Both in Semiconductor Manufacturing Equipment

ACM Research vs Amtech Systems

Over the past year ACMR returned +9.6% and ASYS returned +63.9%; their daily moves had a correlation of 0.44.

ACMR +9.6% ASYS +63.9%Growth of $1, one year, split-adjusted
MetricACMRASYS
Price$45.33$12.80
Market cap$3.16B$224.1M
Today+2.67%+3.90%
1 month−40.5%−28.2%
6 months−14.1%−28.6%
Year to date+14.9%+2.0%
1 year+9.3%+61.4%
Revenue growth (YoY)+36.0%+14.5%
Gross margin46.0%50.0%
Net margin30.4%7.4%
P/E (TTM)21.0×56.0×
Price / sales3.0×2.7×
Net cash$733.4M$82.9M
Dividend yield——
Volatility (60d)68.7%66.4%
Short % of float6.0%11.8%
Next earnings——

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