Tesla topped Tuesday's US stock trading volume rankings with a 2.82% gain and $42.279 billion in trading volume. According to Tesla's filing with the Securities and Exchange Commission on September 15, CEO Elon Musk purchased over 2.5 million Tesla shares on September 12, with a total value of approximately $1 billion.

Previously, Tesla's board proposed a new compensation package to Musk with potential value approaching $1 trillion. Under the agreement, Tesla's board granted Musk up to 423.7 million restricted shares, representing about 12% of the company's adjusted total share capital, to be distributed in 12 batches. One of the operational targets for unlocking the trillion-dollar compensation package requires cumulative delivery of 1 million humanoid robots.

Nvidia ranked second with a 1.64% decline and $23.963 billion in trading volume. On September 15, 2025, China's State Administration for Market Regulation announced that preliminary investigations found Nvidia violated China's Anti-Monopoly Law and related regulatory decisions regarding its acquisition of Mellanox Technologies, and decided to conduct further investigations.

Oracle ranked third with a 1.49% gain and $15.797 billion in trading volume. On the evening of September 15, Li Chenggang, China's International Trade Representative and Vice Minister of Commerce, stated that China and the US reached a basic framework consensus on the TikTok issue. Currently, teams from both sides will maintain close communication to negotiate details of relevant outcome documents and complete their respective domestic approval procedures.

Reports indicate Oracle is participating in a consortium attempting to maintain TikTok's US operations under a possible framework agreement between China and the US. According to sources cited in the reports, the specific transaction structure remains unclear in this latest development, but may include a joint consortium of multiple companies, with ByteDance's future participation also uncertain.

Apple ranked fourth with a 0.62% gain and $15.101 billion in trading volume. Goldman Sachs tracking data from Apple.com pre-orders shows that globally, all iPhone 17 models have longer delivery times than previous generation products, with the standard and Pro Max models showing the greatest increases, with delivery times extended by 8 days respectively. The Chinese mainland market performed particularly well, with delivery times increasing by an average of 17 days to a 27-day waiting period. Goldman Sachs indicated that strong pre-order demand signals support their expectation for 8% iPhone revenue growth in Apple's fourth fiscal quarter.

Microsoft ranked fifth with a 1.23% decline and $10.005 billion in trading volume. Microsoft announced investments in the UK including $15 billion for cloud and artificial intelligence infrastructure construction, planning to build the UK's largest supercomputer.

Meta Platforms ranked sixth with a 1.87% gain and $9.045 billion in trading volume. The company will increase investment in AI-driven augmented reality products at its annual Connect conference on Wednesday, launching new smart glasses. Zuckerberg is expected to announce the company's first consumer-facing smart glasses with built-in displays. Analysts predict the device will retail for approximately $800.

Amazon ranked seventh with a 1.13% gain and $8.924 billion in trading volume. The company has designated October 7-8 as "Prime Big Deal Days" promotional event days, kicking off the holiday shopping season. The e-commerce giant stated that Prime members will be able to purchase discounted products across various categories. The company also indicated there will be more exclusive promotional activities than in the past.

AppLovin ranked twelfth with a 1.8% gain and $5.057 billion in trading volume. The stock has now risen for seven consecutive trading days, with cumulative gains exceeding 23%.

UnitedHealth ranked fourteenth with a 2.33% decline and $4.307 billion in trading volume. On September 16 local time, Luigi Mangione, the suspect accused of shooting UnitedHealth Group executive Brian Thompson, appeared in a New York State court. The judge dismissed two criminal charges against Luigi Mangione in New York State that day, while the second-degree murder charge remains.

Alibaba ranked sixteenth with a 2.64% gain and $4.157 billion in trading volume. According to reports, Alibaba founder Jack Ma has made a "strong return," boldly betting on and promoting artificial intelligence (AI) development. Reports also mentioned that Alibaba's internal message board displays the dream of "MAGA (Make Alibaba Great Again)" - making Alibaba great again, with Jack Ma leading this mission.

BMNR ranked twentieth with a 5.31% gain and $2.799 billion in trading volume. Tuesday saw broad gains in US cryptocurrency sector stocks. Robinhood Securities rose 2.22%.