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

−16.4%

% 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	$425.4	+1.64%	−5.6%	+8.7%	+41.1%	−12.4%	2027-01-14
ASX ASE Technology	Largest OSAT; takes CoWoS-class overflow	NYSE Taiwan	$39.70	+2.60%	−10.4%	+17.0%	+149.0%	−16.6%	2026-10-29
AMKR Amkor Technology	Advanced packaging OSAT incl. US capacity	NASDAQ US	$37.63	−4.25%	−29.8%	−17.5%	−4.2%	−59.7%	2026-10-26
BESI.AS BE Semiconductor	Hybrid bonding equipment leader	Euronext Netherlands	€147.2	+1.45%	−21.5%	−22.3%	+10.8%	−54.0%	2026-10-22
042700.KS Hanmi Semiconductor	TC bonders for HBM stacking	KRX Korea	₩184,000	−3.66%	−22.2%	−14.4%	+44.9%	−55.1%	2026-10-26
6146.T Disco	Dicing and grinding for thin wafers and HBM	TSE Japan	¥48,410	−1.79%	−8.9%	−29.2%	+1.4%	−45.1%	2026-10-22

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