Sandisk Shares Surge 26% as Microsoft Earnings Revive AI Memory Trade

Key Takeaways

• Sandisk shares closed 25.99% higher at $1,279.96, with after-hours trading pushing gains to nearly 34%.
• Microsoft's strong cloud earnings boosted confidence in AI infrastructure demand, benefiting Micron and AMD.
• Upcoming earnings and Investor Day for Sandisk may provide insights on NAND pricing and enterprise SSD demand.

Sandisk Shares Lead the Semiconductor Rebound

On July 30, Sandisk shares experienced a significant surge, closing at $1,279.96, marking a 25.99% increase and positioning the stock among the top performers in the S&P 500. The momentum continued in after-hours trading, with shares reaching approximately $1,359, reflecting an additional gain of 6.18% and nearly 34% above the previous day's close of $1,015.89. This rebound followed a period of decline in AI, semiconductor, and memory-related stocks, although Sandisk remains about 46% below its June peak, indicating ongoing volatility.

Microsoft Earnings Restore Confidence in AI Spending

Microsoft's fiscal fourth-quarter results were pivotal in driving the technology sector's recovery. The company reported a quarterly revenue of $90 billion, an 18% year-over-year increase, with cloud revenue rising 27% to $59.3 billion. Azure and other cloud services saw a remarkable 43% growth. This performance underscored the impact of substantial investments in AI and data-center infrastructure, leading to a 15.5% jump in Microsoft shares, its best day in nearly 18 years. This resurgence restored confidence in suppliers of processors, memory products, and storage systems essential for AI infrastructure, benefiting companies like Micron Technology and Advanced Micro Devices.

Hedge Fund Transaction May Have Reduced Selling Pressure

The rebound in Sandisk shares coincided with reports that Citadel acquired a significant portion of the stock portfolio from Situational Awareness, an AI-focused investment fund that had suffered losses due to leveraged positions in AI-related companies. This acquisition was seen as reducing the risk of further forced selling, although it does not alter Sandisk's underlying operational performance. The sustainability of the share-price recovery will depend on factors such as NAND demand, pricing, margins, and management's outlook.

CXMT IPO Adds to Memory-Sector Uncertainty

Sandisk's earlier decline was also influenced by concerns regarding the IPO of Chinese memory-chip producer ChangXin Memory Technologies (CXMT), which saw its shares rise 466% on debut. This listing highlighted China's ambitions in semiconductor manufacturing and contributed to selling pressure across global memory stocks. While CXMT primarily produces DRAM, which serves as temporary memory, Sandisk focuses on NAND flash for persistent data storage. Nonetheless, the IPO raised concerns about future Chinese semiconductor capacity and competitive pressures in the memory industry.

Sandisk Earnings and Investor Day Move Into Focus

Looking ahead, investors are focused on Sandisk's upcoming fiscal fourth-quarter and full-year results, set for August 5, followed by an Investor Day on August 13. Key areas of interest include:

• NAND flash pricing and supply conditions
• Enterprise SSD demand from cloud and AI customers
• Gross-margin sustainability
• Production and capacity plans
• Long-term customer supply agreements
• Fiscal 2027 revenue and earnings outlook

These results will be crucial in determining whether Sandisk's recent decline was an overreaction or a sign of a more durable reassessment of AI-related memory demand. While the recent rebound has improved short-term sentiment, the stock's volatility suggests that uncertainty remains high.