Over the past 12 months, shares of the home generator company have shot up twice as fast as Tesla's.<p> </p><p>Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a></p>

Back-to-Work Fashion Angst

Get the lowdown on high finance each week with Barron’s columnist Jack Hough. Business leaders and trendspotters, insights and absurdities—this is Wall Street like you've never heard before.