When the Feed Stops – Lessons from Zillow v. MRED and Compass

When the Feed Stops

Lessons from Zillow v. MRED and Compass

An Educational Overview for Industry Discussion. September 2026.

This piece is written for education and discussion. It is not legal advice, and it is not a legal analysis of any pending matter. It uses a recent court ruling as a teaching case about how MLS data governance actually works.

The Story in Plain Language

Zillow has a policy called the Listing Access Standards. Under that policy, Zillow refuses to display a listing if the listing was first marketed through certain private listing networks (PLN) before reaching the broader market. Midwest Real Estate Data, known as MRED, is the MLS serving the Chicago area. MRED told Zillow that if it wanted to keep receiving the MLS data feeds, it had to display listings under the same rules that apply to every other recipient of those feeds. Zillow refused. In May, MRED shut off the feeds. Thousands of Chicago area listings disappeared from Zillow overnight.

Zillow sued MRED and Compass in federal court. It claimed the two companies conspired to cut off its data in violation of antitrust law, and it pointed to their national expansion partnership as evidence. A judge temporarily ordered the feeds restored while the case was heard. In September 2026, after a two day hearing, Judge John Tharp ruled.¹

He denied Zillow the injunction it wanted. He dissolved the temporary order. And he sent Zillow’s claims against MRED out of federal court and into private arbitration, because the contract governing Zillow’s data access said that is where disputes must go. The claims against Compass were paused while arbitration proceeds.

The ruling was not a final decision on who is right. Zillow’s claims are still alive. But the practical effect is significant, and the lessons are worth studying.

The Vocabulary

A few terms make the rest of the story easy to follow.

• IDX and VOW feeds. These are the data feeds through which an MLS delivers the collective listing content of its Participants and Subscribers to websites and applications. IDX supports public listing display. VOW supports client portals that operate like a virtual office.
• Collective feed. The data feed carrying the aggregated listing content of all Participants in an MLS, compiled by the MLS and licensed on uniform terms. Its value is comprehensiveness. It stands in contrast to a direct feed, which carries only a single brokerage’s listings and operates outside MLS rules.
• Private listing networks. Channels where a listing is marketed to a limited audience before it reaches the broader market. Zillow’s Listing Access Standards penalize listings that start there.
• Preliminary injunction. A court order that freezes conduct while a case is decided. To get one, the party asking must make a strong showing that it is likely to win. Zillow could not.
• Private dispute resolution outside the court system. It is confidential, it produces no published precedent, and it exists only because the parties agreed to it in a contract.
• Data license agreement. The contract under which a portal, vendor, or brokerage receives MLS data. In this case, Zillow received MRED data through MLS Grid under such an agreement.
• The 2008 NAR/DOJ settlement. The resolution of a Department of Justice antitrust suit against NAR over its VOW policies. It guaranteed every MLS Participant access to VOW feeds on nondiscriminatory terms, regardless of business model, and limited VOW operation to actual Participants engaged in brokerage. The consent decree expired in 2018, but the policy structure it produced lives on in the NAR Handbook.

Where the Feeds Come From

IDX and VOW feeds do not exist in a vacuum. They sit at the bottom of a governance stack built over two decades, and understanding the stack is what makes the MRED case comprehensible.

Start at the top. The 2008 settlement between NAR and the Department of Justice required that every MLS Participant receive VOW feed access on nondiscriminatory terms, regardless of business model, and it limited VOW operation to actual Participants engaged in brokerage.² NAR policy in the Handbook defines the IDX and VOW categories and establishes that the entitlement runs to Participants. Not to portals as such. Not to media companies. Not to advertisers. To Participants. Zillow receives these feeds today because it became a Participant through its licensed brokerage entities, on the same basis as any brokerage.

But entitlement is not unconditional. It means an MLS cannot deny access arbitrarily or discriminatorily. It does not mean access free of rules. Entitlement gets a recipient to the signing table. The license agreement defines what the recipient may actually do with the data. MLS rules define compliant conduct. Enforcement, up to and including feed termination, is the consequence of breach.

Uniform enforcement of those terms is not discrimination. It is the opposite of discrimination. That is why the nondiscrimination guarantee born in 2008 offered Zillow no shelter in Chicago. The settlement answers who gets access. The contract and the rules answer on what terms. Enforcement answers what happens when the terms are broken. The MRED ruling lives entirely in those last two layers.

The stack also explains why direct feeds are different in kind, not just in degree. A direct brokerage feed exists entirely outside the stack. No NAR policy entitlement, no MLS license, no MLS rules. It trades comprehensiveness for freedom from governance.

