Both in Surgical Instruments

iRhythm Holdings vs AtriCure

Over the past year IRTC returned −31.1% and ATRC returned +77.5%; their daily moves had a correlation of 0.44.

IRTC −31.1% ATRC +77.5%Growth of $1, one year, split-adjusted
MetricIRTCATRC
Price$127.46$60.42
Market cap$4.20B$3.07B
Today+1.02%+0.90%
1 month+16.8%+7.2%
6 months+7.9%+105.6%
Year to date−28.2%+52.7%
1 year−32.0%+74.9%
Revenue growth (YoY)+20.1%+12.8%
Gross margin72.8%77.2%
Net margin−0.2%5.8%
P/E (TTM)—291.3×
Price / sales5.1×5.4×
Net cash-$59.8M$106.8M
Dividend yield——
Volatility (60d)40.7%37.4%
Short % of float9.5%10.0%
Next earnings——

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