On April 19, the top 20 U.S. stocks in terms of trading volume: the chip sector fell, and Nvidia fell 10%

Nvidia, the No. 1 U.S. stock market in terms of trading volume, closed down 10% on Friday, with a turnover of $69.107 billion. After TSMC lowered its growth forecast for the chip market, global semiconductor stocks retreated, and investors rushed to lock in profits.

TSMC on Thursday lowered its growth forecast for the global logic semiconductor industry this year from more than 10% to around 10%. The change has heightened concerns about a recovery in demand for chips used in electric vehicles, computers and smartphones.

Kazuyoshi Saito, senior analyst at IwaiCosmo Securities, said: "Chip stocks have been in the spotlight due to the development of artificial intelligence, so the slightest concern about their prospects can trigger a massive sell-off. "

The second place, Supermicrocomputer, closed down 23.14%, with a turnover of $13.291 billion. Supermicro did not announce its earnings forecast, and some studies reported that its stock price was overvalued.

On Friday, an industry research report screened stocks in the S&P 500 with the largest valuation premiums, i.e., stocks with higher current dynamic P/E than their average over the past five years, based on FactSet data.

According to the results of this screening, stocks such as Supermicro Computer and Broadcom are considered to be overvalued, meaning that their current prices do not match their price-to-earnings ratios.

No. 3 Tesla closed down 1.92%, with a turnover of $12.786 billion. Tesla announced on Friday (April 19, 2024) that it will recall 3,878 CyberTruck pickup trucks to repair or replace the accelerator pedal. The reason is that these accelerator pedals can shift and cause the vehicle to accelerate inadvertently, increasing the risk of crashes.

According to the recall report filed with the National Highway Traffic Safety Administration (NHTSA), Tesla received two customer reports related to the issue. According to Tesla, when the driver presses the accelerator pedal strongly, the CyberTruck's accelerator pedal may shift and become stuck in the interior trim.

The recall also provides the first glimpse into how many Cybertruck electric pickup trucks the company has sold since last November.

No. 4 Meta Platforms closed down 4.13%, with a turnover of $12.193 billion. Meta Platforms unveiled Llama 3, the latest addition to its family of open-source large language models, Llama 3, on Thursday. A total of two open-source Llama 3 8B and Llama 3 70B models have been released for free use by external developers. Both versions of Llama 3 will also be available on major cloud providers soon.

No. 5 Microsoft closed down 1.27%, with a turnover of $11.682 billion. Microsoft will release its earnings report on April 25. BofA raised its revenue forecast by 1 percent, mainly due to the strong performance of Azure and Microsoft 365. The bank maintained its price target of $480 on Microsoft.

No. 6 Apple closed down 1.22%, with a turnover of $11.142 billion. Apple's proposal to open up its "tap-and-go" mobile payment system to competitors will be approved by the European Union's antitrust regulator as early as next month, after tweaking some terms, people familiar with the matter said.

Apple wants to reach a settlement over a four-year-long investigation that will help it avoid being found guilty of possible misconduct and avoid hefty fines that could be up to 10% of its annual global turnover. The European Commission aims to accept Apple's offer by this summer, with the most likely month being May, but the timing could still change as the European Commission waits for Apple to finalize the final technical details, people familiar with the matter said.

No. 7 AMD closed down 5.44%, with a turnover of $10.535 billion. AMD recently released the Ryzen PRO series of commercial processor products based on the new Zen 4 architecture + RDNA 3 architecture + XDNA architecture, and the latest news is that the Ryzen PRO 8040 series for laptops and the Ryzen PRO 8000 series chips for desktops are all produced by TSMC and are expected to be available in the second half of this year.

No. 8 Amazon closed down 2.56%, with a turnover of $9.506 billion. US tech and retail giant Amazon may soon be asked to formally recognise the union, which is based in Coventry, UK, after a government agency ruled in favor of the GMB union, according to reports.

No. 9 Netflix closed down 9.09%, with a turnover of $9.224 billion. Netflix's first-quarter revenue was $9.370 billion, up 14.8% year-over-year, net income was $2.332 billion, up 79% year-over-year, and diluted earnings per share were $5.28, up significantly from $2.88 in the year-ago quarter.

Netflix's first-quarter revenue and earnings per share beat Wall Street analysts' expectations, as did its outlook for fiscal second-quarter 2024 revenue and earnings per share, but its full-year fiscal 2024 revenue outlook missed some analysts' expectations.

No. 11 Broadcom closed down 4.31%, with a turnover of $5.427 billion. On Friday, some analysts said its stock price was overvalued.

No. 12 Google Class A shares (GOOGL) closed down 1.23%, with a turnover of $4.972 billion. Google CEO Sundar Pichai announced the full integration of Google's AI workforce structure, saying the move will help the tech giant develop AI products and services more quickly and efficiently.

In a blog post and a notice to employees on Thursday, Pichai said that the AI team at Google Research, which focuses on large AI models and related areas responsible for ensuring the security of AI technology, will be fully integrated into the company's flagship AI business unit, DeepMind.

The DeepMind team has developed Google's state-of-the-art AI model, Gemini, which was unveiled late last year and can process different forms of information such as video, audio, and text. Pichai said last year that the company plans to release a series of AI models in 2024.

TSMC, the 14th, closed down 3.46%, with a turnover of $3.599 billion. After TSMC lowered its growth forecast for the chip market, the U.S. chip sector was generally lower on Friday.

The world's largest advanced chipmaker lowered its forecast for semiconductor market growth (excluding memory chips) to around 10% in 2024. CEO Wei Zhejia also lowered his growth forecast for TSMC's leading foundry. At the same time, the company has maintained its spending estimate for capacity expansion and upgrades this year at between $28 billion and $32 billion.

No. 17 Arm Holdings closed down 16.90%, with a turnover of $2.733 billion. Arm CEO Rene Haas said on Friday that the huge demand for computing power in AI is threatening the supply of energy, requiring the industry to change its approach to technology. By 2030, Haas says global data centers will use more electricity than India, the world's most populous country.