Why the Court Ruled as It Did

Three findings carried the decision, and each one teaches something.

Shared interests are not a conspiracy

Zillow showed that MRED and Compass communicated often, had chances to coordinate, and both opposed the Listing Access Standards. The judge found that this was not enough. Antitrust law requires proof of an actual agreement. Two organizations pursuing the same goal for their own independent reasons is not a conspiracy, even when their actions line up. The lesson: alignment is not agreement, and the law knows the difference.

Harm to a competitor is not harm to competition

Zillow argued the feed cutoff was an automatically illegal group boycott. The judge disagreed and applied the fuller test, which asks whether competition itself was damaged. Zillow could not define the market, could not show market power, and most importantly could not show that anyone other than Zillow was harmed. This distinction, harm to competition versus harm to a competitor, decides nearly every fight between portals and MLSs. It is worth committing to memory.

The contract decided where the fight happens

The MLS Grid agreement contains a mandatory arbitration clause. Any dispute arising out of or relating to the agreement must go to private arbitration. The judge enforced it. Years of public federal litigation, with open discovery and press coverage of every filing, became a confidential proceeding instead. A sentence in a contract, signed long before anyone imagined this dispute, determined the entire forum.

The Lessons for Industry Discussion

Lesson one: uniform rules are enforceable rules

MRED did not single Zillow out. It applied the same data use and display rules that bind every recipient of the collective feed, and it followed through when the largest portal in the country refused to comply. A federal court declined to stop it. The principle left standing is simple. A recipient takes the collective feed on the same terms as everyone else, or not at all. Enforcement that is uniform, documented, and grounded in written rules is defensible. Enforcement that is selective or improvised is not.

Lesson two: governance lives in the contracts

The most consequential holding in the case was not about antitrust at all. It was about a data license agreement. The forum for a future dispute is decided the day the contract is signed, not the day the dispute erupts. Every feed license, vendor agreement, IDX and VOW authorization, and API access term is a governance document. The organizations that treat this paperwork as routine will discover its importance at the worst possible moment. The organizations that draft it with care will find, as MRED did, that the contract does the heavy lifting when the crisis arrives.

Lesson three: the national MLS question is now open

With the litigation restrictions dissolved, MRED’s national expansion proceeds. Compass has agreed to make nationwide inventory available through MRED and to subsidize MRED participation for as many as one hundred thousand of its agents. A well capitalized brokerage underwriting a single MLS’s national footprint challenges the geographic MLS model that has organized this industry for a century. Every regional MLS should be discussing what that means for its market, its Participants and Subscribers, and its future.

Lesson four: watch the direct feed movement

Zillow’s hedge against feed cutoffs is its BeOnZillow program, which invites brokerages to send listings directly to the portal rather than relying on an MLS feed. Every demonstration that an MLS can lawfully sever a feed strengthens the portal’s incentive to route around MLS feeds entirely. The stronger the MLS’s leverage over the collective feed becomes, the harder portals will work to make the collective feed optional. This tension between enforcement power and disintermediation pressure deserves a place in every MLS strategic planning conversation.

Lesson five: read past the press releases

Both sides declared victory. Compass said the ruling vindicated homeowner choice. Zillow said the fight is not over. Neither statement is quite what the court held. The judge did not rule that Zillow’s policies are anticompetitive, and he did not rule that MRED and Compass did nothing wrong. He ruled that Zillow had not made a strong enough showing to freeze the status quo, and that the contract sends the dispute to arbitration. Reading rulings for what they actually decide, rather than for what the parties claim they decide, is a discipline this industry needs.

The Closing Thought

Strip away the press releases, the social media campaigns, and the antitrust vocabulary, and this case reduces to something familiar. Who has the data. Who granted access to it. On what terms. And what happens when the terms are broken. The dispute was not decided by antitrust doctrine. It was decided by rules and contracts written years in advance. Under all is the data, and under the data is the paperwork that governs it.

Notes

¹ Zillow, Inc. v. Midwest Real Estate Data LLC and Compass, Inc., U.S. District Court for the Northern District of Illinois, ruling of Judge John Tharp on preliminary injunction and motion to compel arbitration, September 2026, as reported by Inman News.

² United States v. National Association of REALTORS®, U.S. District Court for the Northern District of Illinois, Case No. 05-C-5140, final judgment entered November 18, 2008. The ten year consent decree expired in November 2018. The VOW policy it produced remains in the NAR Handbook on Multiple Listing Policy.