The Chicago Courtroom That Will Decide What You Get to See

A trial about listing data, told from the only seat that should matter, the buyer's and the seller's

There is a room in the Dirksen Federal Courthouse in Chicago where, over two days in early July, some of the most powerful people in American real estate raised their right hands and took turns telling a judge a story. Zillow told one version. Compass told another. Midwest Real Estate Data, the multiple listing service that quietly powers home search across Chicagoland, told a third. The three stories do not agree, and Judge John Tharp now has to decide which pieces of them are true.

Most of the coverage has framed this as a corporate brawl, a fight over data feeds, antitrust theories, and market share. All of that is real. But strip away the executive titles and the billion-dollar balance sheets, and there is a simpler question sitting underneath the whole case, the only question that should matter to the roughly six million American households that will buy or sell a home this year:

When you go looking for a home, are you seeing everything that is actually for sale? And when you sell your home, is your agent getting it in front of everyone who might pay top dollar for it?

That is the plot. Everyone in that courtroom is a supporting character. Let me lay out what each side is really arguing, what the evidence showed, and where the spin gets thick, because there is plenty of spin, and some of it is coming from the party that paid for a journalist's plane ticket.

How we got here

The fight traces back to a policy Zillow rolled out in the spring of 2025 called Listing Access Standards. The rule is simple to state. If a home is publicly marketed to some buyers, it must be made available to all buyers, entered into the MLS and shown on IDX feeds within one business day, or Zillow will ban it from its platform, permanently.

This was aimed squarely at a growing practice: private listing networks, sometimes called pocket listings or office exclusives. These let an agent market a home quietly, inside their own brokerage or a select circle, without ever putting it on the open MLS where every agent and every portal can see it. Compass, the largest brokerage in the country, has built this into a formal strategy. It pitches sellers on a three-phase marketing plan that starts a home as a "private exclusive" before it ever hits the public market.

In April 2026, Compass and MRED announced an expanded partnership. Compass would syndicate its national inventory, including private listings, into MRED's Private Listing Network, a channel that has existed since 2016 and shares homes among MLS subscribers without pushing them to public portals like Zillow. Weeks later, on May 12, Zillow sued both MRED and Compass, alleging they had conspired to weaponize the MLS's rules to choke off Zillow's access to Chicagoland listings and kneecap a new Zillow product. In May, MRED actually cut Zillow's feed for two days before a judge ordered it restored. The July hearing was about whether that restraining order should hold while the larger antitrust case grinds toward trial.

Now, the two stories.

Zillow's story: the lights are being turned off

Zillow's central claim is that it is fighting for transparency, and that private listing networks quietly rob both buyers and sellers.

Errol Samuelson, Zillow's chief industry development officer, put the company's self-image plainly on the stand. <cite index="6-1">"Our brand promise is to show everything on the market. We turn on the lights. If we can't show everything for sale, we lose brand trust."</cite> He argued that the real problem with Compass's private model is that it routes buyers exclusively through Compass agents, <cite index="6-1">enabling the brokerage to potentially double-end commissions and use off-market inventory as a recruiting tool.</cite>

That "double-end" point is the heart of the seller-harm argument, and it deserves a plain-English translation. If your listing agent keeps your home inside their own brokerage's private network, then the buyer who eventually shows up is more likely to also be represented by that same brokerage. The brokerage collects both sides of the commission. That is good for the brokerage. Whether it is good for you, the seller, depends entirely on whether a smaller, private pool of buyers produces as high a price as the full open market would.

Zillow says it does not, and it brought numbers. The company's own research claims that <cite index="13-1">home sellers who kept their listings off the MLS left more than $1 billion on the table across 2023 and 2024.</cite> It says <cite index="13-1">a home sold off the MLS in California typically yielded about $30,000 less than a comparable home listed publicly, and in New York the gap was nearly $14,000.</cite> Other industry research points the same direction. A separate analysis found <cite index="18-1">MLS-listed homes sold for meaningfully more than off-MLS listings, on the order of tens of thousands of dollars for a typical seller,</cite> and Bright MLS data suggests <cite index="14-1">most homes that start as office exclusives do not actually sell that way, with only about 13% selling in that status while the majority eventually move to the open MLS anyway.</cite>

The logic is intuitive. Listings with maximum exposure attract maximum competition, and competition is what pushes a price up. Take the auction to a back room and you may get a worse result.

