Key Takeaways
- Sandisk delivered Q3 revenue of $5.95 billion, representing a 97% year-over-year increase, yet shares declined over 6% after market close
- The company’s Datacenter division revenue exploded to $1.47 billion in Q3, more than tripling from the prior year
- Over the trailing 12 months, Seagate and Western Digital shares have skyrocketed approximately 600% and 850% respectively
- Industry analysts at Bank of America characterize the hard disk drive sector as an “oligopoly,” providing Seagate and Western Digital significant pricing leverage
- Artificial intelligence applications are driving storage demand that continues to exceed available supply, enabling price increases across the sector
Sandisk delivered impressive third-quarter results, yet investors responded with skepticism rather than enthusiasm. The company reported quarterly revenue of $5.95 billion, representing a 97% year-over-year jump and significantly exceeding Wall Street’s $4.70 billion projection. On the bottom line, adjusted earnings reached $23.41 per share, substantially above the analyst consensus of $14.54.
Despite these results and a year-to-date gain of approximately 350%, shares tumbled more than 6% during after-hours trading Thursday.
Looking ahead, management’s Q4 revenue guidance of $7.75 billion to $8.25 billion substantially exceeded the $6.49 billion Wall Street forecast. Similarly, the adjusted profit outlook of $30 to $33 per share dwarfed analyst expectations of $22.70.
What explains the negative market reaction? According to Michael Ashley Schulman, analyst at Cerity Partners, the forward guidance lacked the “wow factor” necessary to sustain the stock’s extraordinary momentum. Western Digital experienced a similar fate, falling nearly 8% in the same trading session despite also exceeding estimates and providing above-consensus projections.
CEO David Goeckeler characterized the quarter as transformative. “This quarter marks a fundamental inflection point for Sandisk — where our technology leadership is enabling a deliberate shift in our mix toward the highest-value end markets, led by Datacenter,” he stated.
The Datacenter business emerged as the clear highlight, with Q3 revenue surging to $1.47 billion—more than triple the prior-year figure. Artificial intelligence applications demand massive quantities of flash storage, and with demand outstripping supply, Sandisk maintains significant pricing flexibility.
The AI Storage Revolution Accelerates
The data storage industry has emerged as one of the primary beneficiaries of AI infrastructure expansion. Modern data centers require high-capacity storage solutions to archive, train, and process massive AI datasets. While graphics processing units provide computational power, hard disk drives and flash memory systems manage the data—and that requirement shows no signs of moderating.
Seagate announced fiscal 2025 annual revenue of $9.10 billion, marking a 39% year-over-year increase. The company’s most recent quarterly performance reached $3.11 billion, up 44% and surpassing the $2.95 billion analyst estimate. Adjusted earnings per share of $4.10 exceeded the $3.50 consensus forecast.
Western Digital recorded fiscal 2025 revenue of $9.52 billion, representing a 51% year-over-year expansion. Second-quarter revenue of $3.02 billion topped Wall Street’s $2.98 billion projection. Adjusted earnings per share of $2.13 beat the $1.95 expectation.
Bank of America’s Wamsi Mohan characterized the hard disk drive industry as an “oligopoly,” with limited competitors and minimal risk of market disruption from new entrants. This market structure provides Seagate and Western Digital with substantial pricing authority as technology companies compete for storage infrastructure.
Strategic Contracts and Emerging Technologies
Mohan highlighted the industry’s transition toward long-term supply commitments as creating more stable, recurring revenue streams. Both Seagate and Western Digital are progressively securing extended customer agreements rather than depending exclusively on transactional hardware purchases.
Heat-assisted magnetic recording (HAMR) technology represents another significant catalyst. This innovation enables manufacturers to increase data density on existing drive platforms, reducing material expenses while expanding storage capacity.
In Mohan’s optimistic scenario, Seagate could see earnings approach $45 per share by 2028, supporting a price target of $700. For Western Digital, his analysis projects potential earnings of $33 per share with a corresponding price target of $495.
Prior to Thursday’s after-hours decline, Sandisk stock had appreciated approximately 350% during 2025.
