Fiber, Cable & Connectors

AI halls use many times the fiber of a conventional data centre. High-density fiber and connectors became capacity-constrained alongside optics.

Glass preform→Fiber→Cable→Connector

Tightness score ⓘ

#26 of 56

▲ Tightening

Supply concentration4

Lead time3

Capex intensity3

Geopolitical exposure2

Pricing power4

Lead time

6–12 mo

Theme 1M

−19.8%

% in uptrend

Metric to watch

Corning optical segment growth, Fujikura data-centre commentary, and Amphenol IT datacom orders.

What would prove us wrong

Weakens if fiber pricing softens with new capacity while AI builds continue.

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
GLW Corning	Optical fiber and connectivity for AI halls	NYSE US	$123.3	−4.32%	−23.1%	−15.8%	+41.6%	−51.7%	2027-01-26
5803.T Fujikura	High-density optical fiber and cable	TSE Japan	¥3,918.0	−6.60%	−25.0%	−3.4%	+36.0%	−49.9%	2026-11-10
5802.T Sumitomo Electric	Optical fiber, HV cable and compound semis	TSE Japan	¥1,770.0	−5.35%	−23.6%	−18.4%	+14.2%	−48.9%	2026-10-30
APH Amphenol	Connectors and interconnect for AI racks	NYSE US	$79.30	−3.39%	−7.4%	−2.8%	+17.9%	−10.5%	2027-01-27

Auto-updated