Top 20 U.S. Stock Trading Volumes on August 13: Philadelphia Semiconductor Index Rises Over 2%, Storage Sector Generally Up

On Wednesday, Micron ranked first in U.S. stock trading volume, closing up 4.92% with a transaction volume of $33.65 billion.

According to the latest memory and storage market tracking report for the second quarter of 2026 released by Counterpoint Research, Samsung maintained its lead with a 25% shipment share, followed closely by SK Hynix at 22%. Yangtze Memory Technologies Co. (YMTC) jumped to third place with a 14% share, slightly surpassing Kioxia, while Micron Technology ranked fifth.

In the second quarter of 2026, as AI workloads gradually shifted from training to inference, enterprise SSDs accounted for 48% of total bit shipments, leading to a shortage of consumer-grade products. This supply tightness drove industry revenue to a historic high, increasing fivefold compared to the second quarter of 2025.

NVIDIA, ranked third, rose 3.03% with a transaction volume of $24.25 billion. Earlier in the day, Goldman Sachs maintained a "Buy" rating on NVIDIA with a target price of $285.

Reports indicate that NVIDIA is fully committed to developing an open-source model, Nemotron 4, with at least one trillion parameters, aiming to reduce reliance on top clients like OpenAI and cloud giants. NVIDIA's goal is to elevate the performance of the largest version of Nemotron 4 to the level of the world's leading open-source models. Several employees revealed that the model's parameter count is expected to reach at least one trillion—about twice that of its current largest model, Nemotron 3 Ultra.

Analysts pointed out that the news of Nemotron 4's development signifies that NVIDIA is no longer content with being the world's largest AI chip supplier but is now directly competing with top players in the open-source model space.

SpaceX, ranked fourth, closed up 9.65% with a transaction volume of $23.795 billion. The company launched Grok 4.6 during the trading session.

Musk announced at a SpaceX all-hands meeting that AI revenue will "definitely" surpass all other business revenues for SpaceX for the first time in September, setting a goal for AI computing power to reach 10 gigawatts by the end of next year, corresponding to a potential annual revenue of $300 billion to $500 billion. He declared, "We must achieve victory in AI; the future will be about AI and robotics." This is also his clearest timeline and scale forecast for SpaceX's AI business.

SK Hynix-WI ranked sixth.

According to media reports, SK Hynix is expected to announce a new shareholder return plan by the end of August, with the return scale potentially approaching 100 trillion won (approximately $47.6 billion) under certain circumstances.

Meanwhile, Singapore's sovereign wealth fund Temasek plans to make its first direct investment in the South Korean stock market, intending to build a position in SK Hynix, viewing it as a severely undervalued target in the AI value chain.

Intel, ranked seventh, rose 3.32% with a transaction volume of $16.433 billion. UBS lowered Intel's target price from $121 to $112.

Microsoft, ranked tenth, fell 2.26% with a transaction volume of $14.281 billion. S&P Global announced an expansion of its partnership with Microsoft, integrating extensive key intelligence into Microsoft 365 Copilot while incorporating AI-supported data into Microsoft Copilot workflows Apple, ranked 11th, closed down 0.87% with a transaction volume of $12.567 billion. Apple has hired a senior executive from American Airlines to serve as the head of government affairs.

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