Chip Packaging (CoWoS)

An accelerator is useless until logic and HBM are integrated on an interposer. 2.5D/3D capacity, hybrid bonders and TC bonders gate output.

Interposer→Bonding→Assembly→Module

Tightness score ⓘ

#8 of 56

■ Stable

Supply concentration5

Lead time4

Capex intensity4

Geopolitical exposure5

Pricing power5

Lead time

12–18 mo

Theme 1M

−18.2%

% in uptrend

Metric to watch

CoWoS capacity targets, OSAT overflow orders, and hybrid-bonder shipments.

What would prove us wrong

Weakens if CoWoS expansions run ahead of accelerator demand and OSAT utilisation drops.

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
TSM Taiwan Semiconductor	Leading-node foundry and CoWoS packaging chokepoint	NYSE Taiwan	$406.1	−5.95%	−11.6%	+0.3%	+34.7%	−16.4%	2027-01-14
ASX ASE Technology	Largest OSAT; takes CoWoS-class overflow	NYSE Taiwan	$39.50	−11.34%	−11.7%	+7.7%	+147.8%	−17.0%	2026-10-29
AMKR Amkor Technology	Advanced packaging OSAT incl. US capacity	NASDAQ US	$39.50	−4.15%	−25.3%	−22.2%	+0.5%	−57.7%	2026-10-26
BESI.AS BE Semiconductor	Hybrid bonding equipment leader	Euronext Netherlands	€154.0	−5.72%	−19.5%	−29.3%	+15.9%	−51.9%	2026-10-22
042700.KS Hanmi Semiconductor	TC bonders for HBM stacking	KRX Korea	₩182,700	−7.21%	−27.5%	+1.8%	+43.9%	−55.4%	2026-10-30
6146.T Disco	Dicing and grinding for thin wafers and HBM	TSE Japan	¥49,540	−5.31%	−13.8%	−9.4%	+3.8%	−43.8%	2026-10-22

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