SanDisk (SNDK) Stock; Plunges 14% as China NAND Threat Wipes Out $49B Market Value

TLDRs;

• SanDisk shares plunged as investors feared rising Chinese NAND competition could pressure future margins.
• The two-day selloff erased nearly $49 billion in market value despite strong earnings guidance.
• China’s semiconductor expansion raised concerns over NAND supply growth and pricing pressure.
• Investors now await SanDisk’s earnings report and outlook for future AI-driven demand.

SanDisk Corporation (NASDAQ: SNDK) stock plunged about 14% as investors grew concerned that China’s expanding semiconductor industry could increase competition in the NAND memory market. The selloff wiped out nearly $49 billion in market value over two sessions, making SanDisk one of the biggest decliners among chip stocks.

The pressure followed concerns that China’s semiconductor support programs could accelerate the growth of domestic memory producers, including NAND competitor Yangtze Memory Technologies Corporation (YMTC). While SanDisk does not directly compete with CXMT, which focuses on DRAM, investors fear broader Chinese chip expansion could eventually weigh on NAND pricing.

SanDisk closed Monday at $1,278.23 after an 11% drop, with premarket trading pointing to further losses. The stock’s two-day decline exceeded 20% from the previous week’s close as investors reassessed the company’s long-term competitive position.

NAND Competition Concerns Grow

The market reaction reflects growing worries about future memory supply. Investors are watching whether increased Chinese production capacity could create excess supply and pressure profit margins across the NAND industry.

Sandisk Corporation, SNDK

YMTC has become a key focus, holding around 11.8% of the global NAND market last year. Expectations that the company could expand capacity significantly have raised concerns that stronger competition could limit SanDisk’s pricing power.

SanDisk also underperformed the broader semiconductor sector during the selloff. Micron Technology (NASDAQ: MU) declined about 2.2%, while the Philadelphia Semiconductor Index also fell roughly 2.2%, highlighting investor sensitivity toward SanDisk’s NAND exposure.

Strong Outlook Faces Risks

Despite the stock decline, SanDisk maintains a strong near-term financial outlook. The company expects fiscal fourth-quarter revenue between $7.75 billion and $8.25 billion, with adjusted earnings per share forecast between $30 and $33.

Management has been working to reduce the volatility of the memory business through long-term customer agreements. CEO David Goeckeler has emphasized building more predictable revenue streams through extended contracts and supply commitments.

However, investors remain cautious because memory markets are highly cyclical. A rapid increase in supply or weaker NAND pricing could challenge the company’s margins despite strong demand trends.

SanDisk’s AI opportunity remains a major part of its growth story. Datacenter revenue reached $1.47 billion in the latest quarter, accounting for about 25% of total sales. Still, most revenue comes from edge and other markets, keeping the company exposed to traditional memory cycles.

Earnings Could Set Direction

Investors are now looking ahead to SanDisk’s fiscal fourth-quarter earnings report on August 5. The market will closely watch NAND pricing, customer demand, future capacity plans, and margin expectations.

The company’s August 13 Investor Day will also provide more insight into its long-term strategy and growth plans.

The recent decline has created uncertainty over whether investors have overreacted or correctly identified a rising competitive threat. Continued AI demand and disciplined supply could support SanDisk’s recovery, but faster Chinese memory expansion could keep pressure on the stock.

For now, investors are focused on how SanDisk navigates a changing global semiconductor landscape where competition and supply dynamics remain key risks.