U.S. Stocks Mixed; Nasdaq and S&P Reach Intraday Highs — Market Brief for Investors

U.S. stocks mixed; Nasdaq and S&P reach intraday highs

Market snapshot — quick take

The three major U.S. indexes moved in a narrow range during Tuesday Eastern trading.

The Nasdaq Composite and the S&P 500 both recorded intraday highs on the session.

The Dow Jones Industrial Average (DJIA) was down 0.19%.

The Nasdaq Composite was up 0.04%.

The S&P 500 was down 0.10%.

Advanced Micro Devices (AMD) continued a strong rally, rising more than 5% intraday.

Why this matters — quick investor insights

• Narrow breadth: Nasdaq and S&P hitting intraday highs while the DJIA lags suggests gains were concentrated in growth and tech names.

• AMD surge: A >5% move in AMD is noteworthy for semiconductor and AI hardware watchers, and it can drive sentiment in related ETFs and chip suppliers.

• Risk indicator: Markets moving in a tight range while gold surges (see below) is often a sign of selective risk appetite and hedging behavior among institutional investors.

Global headlines that moved markets

Gold futures top $4,000/oz for the first time; spot gold near record highs

On October 7, New York gold futures briefly hit $4,000 per troy ounce for the first time ever.

That price point represents a year-to-date gain of more than 50%.

Spot gold traded around $3,976.94/oz, also a record high.

Price conversions (approximate at 1 USD = ¥7.25): $4,000/oz ≈ ¥29,000 RMB per ounce.

Spot conversion: $3,976.94/oz ≈ ¥28,839.77 RMB per ounce.

What to watch: a gold price at this level can pressure real-yield sensitive assets and often signals demand for inflation or geopolitical hedges.

U.S. president announces 25% tariffs on imported medium- and heavy-duty trucks

On October 6, U.S. President Donald Trump (Tèlǎngpǔ 特朗普) announced a 25% tariff on imports of medium- and heavy-duty trucks, effective November 1, 2025.

This follows a prior announcement imposing similar tariffs on heavy trucks starting October 1.

Why investors care: tariffs of this size can affect supply chains, margins for OEMs, and the competitive landscape for truck imports and domestic manufacturing.

France and Italy sign MoU to explore lunar fission reactor designs

Framatome (Fǎmǎtōng 法马通公司) signed an MoU with Italy’s ENEA (Yìdàlì Xīn Jìshù, Néngyuán hé Kěchíxù Fāzhǎn Shǔ 意大利新技术、能源和可持续发展署).

The partnership will study advanced nuclear fission reactor concepts for the Moon’s extreme environment.

Takeaway: governments and incumbents are moving quickly to pair space programs with advanced energy tech, which could seed new industrial and supply-chain opportunities for energy and aerospace suppliers.

WTO: Asia drove most AI-related trade growth in H1 2025

Marc Bacchetta, acting director of Economic Research and Statistics at the World Trade Organization (WTO, Shìjiè Màoyì Zǔzhī 世界贸易组织), said AI-related goods were a major driver of trade growth in H1 2025.

Trade in AI-related products rose about 20% year-over-year.

Although AI-related goods represent under 10% of global merchandise trade by value, they accounted for nearly half of the year-over-year increase.

Investor insight: this highlights how concentrated AI technology demand can be in trade growth metrics and why Asia’s manufacturing and export ecosystems are central to AI hardware flows.

U.S. invests in Trilogy Metals; stock soars

The White House announced a cooperation agreement with Trilogy Metals that includes an equity investment of USD 35.6 million, representing a 10% stake.

Conversion (approximate at 1 USD = ¥7.25): USD 35,600,000 ≈ ¥258,100,000 RMB.

Why it matters: federal investment signals strategic prioritization of critical energy and mining projects in Alaska and can accelerate permitting, infrastructure, and offtake discussions.

Nobel Prize in Physics honors macroscopic quantum effects

The 2025 Nobel Prize in Physics was awarded to three U.S.-based scientists for contributions to quantum mechanics in circuits.

Winners include Michel Devoret (Mǐxiē’ěr Déwòléitè 米歇尔·德沃雷特), John Clarke (约翰·克拉克), and John Martinis (约翰·马丁尼斯).

Their work helped reveal macroscopic quantum tunneling and energy quantization in circuits.

Relevance: this underscores the academic and applied progress feeding the quantum computing and superconducting-circuit ecosystems that investors and founders watch closely.

WHO calls for tighter regulation of e-cigarettes

The World Health Organization (WHO, Shìjiè Wèishēng Zǔzhī 世界卫生组织) released a global tobacco trends report highlighting persistent tobacco-related harm.

WHO warned that e-cigarettes are driving a new wave of nicotine addiction and urged stricter regulation globally.

Market context: this can shape regulation risk for consumer health startups, nicotine product manufacturers, and adjacent marketing channels.

China’s foreign-exchange reserves top $3.3 trillion for two months running

China’s State Administration of Foreign Exchange reported that as of the end of September 2025, foreign-exchange reserves stood at USD 3,338.7 billion (33,387 亿美元).

Conversion (approximate at 1 USD = ¥7.25): USD 3.3387 trillion ≈ ¥24.212 trillion RMB.

Macro takeaway: sustained reserves at this level can influence currency stability efforts and policy flexibility for Beijing.

Actionable watchlist for investors, founders, and techies

• Track AMD for momentum and any news on inventory, AI data-center demand, or guidance that could extend the rally.

• Monitor gold flows and real yields for signs of whether the $4,000/oz level becomes a new psychological floor or a short-term spike.

• Assess tariff impacts on industrial and auto-supply chains if medium- and heavy-duty truck tariffs are implemented.

• Watch AI-related trade dynamics given WTO data showing disproportionate trade growth driven by AI goods.

• Follow Trilogy Metals for developments tied to federal cooperation and how that affects project timelines in Alaska.

Notes on names and sources

This summary was compiled from Dongfang Caifu Choice Data (Dōngfāng Cáifù Choice Shùjù 东方财富 Choice 数据) reporting and linked items.

Organization names referenced in the report include:

• Dongfang Caifu (Dōngfāng Cáifù 东方财富)

• World Trade Organization (WTO, Shìjiè Màoyì Zǔzhī 世界贸易组织)

• World Health Organization (WHO, Shìjiè Wèishēng Zǔzhī 世界卫生组织)

• Framatome (Fǎmǎtōng 法马通公司)

• ENEA (Yìdàlì Xīn Jìshù, Néngyuán hé Kěchíxù Fāzhǎn Shǔ 意大利新技术、能源和可持续发展署)

• Trilogy Metals

• Advanced Micro Devices (AMD)

References

• 美股三大指数震荡整理 纳指与标普创盘中新高 AMD涨超5% – 东方财富 Choice 数据
• 纽约期金首次触及4000美元/盎司整数大关 年内大涨逾50% – 东方财富
• 芯片大利好！AMD史诗级暴涨！ – 东方财富

U.S. stocks mixed; Nasdaq and S&P reach intraday highs