About software, not hardware — Deal expected to close as soon as this summer. Walmart announced an agreement to buy Vizio today. Irvine, California-based Vizio is best known for lower-priced TVs, but its real value to Walmart is its advertising business and access to user data. Walmart said it's buying Vizio for approximately $2.3 billion, pending regulatory clearance and additional closing conditions. Vizio can also terminate the transaction over the next 45 days if it accepts a better offer...