Key Points

  • It was easy to miss the $14 billion stock buyback amid Sandisk more than quadrupling its sales year over year and reaching a 77% net profit margin.

  • The fact that the buyback is the icing on the cake instead of the main entree is a bullish signal.

  • Sandisk is one of the top beneficiaries of memory chip tailwinds, which will continue for multiple years.

  • 10 stocks we like better than Sandisk ›

Sandisk (NASDAQ: SNDK) has been the hottest stock in the S&P 500, and its $14 billion buyback can extend the rally. Buybacks artificially increase stock prices by reducing the number of shares outstanding, but there are a few subtle signals they can provide.

While buybacks aren't always good, they are in this case and warrant a closer look into Sandisk.

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What the buyback means

The announcement arrived when Sandisk reported its fiscal 2026 fourth-quarter earnings in August. The company authorized $14 billion in stock buybacks, bringing its total remaining authorization to $15.5 billion.

That's more than 5% of Sandisk's current market cap, which indicates meaningful buying pressure is on the way. Each person's stake will make up a larger percentage of the company as Sandisk initiates buybacks. That will make it more difficult for shorts to hold their positions, and it gives shareholders another incentive to remain bullish.

Buybacks can be bad for mature companies that are just trying to please shareholders. Any money put into a buyback could be reinvested in the business. However, Sandisk has plenty of money to spare and an appealing long-term growth trajectory. A 51% sequential jump in sales plus a 77% net profit margin put Sandisk in rare company.

Long-term memory tailwinds remain intact

Memory is a key part of the artificial intelligence (AI) bottleneck. Meta Platforms recently launched its Muse app, and Microsoft just introduced an updated Copilot app to keep up with Anthropic.

All of these apps require substantial amounts of AI infrastructure in the background, including memory products like the ones Sandisk provides.

These developments came before Sandisk released its latest earnings report, which anticipates up to $10.8 billion in fiscal 2027 Q1 sales. That high end of guidance represents a 20% sequential boost in sales.

Sandisk has locked up multiyear deals with several customers, squashing concerns about a cyclical downturn affecting the stock. Grand View Research backs up this assertion, projecting a 30.6% compound annual growth rate (CAGR) for the AI industry through 2033.

The key thing about Sandisk's buyback is that it's not the only thing exciting investors. If a buyback is the only catalyst left to excite investors, it's a sign that the company has matured and offers few growth prospects going forward.

However, it was easy to miss the fact that Sandisk announced a $14 billion buyback in its fiscal 2026 Q4 results. That's a sign of how good Sandisk's current and future fundamentals are. When a buyback serves as icing on the cake rather than the main entree, it's a positive signal for long-term shareholders.

Should you buy stock in Sandisk right now?

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Marc Guberti has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Meta Platforms and Microsoft. The Motley Fool has a disclosure policy.