On the buyer side, Zillow leans on a striking figure. <cite index="11-1">Its research found that 91% of buyers believe they should be able to see all listings, and see them for free.</cite> A private network, in this telling, builds a wall around inventory. <cite index="11-1">The only way a buyer can get behind that wall is to agree to work with an agent from a particular brokerage, which limits their choice of agent and raises the risk of dual agency, where one agent, or one brokerage, represents both sides.</cite>

And dual agency is where the whole scheme quietly turns against the consumer, so it is worth slowing down on. A listing agent's fiduciary job for a seller is to drive the price as high as it will go. A buyer's agent's job is the exact opposite, to drive it as low as it will go. Those two duties cannot both be discharged by the same agent, or the same brokerage collecting both sides, because they point in opposite directions. Something has to give, and what gives is a duty owed to a consumer. In practice the agent stops being an advocate and becomes a referee of a negotiation they are financially invested in closing quickly, at whatever price books both commissions. The seller may leave money on the table. The buyer may overpay. Frequently the party with the weaker relationship to the agent absorbs the worse end. Either way, the loser is the consumer of real estate services, and the winner is the house holding both sides of the check. A private listing network is not incidental to that outcome. It is the funnel that manufactures it, by engineering the conditions where the buyer who shows up is far more likely to be represented in-house.

Then there is the argument that carries the most moral weight, and the most caution. Fair housing. <cite index="11-1">The National Fair Housing Alliance, the National Association of Real Estate Brokers, and the Consumer Federation of America have all raised concerns that pocket listings can quietly perpetuate steering and discrimination.</cite> The reasoning: when a home is only shown to a hand-picked network rather than the whole market, it becomes far easier, whether by design or by habit, for certain buyers to never learn the home exists. <cite index="11-1">Fair Housing Alliance CEO Lisa Rice has argued that hiding listings in private channels obscures vital information and can eliminate housing access for people from marginalized communities.</cite>

That is a serious charge, and it is worth being honest about its limits, which I will come back to.

Finally, Zillow argues the harm to the open market is irreversible. Its economic expert warned the court that <cite index="8-1">if private listing networks are allowed to proliferate unchecked, the resulting fragmentation would harm consumers and could never be fully unwound.</cite> Another Zillow expert testified that <cite index="8-1">if the feed cut stands, consumers would lose confidence that Zillow shows the full market, listings would follow the audience, and the open MLS system would splinter in ways that hurt buyers, sellers, and agents alike.</cite> Zillow's CFO, Jeremy Hofmann, described losing MRED's feed as sending the company into <cite index="2-1">a "downward spiral" of fewer listings, fewer consumers, fewer agents, and lost revenue.</cite>

That last quote is a useful hinge, because it points to the thing Zillow would rather you not dwell on.

Calling a spade a spade on Zillow

Zillow is not a neutral party wandering into this fight on behalf of the public. It is a business whose entire model depends on having the most complete pile of listings so that it can sell the resulting audience's attention back to agents as leads. Samuelson himself testified that <cite index="7-1">new listings are "the lifeblood" of Zillow's platform,</cite> and Zillow's own exhibits showed that a brand-new listing pulls <cite index="7-1">nearly 180 page views on day one, collapsing to about 60 by day five.</cite> When Zillow says every buyer deserves to see every listing on day zero, it is describing both a consumer good and its own revenue engine. Those two things happen to align here, but they are not the same thing, and the alignment is convenient enough that it should not be taken purely on faith.

There is also a genuine hypocrisy charge that Compass landed cleanly. Zillow has been building its own pre-market product, Zillow Preview, and Compass and MRED pointed out that <cite index="9-1">Zillow adjusted its own listing standards around the launch of that product.</cite> In other words, the company preaching that no listing should ever be shown to some buyers before all buyers was quietly carving out room for a premarket offering of its own. A Compass spokesperson put the sharpest version of the counterattack this way: Zillow, they said, <cite index="5-1">is banning active, publicly available MLS listings from its platform and then deceiving consumers by labeling those very homes as not for sale.</cite> If that characterization holds up, then the company claiming to "turn on the lights" is, in at least some cases, switching them off and mislabeling the room.

And the fair housing argument, powerful as it is, cuts in a direction Zillow rarely mentions. MRED's CEO testified that the private network was defended in part as a tool for <cite index="1-1">sellers facing sensitive personal circumstances, giving them flexibility during difficult times.</cite> A domestic violence survivor, a family mid-divorce, a public figure with security concerns, these are real people with real reasons to not broadcast their address to a billion monthly visitors. Fair housing is an argument for openness in general and an argument for privacy in specific cases, and honest people can hold both.

