Nearline HDD (AI mass storage)
Seagate Technology
A mass-capacity nearline-HDD duopolist. AI-data explosion drove Q4 revenue $2.44B (+30%), with nearline 91% of mass-capacity exabytes (137EB, +52%). With a HAMR 40TB/44TB roadmap, it is qualified at 3 of 8 global hyperscalers and its 2026 production is already sold out. A picks-and-shovels layer storing AI training and inference data, a mass-storage axis distinct from NAND.
STX Updated Jul 12, 2026 3 AI consumers· 1 recurring
Per the valuechain.wiki graph, Seagate Technology is directly linked to 4 companies (2 supply, 2 revenue relationships) and reaches 26 companies within two hops; the links are backed by 7 dated sources, 1 of them primary filings (as of 2026-07-12).
Financials & Segments
- Total revenue · Q4 2025 revenue $2.44B (+30%)
- Customer concentration · 91% nearline; hyperscalers; 2026 sold out.
- Segments · Nearline HDD (cloud) · Legacy/other
Revenue from
- hyperscalers (nearline cloud) High confidence
Nearline HDDs to hyperscalers (91% of mass capacity, 137EB). - Amazon Medium confidence
Supplies mass-capacity nearline HDDs to cloud like AWS — with nearline at 91% of mass-capacity exabytes, Amazon-scale hyperscaler demand is the center of Seagate's revenue. - Microsoft Medium confidence
Supplies HAMR-qualified nearline HDDs to hyperscalers like Microsoft — AI-data accumulation flows into high-capacity drive demand, so hyperscaler qualification (3 of 8) is the gateway to volume visibility.
Pays to
- 파이슨 High confidence
SSD controller procurement: Phison controllers in mainstream SATA SSDs since 2017; co-designed X1 enterprise controller in 2022.Confirms EN StorageNewsletter Published Aug 12, 2022: Phison X1 Controller Platform Designed in Partnership With Seagate - HDD glass substrate (Hoya) Medium confidence
Sources glass substrates for Mozaic (HAMR) media from Hoya, the dominant glass-substrate supplier.Mentions EN Tom's Hardware Published May 15, 2025: HDD components maker Hoya describes 22TB & 24TB hard drives - HAMR capacity expansion · R&D (undisclosed) Low confidence
HAMR 40/44TB capacity and R&D. - heads, media & components (undisclosed) Low confidence
Heads, media and mechanical parts.
Value-chain ripple (2 tiers)
Following node-to-node links up to 2 tiers; each firm is shown once, at its nearest tier.
| Company | Chain | '21 | '22 | '23 | '24 | '25 | YTD |
|---|---|---|---|---|---|---|---|
| Datadog | lead2 | +80.9 | -58.7 | +65.1 | +17.7 | -4.8 | +89.4 |
| Palo Alto Networks | lead2 | +56.7 | -24.8 | +111.3 | +23.4 | +1.2 | +76.9 |
| CrowdStrike | lead2 | -3.3 | -48.6 | +142.5 | +34 | +37 | +59.7 |
| Illumina | lead2 | +2.8 | -46.9 | -31.1 | -1.3 | -1.8 | +45 |
| Starbucks Corp | lead2 | +11.1 | -13.2 | -1.2 | -2.5 | -5.3 | +27.4 |
| Johnson Controls | lead2 | +77.4 | -19.3 | -7.6 | +39.8 | +53 | +20 |
| Snowflake | lead2 | +20.4 | -57.6 | +38.6 | -22.4 | +42.1 | +19.2 |
| Airbnb Inc | lead2 | · | -48.6 | +59.2 | -3.5 | +3.3 | +9.5 |
| Costco Wholesale | lead2 | +51.8 | -19 | +49 | +39.6 | -5.4 | +6.6 |
| Walmart Inc | lead2 | +2 | -0.5 | +12.9 | +74 | +24.5 | +2.6 |
| Schrodinger | lead2 | -56 | -46.3 | +91.5 | -46.1 | -7.3 | -7.8 |
| MercadoLibre, Inc. | lead2 | -19.5 | -37.2 | +85.7 | +8.2 | +18.5 | -8 |
| Uber | lead2 | -17.8 | -41 | +149 | -2 | +35.5 | -8.8 |
| The Walt Disney Company | lead2 | -14.5 | -43.9 | +4.3 | +24.4 | +3.3 | -15.3 |
| Coupang | lead2 | · | -49.9 | +10.1 | +35.8 | +7.3 | -20.3 |
| Netflix | lead2 | +11.4 | -51.1 | +65.1 | +83.1 | +5.2 | -21.7 |
| ServiceNow | lead2 | +17.9 | -40.2 | +82 | +50.1 | -27.7 | -29.7 |
| Amazon | lead1 | +2.4 | -49.6 | +80.9 | +44.4 | +5.2 | +6.3 |
| Microsoft | lead1 | +52.5 | -28 | +58.2 | +12.9 | +15.6 | -20 |
| Seagate Technology | node | +87.5 | -51.4 | +69.1 | +4.1 | +225.3 | +231.4 |
| Hoya Corporation | benef1 | +10.8 | -3 | +34.4 | +11.3 | +24.9 | -2.9 |
| Phison Electronics | benef1 | +26.8 | -10.7 | +45.1 | -6.7 | +418.3 | -6 |
| Kioxia | benef2 | · | · | · | · | +1082.1 | +260.5 |
| Micron Technology | benef2 | +24.2 | -45.9 | +71.9 | -1 | +240.2 | +243.3 |
| TSMC | benef2 | +12.1 | -36.7 | +42.3 | +92.6 | +55.9 | +43.6 |
YTD as of 2026-07-10 · source: Yahoo Finance
Seagate's thesis is 'the picks-and-shovels of an AI-data-storing nearline-HDD duopoly.' As the vast data AI generates flows into mass storage, nearline is 91% of mass-capacity exabytes (137EB, +52%), and Q4 revenue +30% with 2026 production sold out shows a clear supplier advantage — a low-cost mass-storage axis distinct from NAND. In the graph, hyperscalers like Microsoft and Amazon depend on its HAMR high-capacity drives (qualified at 3 of 8) downstream, while upstream it hinges on Hoya (Mozaic HAMR glass substrate, the dominant supplier) and Phison (SSD controllers). The keys are the HAMR 40/44TB ramp and broader hyperscaler qualification; with the stock far ahead of its chain (triple-digit gains two years running), give-back risk is high if demand volume fails to follow.
Analysis generated from returns as of 2026-07-10Analyst ratings
Consensus: Buy 2 · Hold 1 · Sell 0 · Avg. target $1,037 · Price $910.747 (07-11) · Upside +14%