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Home/Chips & Networking/Bottlenecks/Storage
US / Japan / Korea · Chips & Networking

AI Storage (Enterprise SSD & HDD)

AI training data and inference logs need exabytes of storage. Two companies make nearly all hard drives and a few make NAND, so supply is slow to follow demand.

NAND / platters→Drive→Storage server→Cluster
72
Tightness score ⓘ
#20 of 56
▲ Tightening
Supply concentration5
Lead time3
Capex intensity4
Geopolitical exposure3
Pricing power4
Lead time
6–12 mo
Theme 1M
−27.5%
% in uptrend
0%
Metric to watch

HDD lead times, NAND contract prices, and enterprise SSD revenue at SanDisk, Kioxia, Seagate and Western Digital.

What would prove us wrong

Weakens if NAND and HDD makers add capacity faster than AI storage demand grows.

Dependencies
↑ supplier  AI Memory (HBM & DRAM)88 ↓ customer  AI Server Racks (Taiwan ODMs)52

Storage theme performance

Equal-weight · rebased 100 · 1Y
Stocks we track

Who controls this bottleneck

Roles, not recommendations. Delayed prices; local currency.

StockRoleListingLast1D1M3MYTDOff 52w highTrendNext earnings
SNDK
SanDisk
 NAND flash and enterprise SSDs NASDAQ
US		 $937.5 −4.11% −33.2% −42.9% +294.9% −59.9% 2026-10-29
WDC
Western Digital
 Hard drives for AI data storage NASDAQ
US		 $311.2 −0.67% −14.5% −38.8% +80.8% −58.3% 2027-01-28
STX
Seagate Technology
 Hard drives (HAMR) for AI data storage NASDAQ
US		 $545.1 −1.19% −23.6% −44.0% +98.6% −50.1% 2027-01-26
285A.T
Kioxia
 NAND flash and enterprise SSDs TSE
Japan		 ¥9,300.0 −2.83% −38.7% −41.5% +167.8% −74.3% 2027-01-28

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