Top 20 in US stock trading volume: UnitedHealth Rallies Over 15% in Two Days
Tesla, the top turnover stock on Monday, closed down 2.25%, with a trading volume of $29.636 billion. Analysts noted that Tesla's recent sales performance in several key markets has fallen short of expectations, particularly disappointing sales and registration data in Europe and China. Although trade negotiations with other countries have brought some optimism, these positive signals failed to offset the negative impact on market sentiment caused by the downgrade of the US credit rating.
NVIDIA ranked second, closing up 0.13% with a turnover of $25.76 billion. On Monday, NVIDIA CEO Jensen Huang introduced plans to allow customers to deploy competitor chips in data centers built on NVIDIA's technology, acknowledging the growing in-house semiconductor development by major clients such as Microsoft and Amazon.
Huang announced a new NVLink Fusion system, which enables the construction of more customized AI infrastructure by integrating NVIDIA's high-speed links with semiconductors from other suppliers for the first time.
Historically, NVIDIA has only offered complete computer systems built with its own components. This shift provides data center customers with greater flexibility and allows for some level of competition while maintaining the core 地位 (core position) of NVIDIA's technology. The NVLink Fusion product will enable customers to use their own CPUs alongside NVIDIA's AI chips or pair NVIDIA chips with AI accelerators from other companies.
UnitedHealth Group ranked third, closing up 8.21% with a turnover of $19.045 billion. The stock has risen for two consecutive trading days, with a cumulative increase of over 15% in two days, following an eight-day losing streak. The company has recently been under criminal investigation by US judicial authorities, and public records show that Soros Fund more than doubled its holdings in UnitedHealth during the first quarter.
Apple ranked fifth, closing down 1.17% with a turnover of $9.379 billion.
Palantir ranked sixth, closing down 2.46% with a turnover of $9.064 billion.
Strategy ranked ninth, closing up 3.41% with a turnover of $5.174 billion. It was disclosed that the company increased its Bitcoin holdings by 7,390 coins between May 12 and May 18.
AMD ranked 11th, closing down 2.07% with a turnover of $4.191 billion. AMD announced on Monday that it will sell its US-based data center infrastructure manufacturing business ZT Systems to Sanmina, a company focused on electronics manufacturing services, in a cash-and-stock deal worth $3 billion.
The move aims to allow the chip giant to adopt a lighter asset model with higher operational efficiency, concentrating resources on building and accelerating the delivery of its exclusive high-performance "CPU + GPU + software architecture" full-stack platform for AI developers.
Upon completion, Sanmina will become AMD's preferred new product introduction (NPI) manufacturing partner for rack-level and cluster-level AI solutions in cloud computing. The deal also includes up to $450 million in contingent consideration.
AMD stated it will retain ZT Systems' rack-level AI solution design and customer empowerment expertise to accelerate quality control and deployment timelines for B2B/B2C AI applications among large cloud clients.
JPMorgan Chase ranked 16th, closing down 1% with a turnover of $3.211 billion. Moody's downgraded the deposit ratings of several major banks, including Bank of America and JPMorgan Chase, citing last Friday's downgrade of the US sovereign credit rating and weakened government ability to support these institutions.
Moody's lowered the long-term deposit ratings of Bank of America, JPMorgan Chase, and Wells Fargo affiliates from Aa1 to Aa2 (the third-highest tier). It also downgraded the senior unsecured debt ratings of some Bank of America and BNY Mellon affiliates from Aa1 to Aa2.
Additionally, Moody's downgraded the long-term counterparty risk ratings of certain entities under Bank of America, BNY Mellon, JPMorgan Chase, State Street, and Wells Fargo to Aa2.
CoreWeave ranked 18th, closing up 7.83% with a turnover of $2.745 billion. Reports recently stated that CoreWeave has reached another $4 billion agreement with OpenAI lasting until 2029 to provide additional cloud computing capabilities. Furthermore, as of the end of March 2025, NVIDIA held nearly $900 million worth of CoreWeave shares, representing a 7% stake.
In an interview, CEO Michael Intrator said, "The demand for our products is truly insatiable. To meet this demand, CoreWeave is accelerating its investment plans, with total spending reaching $23 billion this year."