Both in Medical Labs

Guardant Health vs CareDx

Over the past year GH returned +76.9% and CDNA returned +499.0%; their daily moves had a correlation of 0.26.

GH +76.9% CDNA +499.0%Growth of $1, one year, split-adjusted
MetricGHCDNA
Price$175.00$88.47
Market cap$23.48B$4.65B
Today+2.50%+3.02%
1 month−6.5%+26.7%
6 months+95.5%+327.4%
Year to date+71.3%+369.6%
1 year+88.1%+489.8%
Revenue growth (YoY)+44.3%+39.3%
Gross margin65.4%71.1%
Net margin−35.9%13.8%
P/E (TTM)—36.1×
Price / sales19.8×9.3×
Net cash-$449.5M$250.5M
Dividend yield——
Volatility (60d)44.4%61.8%
Short % of float9.2%13.4%
Next earnings——

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