ZG · CIK 1617640
What Zillow Group, Inc. told the SEC could break it.
Zillow's traffic and results rest on access to MLS listings data, and that access is conditional: if its MLS members are deemed noncompliant with an MLS's rules — a risk it flags as growing with its push into AI-powered experiences — an MLS could fine, restrict, suspend or terminate its data access, and any loss or degradation of that data would severely hurt its sites and apps. It is also entangled in litigation, named in 2025 complaints from the FTC, certain state attorneys general, Compass, CoStar and consumer plaintiffs alleging antitrust, intellectual-property, consumer-protection and RESPA claims, amid broader industry antitrust scrutiny. Its Zillow Home Loans arm adds a third exposure — interest-rate volatility plus GSE policy risk, where proposals to wind down or privatize Fannie Mae and Freddie Mac could affect its mortgage operations.
3 self-disclosed vulnerabilities, pulled from its own filings, each in the company’s words, with the source. This is the risk register almost nobody reads.
In its own words
What could break it.
Other disclosures
- dependence on MLS listings data (access can be restricted/terminated for non-compliance)high
Zillow depends on MLS listings data; if its MLS Members are deemed noncompliant with MLS rules (a risk that may grow as it launches AI-powered experiences), an MLS could fine, restrict, suspend or terminate Zillow's access to that data — degradation of which would severely harm site traffic and results.
“If any of the MLS Members are deemed to be noncompliant with an MLS's rules or to have provided improper responses to or resolution of complaints, they may face disciplinary sanctions by that MLS, which could include monetary fines, restricting, suspending or terminating our access to that MLS's data, or other disciplinary measures. The loss or degradation of this listings data could materially and adversely affect traffic to our mobile apps and websites.”
SEC filing →As of 2026
Litigation
- antitrust/IP/consumer-protection complaints (FTC, state AGs, Compass, CoStar)medium
During 2025 Zillow was named in complaints by the Federal Trade Commission, certain state attorneys general, Compass, Inc., CoStar Group, Inc. and consumer plaintiffs alleging antitrust, intellectual-property, consumer-protection, RESPA and other claims — alongside broader real-estate industry antitrust scrutiny following the NAR class action and DOJ investigation.
“For example, during 2025, among other claims, we were named in complaints filed by the Federal Trade Commission, certain state attorneys general, Compass, Inc., CoStar Group, Inc., and consumer plaintiffs in a purported class action, alleging antitrust, intellectual property, consumer protection, RESPA, and other claims.”
SEC filing →As of 2026
Regulatory & policy
- mortgage-operations interest-rate/GSE risk (Fannie Mae/Freddie Mac reform, RESPA/fair-lending)medium
Zillow Home Loans is exposed to interest-rate volatility and to GSE policy — proposals to wind down/privatize Fannie Mae and Freddie Mac (and leadership/regulatory changes there) could adversely affect its mortgage operations — plus fair-lending, RESPA, FCRA/GLBA and HMDA compliance obligations.
“A number of legislative proposals have been introduced in recent years that would wind down or phase out the GSEs, including proposals to end the conservatorship and privatize Fannie Mae and Freddie Mac... Any changes in laws and regulations affecting the relationship between Fannie Mae and Freddie Mac and their regulators or the United States federal government... could adversely affect our mortgage operations and prospects.”
SEC filing →As of 2026
The hidden graph
Who it depends on, and who depends on it.
Relationships surfaced from filings, including ones disclosed by the other side, which is how the non-obvious ones come to light.
Its suppliers
Realtor.com (Move, Inc. / News Corp)
“We continue to focus our attention and efforts to build a comprehensive marketplace for consumers, and expand access to listings through syndication agreements with Redfin and Realtor.com.”
Cited →“Total gross margin decreased from 76% to 74% primarily due to increased lead acquisition costs associated with our Redfin rentals syndication agreement.”
Cited →
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