U.S. Stock Night Market MovementsSandisk rose 19.10% in the night market. Based on recent key news:<ol><li>On January 29, Sandisk announced its second-quarter financial report, with revenue of $3.03 billion, a year-on-year increase of 31%, and earnings per share of $6.20, far exceeding market expectations, driving the stock price up over 15% in after-hours trading. Data center revenue grew by 64%, primarily driven by demand for AI infrastructure construction. Source: Zhitong Finance</li><li>On January 30, Sandisk projected third-quarter revenue to reach $4.4 billion to $4.8 billion, with adjusted earnings per share of $12 to $14, significantly higher than market expectations, indicating strong business expansion momentum. Source: MarketWatch</li><li>On January 27, analysts generally maintained a &#34;buy&#34; rating, believing that Sandisk holds a core position in storage solutions in the AI era, driving the stock price up. Source: Jefferies Financial Group AI demand drives growth in the storage industry.</li></ol>Stocks with High Trading Volume in the IndustryApple rose 0.31% in the night market. Based on recent key news:<ol><li>On January 29, Apple's stock price came under pressure due to rising storage chip prices potentially affecting profitability. Since December, Apple's stock price has fallen over 10%, becoming the largest drag on the S&amp;P 500 index. Investors are concerned that rising chip costs will squeeze profit margins. Source: Jinshi Data</li><li>On January 30, Apple announced its financial report, with net profit in the first fiscal quarter rising 16% to $42.1 billion, and earnings per share of $2.84, exceeding expectations. Strong iPhone sales drove the stock price up 1% in after-hours trading. Source: Economic Information Agency</li><li>On January 30, Apple announced the acquisition of Israeli AI company Q.ai for $1.6 billion, aimed at enhancing device voice recognition capabilities. This move is seen as an important layout for Apple in the AI field. Source: Economic Information Agency The overall industry performance is strong, with attention to chip cost risks.</li></ol>Western Digital fell 2.69% in the night market. Based on recent key news:<ol><li>On January 29, Western Digital announced its second fiscal quarter financial report, with revenue reaching $3.02 billion, a year-on-year increase of 25%, exceeding analyst expectations. Despite strong performance, the stock price fell in after-hours trading, possibly due to market caution regarding future growth. Source: DoNews</li><li>On January 29, Western Digital projected third fiscal quarter revenue to reach $3.1 billion to $3.3 billion, with adjusted earnings per share of $2.15 to $2.45, all above analyst expectations. However, the market expressed concerns about increased capital expenditures, putting pressure on the stock price. Source: Zhitong Finance</li><li>On January 29, the overall industry is experiencing high prosperity, with Western Digital's stock price having risen over 470% in the past 12 months, but recent stock price fluctuations may reflect investors' doubts about the sustainability of AI-driven hard disk demandSource: Wall Street Watch AI demand drives recovery in the hard disk industry.</li></ol>Seagate Technology rose 3.67% in after-hours trading. Based on recent key news:<ol><li>On January 28, Seagate Technology announced quarterly results that exceeded expectations, leading to a significant increase in stock price. The company's revenue for the second fiscal quarter was $2.83 billion, a year-on-year increase of 21.5%, with adjusted earnings per share of $3.11, both surpassing market expectations. Looking ahead to the third fiscal quarter, Seagate expects a revenue midpoint of $2.9 billion and adjusted earnings per share of $3.4, significantly higher than analyst forecasts. This performance reflects strong demand from data centers, driving up the stock price. [Source: Zhitong Finance]</li><li>On January 28, Seagate Technology's HAMR technology received certification from U.S. customers, enhancing market confidence. HAMR technology represents the next-generation breakthrough in hard disk storage, capable of storing more data in the same physical space to meet the needs of AI data centers. This technological advancement alleviated market concerns about the company's execution capabilities, further driving up the stock price. [Source: Zhitong Finance]</li><li>On January 28, analysts raised Seagate's target price, reflecting optimistic market expectations. Multiple institutions, including Wedbush, Evercore ISI, and Morgan Stanley, raised Seagate's target price, believing the company is positioned for long-term structural growth driven by AI, with a product mix leaning towards high-capacity hard drives enhancing pricing power, thus pushing up the stock price. [Source: Zhitong Finance] AI demand drives growth in the storage industry, but risks need to be monitored</li></ol>

SNDK

Sandisk rose 19.10% in after-hours trading; Apple rose 0.31% in after-hours trading, with a transaction volume of USD 3.74 million; Western Digital fell 2.69% in after-hours trading, with a transaction volume of USD 3.43 million; Seagate Technology rose 3.67% in after-hours trading, with a transaction volume of USD 1.45 million

- Sandisk's shares surged 19.10% after reporting a Q2 revenue of $3.03 billion, up 31% year-on-year, driven by 64% growth in data center revenue due to AI infrastructure demands.  
- Apple's stock increased 0.31% amid concerns about rising storage chip prices affecting profits, despite a 16% increase in Q1 net profit and strong iPhone sales.  
- Western Digital's shares fell 2.69% despite exceeding revenue expectations, as market concerns about increased capital expenditures and sustainable AI-driven demand lingered.

Tracking Unusual Activity

Sandisk

U.S. stock night trading anomaly: Sandisk's earnings report exceeded expectations, with AI demand boosting the stock price up 19.10% in after-hours trading!