Simon Property Group, one of the largest mall operators in the United States, has launched a retail media network, joining Kroger, Walmart, Target, and a growing roster of retailers packaging first-party shopper data into ad inventory.

The move, reported by Sixteen:Nine, marks the first major entry by a US mall REIT into the retail media category. Simon controls large concentrations of foot traffic across outlet centers, lifestyle centers, and traditional malls throughout North America.

Why is Simon entering retail media now?

The retail media category has scaled quickly over the past several years as grocers, big-box chains, and pure-play e-commerce operators built first-party data businesses. Mall operators were the missing format among major retail segments — until now.

For Simon, the launch converts a structural asset — physical shopper flow through owned properties — into a monetizable media product. Apparel, beauty, and lifestyle brands with national footprints and store-based sales targets are the natural advertiser set.

What changes for marketers?

Retail media networks operate as a mid-funnel tactic that closes the loop between ad exposure and purchase more directly than most digital-only channels. A mall-backed network brings a different audience profile than the grocery-anchored and e-commerce-anchored offerings already live in the market.

Brand teams managing omnichannel budgets now have another channel to test. Fashion, beauty, and lifestyle advertisers should evaluate whether mall-based shopper data complements their existing retail media buys.

What remains unclear

The Sixteen:Nine report does not disclose specific capabilities, pricing, integration details, or the executive team behind the network. Practitioners watching the rollout need answers to several operational questions:

• Does the network offer closed-loop measurement tied to in-tenant purchase data?
• What buying interfaces does it expose — direct IO, programmatic DSP access, or both?
• How does shopper identity resolution work across digital and physical touchpoints?
• Does the network overlap with or complement existing partners such as The Trade Desk and Amazon Ads?

What to watch next

Simon has not yet released a network name, public rate card, or go-to-market partner list. Practical signals to monitor include:

• Official corporate communications from Simon
• Onboarding documentation for media buyers
• Pilot programs with anchor and inline tenants
• Presence at retail media and programmatic industry events

What this means for the broader martech stack

For DSPs, measurement vendors, and creative platforms, the launch adds another integration target on the retail media side of the supply stack. Adtech vendors that built dedicated retail media capabilities over the past two years will reassess competitive positioning as the property-based channel matures.

For brands, the launch signals that retail media is no longer confined to grocery carts and e-commerce carts. Mall traffic is now on the table. Teams that move first to test and measure the new inventory will set the terms under which the rest of the industry evaluates it.