Mark Hulbert: The ‘Single Greatest Predictor of Future Stock Market Returns’ has a message for us from 2030 No Comments Uncategorized Percentage of stock U.S. households own determines the market’s 10-year return, writes Mark Hulbert. Percentage of stock U.S. households own determines the market’s 10-year return, writes Mark Hulbert. 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)