WDCBy Calypso Research6 min read

Western Digital Corporation (WDC) Q4 2025 Earnings Analysis

Storage Struggles: WDC Takes a 10.1% Dive on $3B Revenue

Key Takeaways

Western Digital Corporation (WDC) reported Q4 2025 earnings with revenue of $3.0B, representing a -29.6% year-over-year change. The stock moved -10.1% on earnings day.

The bull case: Robust demand from hyperscalers, stable pricing, and operational efficiency drive margin expansion and long-term growth.

The bear case: Challenges in executing HAMR and potential pricing pressure in a tight storage market may constrain profitability and growth.

Financial Highlights

  • Revenue: $3.0B (-29.6% YoY)
  • Gross Profit: $1.4B (45.7% margin, +10.4% YoY)
  • Operating Income: $963M (31.9% margin, +12.0% YoY)
  • Net Income: $1.8B
  • TTM Revenue: $10.7B

Stock Performance

  • Earnings Day Move: -10.1%
  • Year-to-Date: +49.4%
  • 1-Year Return: +472.1%
  • vs. S&P 500 (since earnings): +83.6%
  • vs. Nasdaq (since earnings): +85.3%

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What Management Said

Here are the key debates and direct quotes from Western Digital Corporation's Q4 2025 earnings call:

Gross Margin Durability and Incremental Margins

Sentiment: Positive

"We delivered 46.1% gross margin, up 220 basis points quarter-over-quarter, up 770 basis points year-over-year... incremental gross margin is on or about 75%, depending on how you look at it." — Kris Sennesael
"In pricing, we see a stable pricing environment with prices on a price per terabyte kind of flattish to slightly up... last quarter, it was up 2%, 3% on an ASP per terabyte basis." — Kris Sennesael

Long-Term Agreements (LTAs) and Customer Pricing Dynamics

Sentiment: Positive

"We’re pretty much sold out for calendar '26. We have firm POs with our top seven customers and LTAs with two for calendar '27 and one for calendar '28." — Tiang Yew Tan
"These LTAs have a combination of volume of exabytes and price... the pricing reflects the value that we’re delivering to customers, especially as the business moves towards inference where monetization occurs." — Tiang Yew Tan

Transition to HAMR and Its Impact on Cost and Margins

Sentiment: Positive

"We are confident once we start ramping HAMR that it will be neutral to accretive to our gross margins." — Kris Sennesael
"We’ve pulled in the qualification already by half a year... HAMR qualification has started with one hyperscale customer, and we’re initiating with another imminently." — Tiang Yew Tan

UltraSMR Adoption and Margin Contribution

Sentiment: Positive

"Last quarter, we crossed 50% mix on UltraSMR in the nearline portfolio, and we actually see that increasing... UltraSMR is very accretive for us from a margin standpoint as well." — Tiang Yew Tan
"We announced UltraSMR-enabled JBOD platforms, which expand UltraSMR adoption to a broader customer set, delivering hyperscale-like performance and higher storage density." — Ambrish Srivastava

Exabyte Growth Driven by AI and Inference Workloads

Sentiment: Positive

"Inference is going to drive a significant amount of data storage requirement... hyperscalers are masters of managing the economics of storage tiers, and HDDs are well-suited with superior economics." — Tiang Yew Tan
"We delivered 215 exabytes last quarter, up 22% year-over-year, driven largely by cloud demand and higher capacity drives." — Tiang Yew Tan

Bull Case

Robust demand from hyperscalers, stable pricing, and operational efficiency drive margin expansion and long-term growth.

Bear Case

Challenges in executing HAMR and potential pricing pressure in a tight storage market may constrain profitability and growth.

Looking Ahead

With revenue declining -29.6% year-over-year, investors will be watching for signs of a turnaround at Western Digital Corporation, particularly around gross Margin Durability and Incremental Margins. With operating margins at 31.9%, margin trends will remain a focal point. The market's negative earnings-day reaction signals that investors need to see stronger execution, and the next earnings report will be a key catalyst for the stock.

Frequently Asked Questions

What was Western Digital Corporation's revenue in Q4 2025?

Western Digital Corporation reported Q4 2025 revenue of $3.0B, representing a -29.6% year-over-year change.

Did Western Digital Corporation beat earnings expectations in Q4 2025?

The stock declined -10.1% on earnings day, suggesting the results fell short of market expectations. The current bull case centers on: Robust demand from hyperscalers, stable pricing, and operational efficiency drive margin expansion and long-term growth.

What is the bull case for WDC stock?

The bull case for WDC centers on: Robust demand from hyperscalers, stable pricing, and operational efficiency drive margin expansion and long-term growth.

What is the bear case for WDC stock?

The bear case for WDC centers on: Challenges in executing HAMR and potential pricing pressure in a tight storage market may constrain profitability and growth.

How has WDC stock performed since its Q4 2025 earnings?

WDC moved -10.1% on the day of its Q4 2025 earnings report, outperforming the S&P 500 by +83.6% since earnings. Year-to-date, the stock has returned +49.4%.

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