A Zillow securities class action filed by Rosen Law Firm is now open to investors who bought shares of Zillow Group (NASDAQ: ZG, Z) between February 11, 2025 and May 7, 2026, with a lead plaintiff deadline of August 10, 2026. The suit alleges the company misled shareholders about the nature and legal risks of its deal with Redfin Corporation, which was already drawing federal antitrust fire before the class period closed.
| Detail | Facts |
|---|---|
| Tickers | ZG, Z (NASDAQ) |
| Class period | Feb. 11, 2025 – May 7, 2026 |
| Lead plaintiff deadline | August 10, 2026 |
| FTC lawsuit filed | September 30, 2025 |
| Motion to dismiss denied | May 6, 2026 |
| Reported deal value | $100 million (per Real Estate News) |
How the FTC Case Set the Stage
The investor lawsuit did not arise in a vacuum. On September 30, 2025, the FTC sued Zillow and Redfin in the U.S. District Court for the Eastern District of Virginia, case number 1:2025cv01638, alleging the two companies entered into an illegal agreement in February 2025 to dismantle Redfin as a competitor in the internet listing service advertising market for multifamily rental properties.
The deal at the center of that complaint: Zillow reportedly paid $100 million to become Redfin’s exclusive multifamily rental listings provider, according to Real Estate News. No primary filing independently confirmed that figure, but it frames why the FTC characterized the arrangement as eliminating a rival rather than forming a partnership.
Zillow pushed back in a May 20, 2026 court filing, arguing the deal benefited renters by expanding apartment listings on Redfin’s platform. The company also pointed to Redfin’s weakened financial position following its 2021 acquisition of RentPath, a company that had been through bankruptcy, as context for why the arrangement made commercial sense.
That argument did not get far with the court. On May 6, 2026, Judge Anthony Trenga denied Zillow and Redfin’s motion to dismiss, finding that the face of the complaint demonstrated “clearly anti-competitive conduct,” according to an analysis by Axinn, Veltrop and Harkrider. That ruling, one day before the class period ends, is central to what the securities plaintiffs are arguing: that the market did not fully understand the company’s legal exposure until then.
What the Zillow Securities Class Action Alleges
The Rosen suit makes four core claims. First, that Zillow described its Redfin arrangement as a “partnership” when, legally and functionally, it amounted to acquiring Redfin’s business in the relevant market. Second, that the deal created a materially heightened risk of antitrust liability that the company did not properly disclose. Third, that once the FTC actually filed suit in September 2025, Zillow continued to downplay its exposure. Fourth, that statements about Zillow’s business and prospects were therefore materially false or lacked a reasonable basis throughout the class period.
The Zillow securities class action is not the only legal front the company is managing. A separate putative class action, filed January 16, 2026 by Keller Rohrback (Case No. 3:26-cv-05049), alleges Zillow coerced real estate agents enrolled in its Preferred or Flex Agent programs into purchasing its “Follow Up Boss” contact management system and steering clients toward its mortgage lending services as conditions for receiving client referrals. That case targets Zillow’s agent-facing business model, not investor disclosures.
What Investors Need to Know Now
No class has been certified in the Rosen action. Until certification, investors are not represented by counsel unless they retain one independently. Participation in any future recovery does not require serving as lead plaintiff; absent class members remain eligible.
The August 10, 2026 deadline applies only to those who want to serve as lead plaintiff and direct the litigation. That role carries legal responsibilities, so investors weighing it should move quickly given that the deadline is roughly two months out.
The Zillow securities class action now runs alongside an active federal antitrust case that has already survived a dismissal attempt. The FTC v. Zillow Group docket in Virginia will be the next place to watch: any adverse ruling or settlement in that proceeding could materially shape what the securities plaintiffs can argue about what management knew and when.
