Both in Computer Storage Devices

Western Digital vs Sandisk

Over the past year WDC returned +231.5% and SNDK returned +1319.5%; their daily moves had a correlation of 0.73.

WDC +231.5% SNDK +1319.5%Growth of $1, one year, split-adjusted
MetricWDCSNDK
Price$415.29$1,719.99
Market cap$149.73B$251.84B
Today−10.22%−3.79%
1 month−7.5%+10.7%
6 months+40.8%+145.2%
Year to date+141.1%+624.6%
1 year+218.0%+1320.1%
Revenue growth (YoY)+43.8%+371.6%
Gross margin54.1%84.6%
Net margin84.9%77.0%
P/E (TTM)16.1×22.0×
Price / sales11.6×12.4×
Net cash$527.0M$4.76B
Dividend yield0.14%—
Volatility (60d)79.7%112.0%
Short % of float4.8%4.0%
Next earnings——

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