned that Tesla CEO Elon Musk's continuous &#34;overstepping&#34; into geopolitical issues and insufficient focus on the automotive business have further dragged down the brand image.US Stock Trading Volume No. 4: Micron Rises Over 5%, Plans to Build Factory in Singapore and Gets Mizuho to Raise Target PriceMicron, ranked fourth, closed up over 5%, with a trading volume of $14.052 billion. After Micron Technology announced plans to invest $24 billion in building a memory chip manufacturing plant in Singapore, Mizuho raised Micron Technology's target price from $390 to $4807th in US stock trading volume: Amazon rises nearly 3%, closing Amazon Fresh and some Amazon Go stores to transition to Whole Foods MarketAmazon, ranked 7th, closed up nearly 3%, with a trading volume of $9.183 billion. The company will close its Amazon-branded grocery stores and cashier-less convenience stores, ending its two core ventures into physical retail.Amazon stated in a blog post on Tuesday that it will close Amazon Fresh and Amazon Go stores, with some locations being converted to Whole Foods Market.Amazon said, &#34;While we have seen encouraging signs in our Amazon-branded physical grocery stores, we have not yet created a truly differentiated customer experience, nor have we established the right economic model needed for large-scale expansion.&#34;9th in US stock trading volume: Broadcom rises over 2%, with institutions raising target price to $420Broadcom, ranked 9th, closed up over 2%, with a trading volume of $7.838 billion. First Shanghai Securities raised Broadcom's target price to $420, maintaining a buy rating.14th in US stock trading volume: CoreWeave rises nearly 11%, expands cooperation with NVIDIA and receives $2 billion investmentCoreWeave, ranked 14th, closed up nearly 11%, marking the third consecutive trading day of gains, with a trading volume of $5.185 billion. NVIDIA's investment in CoreWeave coincides with a long-term procurement agreement, sending a clear signal: AI is entering a scaling phase, and computing infrastructure has become a battleground.Reports indicate that NVIDIA has increased its bet on cloud service provider CoreWeave. The two parties are expanding their partnership to build AI data centers more quickly. Additionally, NVIDIA will invest $2 billion in CoreWeave at a price of $87.20 per share, subscribing to its common stock. According to FactSet data, as of the end of September, NVIDIA was already a significant shareholder in CoreWeave, holding about 6.6% of its outstanding shares.15th in US stock trading volume: Intel rises over 3%, new Core Ultra 3 multi-core performance tests lead in several categoriesIntel, ranked 15th, closed up over 3%, with a trading volume of $5.079 billion. Benchmark results show that the new Intel Core Ultra 3 series processors, featured in MSI and Lenovo laptops, perform excellently in multi-core performance. Luke Larsen from Wired conducted these tests. He later shared the benchmark results, showing that Intel chips led in two out of three tests compared to Apple's M5 chip.In the Cinebench 24 multi-core benchmark test, the Core Ultra X9 388H achieved the highest score of 1285, while the M5 chip scored only 922. In the 3DMark Steel Nomad Light test, the same Intel chip scored 5883, surpassing the M5 chip's score of 507718th in US stock trading volume: Oracle falls over 4%, target price downgraded by institutionsOracle, ranked 18th, closed down over 4%, with a trading volume of $4.694 billion. Recently, Morgan Stanley lowered Oracle's target price from $320.00 to $213.00

UnitedHealth fell nearly 20%, warning that revenue will decline for the first time and plans to cut more than 2 million insured individuals; CoreWeave rose nearly 11%, expanding cooperation with NVIDIA and receiving a $2 billion investment; Micron rose over 5%, planning to build a memory chip factory in Singapore and receiving a target price increase from Mizuho

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US Stock Fund Activity List | UnitedHealth falls nearly 20%, warns that revenue will decline for the first time and plans to cut more than 2 million insured individuals