U.S. Stock Trading Volume No. 1: NVIDIA Falls Nearly 3%, Plans for $100 Billion Investment in OpenAI Stalled
On Monday, NVIDIA, which had the highest trading volume in U.S. stocks, closed down nearly 3%, with a trading volume of $30.173 billion. As doubts about artificial intelligence emerged, Wall Street also turned its attention to NVIDIA.
According to media reports citing informed sources, NVIDIA's plan to invest $100 billion in OpenAI has stalled. With NVIDIA's management expressing skepticism about the deal, negotiations that were originally expected to be &#34;completed within weeks&#34; have not made substantial progress, and cooperation has effectively been shelved.
Reports indicate that there are serious concerns within NVIDIA about OpenAI's business model and long-term competitive landscape. The company's CEO Jensen Huang has privately expressed worries about OpenAI's operational transparency and strategic direction.
Analysts point out that as giants like Microsoft, Google, and Amazon accelerate the development of their own AI chips (such as Microsoft's &#34;Athena&#34; and Google's TPU), NVIDIA realizes the significant risks of over-relying on a single client, especially one like OpenAI that may build its own chips in the future.
Reports suggest that the two parties are renegotiating the cooperation model, which may be downgraded to a smaller-scale equity investment (for example, participating in a new round of several billion dollars in financing for OpenAI), rather than the originally planned $100 billion infrastructure binding.
NVIDIA has repeatedly emphasized that &#34;the initial agreement is not legally binding&#34; and that it &#34;still looks forward to continuing cooperation with OpenAI.&#34; Jensen Huang responded during his visit to Taiwan at the end of January 2026, stating, &#34;NVIDIA is very willing to participate in its financing when OpenAI is ready,&#34; but did not confirm the $100 billion plan.
U.S. Stock Trading Volume No. 2: Tesla Falls Nearly 2%, Musk in Talks to Merge SpaceX and xAI
Tesla, ranked second, closed down nearly 2%, with a trading volume of $23.986 billion. According to informed sources, Musk is in deep negotiations to merge Space Exploration Technologies Corp. (SpaceX) with xAI, highlighting the billionaire's ambitions in artificial intelligence that exceed the capacity of any single entity.
Anonymous sources revealed that Musk's rocket satellite company SpaceX and its AI company have informed some investors about the plan. Some insiders say that the two sides may announce an agreement as early as this week; however, negotiations are still ongoing and may take longer or ultimately break down.
Representatives from SpaceX and xAI did not respond to requests for comment. However, on the social platform X, Musk responded to a post mentioning a Bloomberg report, saying, &#34;Yes.&#34;
xAI completed financing in September with a valuation of $200 billion, while SpaceX had previously pushed for a share sale at a valuation of about $800 billion in December. The core driving force behind the merger (8.990, -0.60, -6.26%) lies in the endless demand for capital in the field of artificial intelligence. xAI's cash burn rate of about $1 billion per month forces Musk to further blur corporate boundaries, integrate capital, and reconsider whether these moonshot projects still need to operate independently
3rd in U.S. Stock Trading Volume: Apple Rises Over 4%, OLED MacBook Pro May Launch with M6 Chip Early
Apple, ranked 3rd, closed up over 4%, with a trading volume of $19.558 billion. Reports indicate that the new MacBook Pro featuring an OLED screen will launch early with the M6 chip, suggesting that Apple's M6 chip will not utilize TSMC's most advanced 2nm N2P process. The report states that Apple will continue to use the N2 process expected for the A20 and A20 Pro chips, compensating for the technological gap with its strong chip design capabilities. The difference between TSMC's N2 and N2P processes is minimal, and the M6 chip is unlikely to upgrade to the new process, which will save wafer costs and ensure capacity supply for future Mac product lines.
According to the latest disclosures, TSMC will begin mass production of the 2nm N2P process in the second half of 2026. Among many clients transitioning to the new generation of lithography technology, only Qualcomm and MediaTek have confirmed the adoption of this upgrade node, likely because their flagship chipsets can achieve higher CPU frequencies through adjustments, thus outperforming the A20 and A20 Pro series. Considering that the performance increase between the N2 and N2P processes is only about 5% at the same power consumption, Apple may focus more on deep optimization of chip architecture.
4th in U.S. Stock Trading Volume: Sandisk Rises Over 15%, Q4 NAND Average Price Expected to Rise Significantly
Sandisk, ranked 4th, closed up over 15%, with a trading volume of $18.026 billion. Reports on Wednesday indicated that the average price of NAND flash memory for Sandisk in Q4 2025 is expected to rise by about 35%.
6th in U.S. Stock Trading Volume: Micron Rises Nearly 6%, HBM Demand Crowding Out Consumer Capacity
Micron, ranked 6th, closed up nearly 6%, with a trading volume of $15.866 billion. Due to the large-scale construction of AI infrastructure, demand for HBM chips from giants like NVIDIA has surged, crowding out consumer memory capacity. The three major DRAM manufacturers, Samsung, SK Hynix, and Micron, are tightening order management to prevent over-ordering or stockpiling, leading to difficulties in memory procurement for consumer electronics such as smartphones and televisions.
8th in U.S. Stock Trading Volume: Google Class A Shares Rise Nearly 2%, Waymo Plans to Raise About $16 Billion
Google Class A shares (GOOGL), ranked 8th, closed up nearly 2%, with a trading volume of $10.8 billion. Sources revealed that Waymo, the autonomous driving subsidiary of Google's parent company Alphabet, is planning to raise about $16 billion in a funding round, which will value the subsidiary at nearly $110 billion after the financing.