Compass and MRED's story: a neutral rule and a bully

The defense tells a completely different story, and it starts by refusing Zillow's framing entirely. This, they say, is not an antitrust conspiracy. <cite index="1-1">An MRED spokesperson called it "just a breach of contract case, not an antitrust conspiracy,"</cite> and argued the MLS was <cite index="1-1">enforcing a neutral rule designed to maintain data integrity between brokerages and preserve the viability of MLSs.</cite>

Their factual defense rests on history. MRED's witnesses testified that the rule at the center of the case, an "objective criteria" standard for IDX display, is not something they invented in 2025 to trap Zillow. <cite index="1-1">They traced it to the 2008 settlement between the Department of Justice and the National Association of Realtors, which barred MLSs from selectively hiding listings from consumer-facing web portals.</cite> MRED's technology chief, Chris Haran, told the court the October 2025 notice everyone is fighting about was not a new rule at all. <cite index="7-1">"We believed that the original rule already said that. We were asked for a clarification, and we added that clarification,"</cite> he testified. In their telling, Zillow is the one weaponizing data, and MRED is simply refereeing.

Compass's argument is about freedom to run its own business. It says Zillow <cite index="9-1">free-rides on listings it did not create, wants to police marketing strategies it happens to dislike, and manufactured its own harm.</cite> A Compass spokesperson framed the consumer stakes as the mirror image of Zillow's: <cite index="6-1">"Zillow's ban hurts consumers and merely serves to entrench Zillow's dominance and block consumer choice. Buyers on Zillow are not told that listings are being filtered."</cite>

And then there is the seller-choice argument, which is the strongest thing the defense has going for it. <cite index="6-1">MRED's Private Listing Network, its people argue, exists to give sellers control, privacy, and flexibility, and has operated for a decade without complaint.</cite> Not every seller wants the full floodlight. Some genuinely want to test a price quietly, or protect their privacy, and current rules already permit that. It is worth noting that agents themselves are split rather than uniformly opposed. A Zillow-commissioned survey, of all things, found that <cite index="19-1">61% of agents said private networks benefit buyers and 64% said they benefit sellers.</cite> Zillow's CEO waved that away as agents being <cite index="20-1">"misinformed by the talking points of some large brokerages,"</cite> which is a convenient way to dismiss the inconvenient opinion of the very professionals who work these transactions every day.

The most dramatic testimony from the defense was not about data at all. It was about pressure. <cite index="4-1">Both Reffkin and Jensen testified that Zillow executives personally threatened them.</cite> Reffkin said a Zillow figure warned him that <cite index="4-1">"Zillow has carrots, and they have sticks" if he did not stop marketing outside of Zillow,</cite> and that CFO Jeremy Hofmann told him directly, <cite index="4-1">"we will not allow you to market listings outside of Zillow."</cite> Jensen's account was more vivid still. She testified that when she refused a request to delay MRED's private listings on Zillow, Samuelson told her she was <cite index="1-1">leaving "no choice for Zillow than to litigate," and that she should expect her "phone to be dumped," her text messages to "get out," and to face "a public spectacle."</cite>

If a jury believes that, it is not a flattering picture of the company claiming to be the consumer's champion.

Calling a spade a spade on Compass and MRED

Except the cross-examination went badly for the defense, and honesty requires saying so.

Zillow's lawyers spent much of the second day dismantling the "we acted independently" narrative with the defendants' own words. Jensen had testified that MRED made its decisions on its own. Then Zillow confronted her with her <cite index="4-1">own deposition testimony, in which she admitted she had told Reffkin that MRED would revoke Zillow's data feed if Zillow implemented its Listing Access Standards in Chicago.</cite> That is coordination, in her own mouth, and it cut hard against the picture of a neutral referee applying a longstanding rule.

It got worse. Reffkin testified he <cite index="8-1">rarely communicated with Jensen and could not recall sharing litigation documents with her.</cite> Zillow then produced a <cite index="8-1">November 2025 text in which Reffkin sent Jensen a Zillow court document marked "highly confidential" and "outside counsel's eyes only," followed by Jensen asking whether she could forward it to the Illinois attorney general and to reporters.</cite> He also <cite index="8-1">acknowledged on cross that he had reviewed and suggested edits to a joint MRED-Compass press release he had earlier claimed he had no ability to change.</cite> Jensen, for her part, was pressed on an April 2026 email in which she <cite index="4-1">added language committing MRED to "protect and safeguard agents" from being banned by "third-party portals," language she said she did not recall drafting but confirmed she had sent.</cite>

A brokerage and an MLS coordinating media strategy, editing each other's press releases, and passing around confidential litigation documents does not, on its face, look like a neutral utility enforcing a decade-old rule by coincidence. It looks like two parties with a shared interest working in concert. Whether that rises to the legal standard of an illegal group boycott is for the court. But the "we barely spoke and just followed the rulebook" story took real damage.

