Sandisk Corporation (SNDK) experienced a remarkable surge on Friday, with shares climbing approximately 16.5% to close at $1,562.34. This rally propelled the flash-memory company's market capitalization to roughly $245 billion, reflecting robust investor enthusiasm driven by escalating demand for AI-related storage solutions.
The broader market also benefited from the AI boom, as the S&P 500 and Nasdaq Composite indices reached new record highs. Micron Technology (MU) joined Sandisk in posting gains of over 15%, underscoring the strength of the semiconductor sector. The Philadelphia SE Semiconductor Index extended its strong second-quarter run, further signaling investor confidence in chipmakers.
Exceptional Quarterly Performance
Sandisk reported fiscal third-quarter revenue of $5.95 billion, a staggering 97% increase from the previous quarter. GAAP net income came in at $3.62 billion, or $23.03 per diluted share. The company's datacenter revenue surged 233% quarter-over-quarter to $1.47 billion, highlighting the critical role of NAND flash memory in AI workloads.
Looking ahead, Sandisk provided optimistic fiscal fourth-quarter guidance, projecting revenue between $7.75 billion and $8.25 billion, with non-GAAP diluted net income per share expected in the range of $30 to $33. Chief Executive David Goeckeler characterized the quarter as a "fundamental inflection point," emphasizing a strategic shift toward higher-value end markets, particularly those driven by data centers.
Long-Term Supply Agreements and Stability
Investors are closely monitoring Sandisk's $41.6 billion in remaining performance obligations—revenue that is locked in but not yet recognized, predominantly tied to long-term customer contracts. Only about 15% of this amount is expected to be realized as revenue in the next year. Chief Financial Officer Luis Visoso revealed that the company has secured five agreements totaling over $11 billion in financial guarantees, covering more than a third of Sandisk's projected bit supply for fiscal 2027. These deals feature a mix of fixed and variable pricing, allowing Sandisk to benefit from price increases while offering customers some protection against declines.
Industry-Wide AI Demand
The positive sentiment extended to other storage-related companies. Reuters noted that after Sandisk's results, Western Digital (WDC) and Seagate (STX) both flagged robust enterprise storage demand, suggesting that the AI buildout is fueling gains across multiple suppliers. Micron's surge on Friday also lifted other memory names, reinforcing the sector's momentum.
Risks and Valuation Concerns
Despite the upbeat outlook, risks remain. Sandisk acknowledged in its filing that these long-term deals carry execution, financial, and market risks. Failure to meet specifications or deadlines could result in price reductions, penalties, damages, or even contract cancellations. Customer guarantees may not fully compensate for lost revenue if a buyer defaults.
Valuations have become a point of contention after the sharp rally. Michael Ashley Schulman, partner at Cerity Partners, told Reuters that storage stocks are "failing to provide" the upside surprise needed to justify their rapid climb, explaining why some investors backed off despite strong guidance. Similarly, Rob Williams, chief investment strategist at Sage Advisory Services, cited productivity, consumer spending, wealth effects, and company earnings as supporting factors but noted that the key question is whether AI storage demand can sustain the current momentum.
