Western Digital benefits from HDDs' low storage cost and growing cloud demand, with higher NAND prices adding pricing power. Nearline bit demand normally grows 20-25% with some deflation, while AI data growth now exceeds 30%; HDD costs ~$0.02-$0.03/GB versus ~$0.25 for NAND. Before AI, the consolidated, ~95% cloud-exposed market looked worth a low-to-mid-teens multiple of normalized EPS. Entry barriers are extremely high, but irrational competition among the three players is a risk. x.com  x.com  … Show more

AI and data centers now drive HDD demand, so Western Digital's long customer visibility suggests AI demand could last into 2030-31. CEO Irving Tan says the company has good visibility through 2030-31 across its seven top customers, with demand signals increasing over time. That adds to the case for durable demand, though the AI runway is an inference from the HDD outlook. x.com 

AI data and content creation could lift Seagate's and Western Digital's cross-cycle earnings even if supply catches up and pressures prices and margins. Western Digital reported hyperscaler demand signals through 2030/31, making 2013-2024 normalized earnings a poor baseline. Still not a huge fan of their stocks given their large premium to memory makers and Toshiba's production ramp. x.com  x.com 

Western Digital is about to play catch-up with the memory space. It has lagged as Micron, Sandisk, Samsung and SK Hynix ride NAND, DRAM and HBM price spikes, because it rides capacity storage for AI data lakes, which is real demand but a different, slower-moving market. x.com 

Hard drives from Western Digital and Seagate are shouldering the bulk of the AI revolution's storage, and physical AI taking off would add even more demand. x.com 

A supply response could compress Western Digital's pricing and margins, eroding its apparent cheapness. Its 2013-24 normalized earnings merit a look: even huge demand growth in other industries eventually drew supply and mediocre returns. A digestion/reset would hurt buy-and-hold investors, though the outcome is uncertain. Pre-AI economics were mediocre and unlikely to become amazing post-AI; TSMC's stronger pre-AI economics make its post-AI case better. x.com  x.com  x.com 

Western Digital's hard drives capture AI-generated data, supporting stronger margins and guidance. Most data from models, agents and robots ends up on hard drives. Revenue rose 55% to $4.38B, gross margin hit 58.1%, and next-quarter revenue guidance rose to $5.0-5.2B versus $4.57B expected; EPS guidance midpoint is 21% above consensus. Before earnings, at ~15x earnings it looked priced as a cyclical, not an AI winner. Overweight, $613 target and 62% indicated upside in the pre-earnings report. … Show more

SanDisk's data-center flash growth shows AI inference is becoming a larger storage customer. Data-center revenue reached $4.8bn, up 61% in a quarter and over 40% of sales; total revenue of $11bn and EPS of $49.51 beat expectations. Guidance of $12.4bn revenue and $56 EPS suggests feared supply normalization has not yet eroded pricing. Overweight, with a $2,700 target. x.com  x.com 

Seagate and Western Digital look more challenged because hard-disk drives appear to be a less-understood cycle play rather than a real AI thematic. The end state of AI fundamentals looks bearish, with severe multiple compression despite beats, though the path should be a bleed lower with violent rallies back up. Themes tied to agentic activity, such as CPUs, CXL and optics, should still outperform, since tech transitions and share shifts can be monetized whatever the cycle does. x.com  x.com 

Sandisk benefits because AI needs more storage, and long-term customer commitments could make NAND demand and pricing more predictable. x.com