Mark Hulbert: Why stocks could tumble even as the post-pandemic U.S. economy grows No Comments Uncategorized Profit margins play an underappreciated role in propping up the stock market. Profit margins play an underappreciated role in propping up the stock market. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to print (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on WhatsApp (Opens in new window)