Compass and Zillow CEOs Clash Over Alleged MLS Listing Data Restrictions
COMP•Compass and Zillow CEOs testified on July 2 in Chicago federal court, accusing the MLS of anticompetitive restrictions on listing data sharing. Compass CEO Robert Reffkin argued MLS policies inflate broker commissions and limit market access, while Zillow’s Rich Barton decried barriers to innovation.
1. Antitrust Lawsuit Filed Against Chicago MLS
Compass and Zillow jointly filed suit in late 2025 alleging the Chicago MLS imposed restrictive rules that prevent brokers from sharing online listing data, stifling competition and inflating commission rates. Plaintiffs seek injunctive relief to force more open data access and damages for alleged market harm.
2. Fiery CEO Testimonies in Court
On July 2, Compass CEO Robert Reffkin accused MLS leadership of protecting legacy brokerages at the expense of consumers, delivering a pointed critique of data-sharing fees. Zillow CEO Rich Barton followed, condemning the MLS’s policies as outdated barriers that hinder technological innovation in real estate services.
3. Implications for Data Access and Commissions
A ruling favoring Compass and Zillow could mandate MLS platforms nationwide to broaden listing data distribution, potentially lowering commission structures and expanding broker competition. Investors will watch whether the case prompts regulatory changes that reshape Compass’s market dynamics and revenue model.
