SanDisk Stock Jumps 5.5% as MSCI Inclusion and Mizuho Outlook Defy Market Sell-Off

Key Takeaways

• SanDisk shares closed 5.5% higher at $1,566.70 on August 31, outperforming a broader decline across US equities.
• The rally coincided with SanDisk’s inclusion in the MSCI World Index, while Mizuho maintained an Outperform rating and projected substantial earnings growth through fiscal 2028.
• Strong NAND pricing, AI-related storage demand and record fiscal Q4 results support the outlook, although elevated expectations and future capacity expansion could keep the stock volatile.

SanDisk Shares Rally Against a Weak Market Backdrop

SanDisk shares rose 5.5% to close at $1,566.70 on Monday, August 31, reversing an earlier decline and finishing among the strongest performers in the US technology sector.

The gain stood out against a broadly weaker market. The S&P 500 fell 0.33%, the Nasdaq Composite slipped 0.12%, and the Dow Jones Industrial Average declined 0.70%. Renewed military exchanges between the United States and Iran pushed Brent crude above $90 per barrel, reviving concerns that higher energy costs could prolong inflation and encourage the Federal Reserve to maintain a restrictive policy stance.

SanDisk’s strength therefore reflected company-specific and technical catalysts rather than a broader improvement in risk appetite. Its late-session advance coincided with index-related demand, while the latest bullish assessment of the NAND memory market reinforced confidence in the company’s longer-term earnings potential.

MSCI World Index Inclusion Adds a Technical Catalyst

SanDisk was added to the MSCI World Index at the close of trading on August 31. MSCI announced the change on August 12, identifying SanDisk as one of the three largest additions to the developed-market benchmark by full company market capitalisation.

Index inclusion can generate additional demand because passive funds and other portfolios that track the benchmark must adjust their holdings. This mechanism may help explain why SanDisk strengthened sharply toward the end of the session after trading lower earlier in the day.

The inclusion does not alter SanDisk’s operating performance, but it may broaden institutional ownership and improve trading liquidity. Index-related buying can also produce unusually large volumes around the implementation date, meaning part of Monday’s rise may have reflected portfolio rebalancing rather than a fundamental reassessment of the company.

Mizuho Projects Fivefold EPS Growth by Fiscal 2028

Fundamental sentiment was supported by Mizuho, which maintained its Outperform rating on SanDisk while adjusting its price target to $1,875 from $1,900. The revised target represents approximately 20% potential upside from Monday’s closing price, although analyst targets remain forecasts rather than guaranteed outcomes.

Mizuho expects SanDisk’s earnings per share to increase fivefold between fiscal 2026 and fiscal 2028. The firm also estimates that the company could generate an aggregate of $30 billion to $50 billion in free cash flow during fiscal 2027 and 2028, potentially providing enough capital to repurchase 25% to 30% of its outstanding shares.

SanDisk has already expanded its official repurchase authorisation. Its board approved an additional $14 billion programme in August, bringing the remaining authorised amount to $15.5 billion. At its subsequent investor day, management said it expects to return 100% of excess cash to shareholders after funding the business.

The scale and timing of future repurchases will still depend on cash generation, the share price, working-capital requirements and investment spending. The projected 25% to 30% reduction should therefore be treated as an analyst estimate, not a committed buyback target.

Fiscal Q4 Results Highlight the NAND Market Upswing

The positive outlook follows a strong fiscal fourth-quarter report. SanDisk generated revenue of $8.97 billion, representing growth of 372% from the same quarter a year earlier and 51% from the preceding quarter.

Approximately one-third of the sequential increase came from higher shipment volumes, while two-thirds resulted from stronger pricing. Non-GAAP diluted earnings reached $39.25 per share, compared with $0.29 in the prior-year period. GAAP diluted earnings were $43.97 per share.

Gross margin expanded to 84.6% from 26.2% a year earlier, illustrating the effect that stronger NAND pricing and a more favourable product mix had on profitability. Data-centre revenue reached $2.98 billion, more than doubling sequentially, while edge-device revenue increased 48% to $5.43 billion.

For the full fiscal year, revenue rose 175% to $20.25 billion. SanDisk also generated $11.49 billion in free cash flow and $8.74 billion in adjusted free cash flow. The company expects fiscal first-quarter 2027 revenue of $10.3 billion to $10.8 billion and non-GAAP diluted EPS of $44 to $46.

AI Demand and Long-Term Contracts Support Revenue Visibility

AI infrastructure has become an increasingly important source of NAND demand. Large AI systems require substantial storage capacity for training data, inference workloads and data movement between different levels of the memory hierarchy.

SanDisk has also expanded its New Business Model agreements, which combine committed purchase volumes, minimum financial guarantees and structured pricing. The company has signed agreements with eight customers covering approximately 50% of its fiscal 2027 bit supply and about two-thirds of its fiscal 2028 supply.

These contracts may reduce exposure to abrupt changes in spot pricing and improve visibility over future cash flow. SanDisk’s long-term financial model targets mid-to-high-teens annual revenue growth between fiscal 2028 and 2030, an adjusted gross margin of approximately 80% and an adjusted free-cash-flow margin near 50%.

Those targets remain dependent on sustained AI demand, disciplined industry supply and the successful execution of SanDisk’s technology roadmap.

Kioxia Investment Strengthens Capacity but Introduces Longer-Term Supply Risk

SanDisk and Kioxia have announced planned investments exceeding $31 billion, equivalent to approximately five trillion yen, in their Japanese manufacturing partnership through 2032. The spending remains contingent on government support and will cover the Yokkaichi and Kitakami plants, related infrastructure and new flash-memory technologies.

The programme could help the companies meet rising demand for high-capacity and power-efficient storage. However, it also introduces a longer-term consideration for investors. New capacity may eventually ease the supply shortage that has supported NAND prices and margins.

Because the investment runs through 2032, it is unlikely to produce an immediate supply surge. The more important variables will be the pace of capacity additions, demand growth and whether other manufacturers also accelerate expansion.

What Could Move SanDisk Stock Next?

SanDisk’s outlook remains closely tied to NAND pricing, AI-related data-centre spending and the company’s ability to sustain unusually high margins. Long-term contracts may reduce cyclicality, but they cannot eliminate industry risks such as weaker device demand, faster-than-expected capacity growth or technological competition.

The stock’s historic 2026 advance also means expectations are elevated. Any slowdown in pricing, reduced free-cash-flow forecasts or delays in next-generation NAND products could trigger sharp corrections. Conversely, continued supply tightness, stronger AI storage demand and additional capital returns could support the bullish earnings case.

Monday’s 5.5% gain reflected a combination of index-related buying and confidence in SanDisk’s earnings outlook. The next phase will depend less on technical flows and more on whether the company can convert the NAND shortage and AI memory cycle into durable growth.