There is one more uncomfortable number for the defense. Zillow pointed out that <cite index="8-1">99% of listings banned under its standards were Compass listings, even though Compass represents only about 5% of national listings.</cite> The defense reads that as proof Zillow's rule was rigged to target Compass. But it can just as easily be read the other way: Compass is, by Zillow's account, <cite index="8-1">the only brokerage systematically running private listings at scale,</cite> which is why it keeps tripping the wire. Both readings are alive. Neither should be swallowed whole.

So who is actually right about buyers and sellers?

Here is the honest answer, and it is not the tidy one either side wants.

On sellers, the weight of the evidence genuinely favors exposure. The studies are not all from disinterested parties, and Zillow's are self-serving, but the finding that broad exposure tends to produce higher prices shows up across multiple sources, including research Zillow did not fund, and it matches basic economic intuition about competition. If you are a typical seller with a typical home, the burden of proof sits on anyone telling you that a smaller audience will get you more money. That claim is usually true only in narrow cases, luxury, privacy, genuine sensitivity, and the current rules already carve out room for those.

But, and this is where Zillow overreaches, "usually better" is not "always better," and the existence of legitimate private-listing use cases is not a marketing fiction. The genuinely dangerous scenario is not the domestic-violence survivor who wants discretion. It is the seller who is steered into a private network they do not fully understand, told it is a savvy strategy, when the real beneficiary is a brokerage angling to keep both commissions in-house. The thing to watch is not privacy. It is disclosure. Does the seller actually understand the tradeoff they are agreeing to?

And notice how the seller harm and the buyer harm are not two separate problems. They are the same problem viewed from opposite ends of the same transaction. The mechanism connecting them is dual agency. Because one agent, or one brokerage, cannot simultaneously fight to raise the price for the seller and lower it for the buyer, keeping a deal in-house guarantees that at least one consumer, and often both, is no longer being fully represented by anyone. The seller who could have fetched more and the buyer who could have paid less are not competing casualties in this story. They can be created by the very same closing. That is the quiet cost that never shows up in a brokerage's pitch about "control" and "flexibility," and it is the strongest reason to be suspicious of any arrangement that narrows the buyer pool down to the listing brokerage's own clients.

On buyers, the transparency argument is strong on its own terms and weakest exactly where Zillow is loudest. A buyer is unambiguously better off when they can see everything in one place. But Zillow is not a neutral window onto "everything." It is a business that also filters listings, is building its own premarket product, and, per Compass, has labeled some genuinely-for-sale homes as not for sale. A world where all listings flow only through one dominant portal is not obviously safer for buyers than a world with private networks. It is a different concentration of power, and consumer advocates have been clear that <cite index="15-1">none of the corporate players here, not the brokerages, not the portals, not the MLSs, are motivated primarily by consumer welfare.</cite> As one consumer-focused writer put it bluntly, everyone is fighting for their own slice of power, and <cite index="15-1">consumers are being used as the marketing angle.</cite>

That is the sentence to tape to your monitor before you read anyone's press release, including Zillow's, and including this article.

What actually happens next, and what it means for you

The immediate decision in front of Judge Tharp is narrow. He will rule, after post-hearing briefs, on whether Zillow keeps its Chicagoland feed while the antitrust case proceeds. <cite index="9-1">A grant protects Zillow's access; a denial lets the feed suspension stand and hands MRED significant leverage heading toward trial.</cite> There is also a live question of whether <cite index="9-1">the whole dispute gets pulled out of open court and into private arbitration, where much of this could be relitigated behind closed doors.</cite>

The bigger stakes are national. <cite index="9-1">MLSs, brokerages, and portals across the country are watching to see what a ruling here means for private listing networks, and several MLSs have reportedly held back from launching their own or partnering with brokerages while they wait.</cite> Whatever Tharp decides will ripple far past Chicago.

For a buyer or seller, the practical takeaways do not require waiting for the verdict. If you are selling, ask your agent directly whether your home will go on the open MLS and syndicate everywhere, or sit in a private channel first, and ask them to explain, in dollars, why the second option would ever beat the first for your specific situation. Be skeptical of "test the waters" pitches that quietly keep both commissions in one house. If you are buying, understand that no single site shows you literally everything, that <cite index="17-1">you should be wary of anyone who tries to sign you to a contract by dangling access to secret off-market inventory,</cite> and that the widest net is still cast by working an agent who pulls directly from the MLS rather than from any one portal's filtered version of it.

The executives in that Chicago courtroom will be fine either way. They have lawyers, PR teams, and, in at least one instance, a budget for flying journalists to the hearing. The people with the most actually at stake are the ones who were not in the room: the family trying to see every home they could afford, and the couple trying to sell the one they own for every dollar it is worth. The case is nominally about data feeds. It is really about whether those two people get a fair look at each other. Keep your eye on them, not on the podium.