Silicon Wafers & Chemicals

Prime wafers and ultra-pure chemicals are concentrated, but capacity is ahead of non-AI demand. A latent rather than active constraint.

Polysilicon→Ingot→Prime wafer→Fab

Tightness score ⓘ

#47 of 56

▼ Easing

Supply concentration4

Lead time3

Capex intensity4

Geopolitical exposure3

Pricing power2

Lead time

6–12 mo

Theme 1M

−13.0%

% in uptrend

50%

Metric to watch

Wafer shipment data (SEMI), SUMCO/Shin-Etsu pricing, and Entegris AI-node mix.

What would prove us wrong

Strengthens if 300mm wafer inventories normalise and long-term contract pricing turns up.

Dependencies

Equal-weight · rebased 100 · 1Y

Stocks we track

Who controls this bottleneck

Roles, not recommendations. Delayed prices; local currency.

Stock	Role	Listing	Last	1D	1M	3M	YTD	Off 52w high	Next earnings
4063.T Shin-Etsu Chemical	Silicon wafers and photoresists	TSE Japan	¥5,966.0	−0.73%	+0.3%	+1.9%	+23.9%	−23.3%	2027-01-26
3436.T SUMCO	300mm prime silicon wafers	TSE Japan	¥2,321.5	−7.93%	−30.0%	−26.1%	+62.2%	−56.3%	2026-11-11
6488.TWO GlobalWafers	Silicon wafers incl. US capacity	TPEx Taiwan	NT$756.0	−7.13%	−20.0%	−12.5%	+86.9%	−49.9%	—
ENTG Entegris	Ultra-pure chemicals, filtration and materials	NASDAQ US	$154.4	−3.51%	−2.5%	+23.4%	+83.8%	−16.0%	2026-10-29

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