Both in Telephone Equipment

Fabrinet vs Ciena

Over the past year FN returned +16.6% and CIEN returned +146.3%; their daily moves had a correlation of 0.69.

FN +16.6% CIEN +146.3%Growth of $1, one year, split-adjusted
MetricFNCIEN
Price$424.12$354.92
Market cap$15.20B$50.33B
Today+3.45%+3.12%
1 month+2.4%−6.2%
6 months−13.8%−2.8%
Year to date−6.8%+51.8%
1 year+18.2%+150.1%
Revenue growth (YoY)+44.6%+37.0%
Gross margin12.0%45.4%
Net margin10.6%15.9%
P/E (TTM)32.1×76.9×
Price / sales3.3×8.4×
Net cash$875.1M-$599.8M
Dividend yield——
Volatility (60d)80.0%74.7%
Short % of float4.3%2.5%
Next earnings——

Shading marks the stronger figure where one clearly exists (lower is better for valuation and volatility).