Zillow, Compass and Midwest Real Estate Data (MRED) spent the first half of July trading post-hearing briefs in Zillow’s antitrust case, and the language tells you how far apart they are. In a 48-page filing, Zillow argued that MRED and Compass moved “in lockstep” to block its Listing Access Standards, and accused Compass of having “laundered its failed private exclusive listings through MRED” to trigger a rules violation and justify cutting Zillow’s feed. Zillow pointed to an October 2025 email in which Compass CEO Robert Reffkin urged multiple MLSs to “discipline” Zillow by terminating its feed access if the standards were not “immediately repealed.” “If Zillow wants MRED’s feed, the ‘lifeblood’ of its business that it receives virtually for free, all Zillow has to do is not subjectively ban listings,” they wrote. Reffkin testified that Zillow used “carrots and sticks,” offering financial incentives if Compass stopped marketing listings off the portal.