SPG ▼ -0.6% - Simon Property Group, Inc. $SPG - Simon® Launches Simon Media Network™, Turning Real-World Consumer Behavior Into Measurable Business Impact Simon Property Group shares declined 0.6% today following the company's announcement of its new Simon Media Network, a platform designed to convert in-mall consumer behavior data into measurable business outcomes. While the launch represents a potential new revenue stream and strategic expansion into data-driven advertising, investors may have viewed the announcement as incremental rather than transformative enough to drive immediate positive momentum. 27-AUG-2026 12:00 PM ET