These anonymous sources indicated that since the relevant negotiations have not been made public, in this funding round, the parent company Alphabet will inject about $13 billion into this autonomous taxi company, with the remaining funds coming from external investors, including new investors Sequoia Capital, DST Global, and Dragoneer Investment Group
According to informed sources, Waymo's current round of financing is expected to close in February. The company's previous round of financing was completed in October 2024, when its valuation exceeded $45 billion, also led by Alphabet, which owns Google.
12th in U.S. stock trading volume: AMD rises over 4%, graphics card cost price increased in January
AMD, ranked 12th, rose over 4%, with a trading volume of $8.657 billion. According to media reports on Monday, various AMD brand manufacturers raised the shipping cost price of most graphics card models by about 5% to 10% in January this year, leading to some inventory buildup in downstream channels. According to upstream manufacturers, most brand manufacturers may implement a second price increase starting from February to March.
It is reported that the cost prices of various brand graphics card manufacturers have already increased once in January, although the extent was not large, it stimulated downstream channel merchants to stock up. However, the extent of this price increase remains unclear, and it is expected that the cost price will catch up to the cost prices of NVIDIA's comparable models, with the pricing strategy primarily similar to NVIDIA's corresponding models.
13th in U.S. stock trading volume: Oracle falls nearly 3%, issues $25 billion investment-grade bonds
Oracle, ranked 13th, fell nearly 3%, with a trading volume of $7.729 billion. Oracle issued $25 billion in investment-grade bonds on Monday to fund infrastructure construction for its artificial intelligence projects. This is expected to become the largest high-rated bond issuance in the U.S. since Meta Platforms raised $30 billion at the end of last year.
Informed sources revealed that the software giant initially expected the borrowing scale to be between $20 billion and $25 billion and anticipated raising about the same amount through equity sales. Due to not being authorized to speak publicly, the sources requested anonymity.
Funds management institutions believe that the company's decision to adopt a combination of bonds and equity sales is a positive sign, as there are market concerns about the company's debt levels and potential artificial intelligence bubble.
Barclays analysts Andrew Keches and Remy Neuhaus wrote in a report on February 2 that Oracle's plan to utilize a &#34;equity rocket launcher&#34; will significantly reduce its credit downside risk. Moody's confirmed Oracle's debt rating at Baa2, which is the second-lowest level of investment grade.
16th in U.S. stock trading volume: Robinhood falls nearly 10%, may participate in &#34;Trump accounts&#34; custody
Robinhood, ranked 16th, fell nearly 10%, with a trading volume of $5.393 billion. According to informed sources, the U.S. government is considering selecting the fintech company Robinhood Markets to assist in managing its plan to open &#34;Trump accounts&#34; for millions of children.
It is reported that Robinhood has begun internal preparations in case it is selected as the custodian for the project. Meanwhile, the report also noted that some brokerages, including Fidelity Investments and Vanguard Group, have not yet been included in the initial candidate list and have not been consulted
U.S. President Donald Trump launched a government-supported newborn investment account on Wednesday. The U.S. Treasury Department announced that it will deposit $1,000 for all children born between 2025 and 2028, with approximately 25 million families expected to qualify.
Trump urged U.S. companies to contribute to employees' family accounts on Wednesday. The Trump administration estimates that without additional contributions, these accounts will accumulate to $5,800 by the time the newborns turn 18.
It is reported that the U.S. government is expected to announce the list of trustees soon, and the Treasury Department has considered selecting up to three companies to serve as initial trustees.
18th in U.S. stock trading volume: Western Digital rises nearly 8%, revenue surpasses $3 billion
Western Digital, ranked 18th, closed up nearly 8%, with a trading volume of $4.424 billion. Western Digital's revenue for the second fiscal quarter of 2026 surpassed $3 billion, with one of its top five customers signing an agreement until 2028. The company's total shipment capacity last fiscal quarter was 215EB, a year-on-year increase of 22.16% and a quarter-on-quarter increase of 5.39%.
18th in U.S. stock trading volume: Intel falls nearly 5%, but cumulative increase this month still exceeds 20%
Intel, ranked 18th, closed down nearly 5%, with a trading volume of $5.343 billion. The stock has risen 25.9% this month

Apple rose over 4%, OLED MacBook Pro may be equipped with M6 chip ahead of schedule; NVIDIA fell nearly 3%, plans for a $100 billion investment in OpenAI are stalled; Robinhood dropped nearly 10%, as the U.S. government considers selecting the company to participate in the "Trump Account" custody

- NVIDIA's stock fell nearly 3%, with trading volume of $30.173 billion, amidst stalled discussions regarding a $100 billion investment in OpenAI.  
- CEO Jensen Huang expressed skepticism about OpenAI's business model, leading to a potential downgrade of the investment scale.  
- In related market movements, Tesla and AMD also showed notable fluctuations in their stock prices due to various corporate developments.

市场异动追踪

First Trust Nasdaq Food & Semicon

VanEck Semiconductor ETF

NVIDIA

Direxion Daily NVDA Bull 2X Shares

SPDR S&P Semicon

Tesla

iShares Semiconductor ETF

Invesco PHLX Semiconductor ETF

Invesco Semiconductors ETF

T-Rex 2X Long NVIDIA Daily Target ETF

Sandisk

Microsoft

US Stock Fund Activity List | NVIDIA falls nearly 3%, plans for a $100 billion investment in OpenAI are stalled