No. 1 in U.S. stock trading volume$Micron Technology (MU.US)$It closed up 2.97%, with trading volume reaching $23.292 billion.
2nd place$NVIDIA (NVDA.US)$It closed up 1.38%, with trading volume at $21.355 billion.
On Monday, October 19, Eastern Time, NVIDIA announced that its researchers, leveraging the JUPITER supercomputer at Germany's Jülich Supercomputing Centre, conducted a record-breaking fault-tolerant quantum computing simulation. The focus of this research was not only to scale the simulation to a record-breaking 104 qubits, but also to model how a quantum processor performs fault-tolerant computation in real-world noisy environments, enabling researchers to evaluate and optimize designs before building actual hardware.
From October 20 to 22, local time, NVIDIA GTC Berlin 2026 will be held in Berlin, Germany. NVIDIA CEO Jensen Huang will deliver a keynote speech from 17:00 to 19:00 Beijing time on October 21 (11:00–13:00 local time on October 21), sharing his latest outlook on AI technology and industry development.
3rd place$Amazon (AMZN.US)$It closed up 4.98%, with trading volume reaching $14.305 billion.
Morgan Stanley has designated it as a "Top Pick" and raised its price target to $350, arguing that the market severely underestimates AWS's (Amazon Web Services) growth potential and its ability to monetize in the AI era. Morgan Stanley forecasts that AWS will post 47% year-over-year growth by 2027—significantly higher than the market consensus. Although AWS accounts for only about 21% of Amazon's revenue, it generates roughly 60% of the company's operating profit. In the second quarter, AWS reported $42 billion in revenue and $16.6 billion in operating profit, making it the company's true profit engine.
According to media reports on October 19 local time, Amazon is launching a new tool called TorchNeuron that allows developers to run AI code written in PyTorch on Amazon's custom AI chips without rewriting it. PyTorch is an open-source AI programming framework maintained by social media giant Meta and widely used by most AI developers, serving as the "common language" of the AI development field.
Currently, NVIDIA dominates the AI chip market, with a large amount of PyTorch code running on its chips.
4th place$Tesla (TSLA.US)$It closed up 3.76%, with trading volume reaching $14.139 billion.
Wall Street's renowned rating agency, Morningstar, believes that despite its latest estimate of fewer than 2,000 annual deliveries based on official Roadster data, the vehicle can still entice consumers to purchase other Tesla models.
CEO Elon Musk has placed the Optimus humanoid robot and the Cybercab autonomous taxi at the heart of the company's future value; meanwhile, an analyst at Morningstar said that the Roadster, which can "briefly achieve high-altitude flight," may attract buyers to Tesla's broader vehicle lineup.
5th place$Apple (AAPL.US)$It closed down 0.15%, with trading volume at $11.845 billion.
Apple confirmed on Monday that it will hold a product launch event on October 28, where it plans to officially unveil its first touchscreen MacBook.
According to Bloomberg, the event will be held in Los Angeles, with the theme "Pro and tell," echoing the latest updates to the MacBook Pro.
The new touch‑enabled MacBooks are expected to feature an iPhone‑like "Dynamic Island" interaction interface and a sharper OLED display. Both of these additions would be firsts in Mac history.
6th place$SanDisk (SNDK.US)$It closed up 5.53%, with trading volume reaching $11.687 billion.
7th place$Meta Platforms (META.US)$It closed down 0.55%, with trading volume at $11.102 billion.
At a time when AI-driven trading is facing a crisis of confidence,$Meta Platforms (META.US)$The company will release its third-quarter 2026 earnings report after the market closes on October 21, Eastern Time, becoming the first major tech giant to come under scrutiny in this wave of skepticism. For investors, the key to this report lies not in revenue but in expenses: whether the full-year capital‑expenditure guidance remains unchanged and whether AI investments can be shown to be translating into sustainable revenue growth.
8th place$Advanced Micro Devices (AMD.US)$It closed up 1.76%, with trading volume at $10.933 billion.
9th place$SpaceX (SPCX.US)$It closed up 1.32%, with trading volume at $10.93 billion.
SpaceX's third-quarter earnings report has never carried such weight—far beyond that of a mere financial statement. To Wall Street, the results released after Tuesday's market close not only serve as another stress test for Elon Musk's "AI + Space" narrative but may also mark the de facto pricing day for a potential trillion-dollar merger.
What the market really cares about is no longer whether SpaceX is profitable; rather, it's how this deal will be structured, at what price, and which way this earnings report will tilt the odds of a merger.
10th place$Intel (INTC.US)$It closed up 2.43%, with trading volume at $9.441 billion.
JPMorgan upgraded Intel's rating from Underweight to Neutral, citing strong demand for generative AI and tight supply of advanced processes as drivers for earnings revisions; however, its foundry business remains far behind Taiwan Semiconductor, and the transformation will still take several years.
Analyst Harlan Sur stated, "Despite short-term concerns about the sustainability of AI infrastructure spending, we believe that the growing share of agent‑based AI workloads—particularly those CPU‑intensive—and the severe supply constraints on leading‑edge process chips should continue to drive upward revisions to earnings per share throughout the upcoming earnings season and into fiscal year 2027. Our FY2028 EPS forecast is approximately 15% above the market consensus."
13th place$CoreWeave (CRWV.US)$It closed down 0.44%, with trading volume at $6.204 billion.
Recently, CoreWeave, the "new cloud" service provider that has become a barometer of AI trading sentiment, received a bullish rating from Goldman Sachs on Monday.
Analysts, including Gabriela Borges, upgraded CoreWeave's rating from "Neutral" to "Buy." However, Goldman Sachs simultaneously lowered the price target from $139 to $106. Compared with last Friday's closing price of $61.39, the new target still implies about a 73% upside.
Notably, following CoreWeave's "double whammy" of stock and bond sell-offs last week, institutions including Jefferies, Bank of America, Deutsche Bank, and JPMorgan have successively reaffirmed their bullish stance. Among them, JPMorgan believes that the related concerns are overblown, while Deutsche Bank views the recent decline as a buying opportunity.
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Editor/stephen