CoStar Group said Wednesday that D.E. Shaw appears to be attempting to undermine Homes.com in a way that would advantage the hedge fund's larger investments in competing residential platforms. In a letter and follow-up public statements, CoStar highlighted that D.E. Shaw’s latest public filing shows a 0.22% ownership position in CoStar while the firm holds roughly four times that value in direct competitors.
The dispute intensified after D.E. Shaw released an open letter that alleged CoStar was obscuring the financial performance of Homes.com. The hedge fund specifically took issue with a reporting change that combines Homes.com results with those of Apartments.com, a move Shaw said reduces transparency into the residential business.
CoStar pushed back on those assertions and questioned D.E. Shaw’s motivations. The company stated that D.E. Shaw has not disclosed its economic exposure to CoStar Group or whether it is net long the company. CoStar pointed to public 13F filings showing that D.E. Shaw holds material positions in Zillow, Opendoor Technologies, Anywhere Real Estate and Rocket Companies, and argued those firms could gain if CoStar scaled back or retreated from its residential strategy.
The immediate cause of the confrontation is CoStar’s decision to discontinue separate disclosure of "net new bookings" for Homes.com, a metric that D.E. Shaw described as essential for monitoring the unit’s progress. In its letter, D.E. Shaw suggested that the reduced visibility around Homes.com contributed to a 9% decline in CoStar’s share price last month, which the letter characterized as wiping out nearly $2 billion in shareholder value.
CoStar defended the restructured reporting, asserting that Homes.com has never been presented as a standalone segment and that grouping it with Apartments.com better reflects how the company operates the business. The firm also signaled a tougher posture by retaining Clare Locke LLP, a boutique law firm known for handling high-profile defamation and reputation matters.
Relations between CoStar and activist investors have been strained for more than a year. Last year both D.E. Shaw and Third Point pressured CoStar into support agreements that included board appointments and creation of a special committee to review spending. Those standstill provisions expired in January for Third Point and in February for D.E. Shaw, after which the activists escalated their public campaigning to press CoStar to further reduce or divest its residential operations.
An investor presentation provided by a source familiar with the matter was cited by CoStar to highlight patterns the company sees in D.E. Shaw’s activist campaigns. The presentation purported to show that companies tend to see weaker relative stock performance in the year after D.E. Shaw exits a position, with 1-year performance relative to the Russell 3000 lagging by a mean of -11.8%. The same material indicated that longer-term returns can improve post-exit, with a mean relative total shareholder return advantage of 66.8% by the five-year mark. The slide deck reportedly also shows that D.E. Shaw’s composite fund underperformed the Russell 3000 in seven of the last ten years.
CoStar said the combination of those data points and D.E. Shaw’s holdings in competing platforms raises concerns that Shaw’s public campaign seeks to shift value away from CoStar’s residential strategy and toward assets where Shaw carries greater exposure. D.E. Shaw has not responded to requests for comment about those conflict of interest allegations or about its broader economic exposure.
The debate has coincided with a notable slide in CoStar’s share price, which the company said is trading near seven-year lows. D.E. Shaw has framed that weakness as evidence that management’s residential approach is failing. CoStar rebutted that characterization by describing Homes.com as the company’s "fastest growing residential platform" and as an integral component of its long-term digital ecosystem.
With both sides preparing for continued shareholder engagement, the disagreement looks set to remain public and potentially intensify. CoStar’s hiring of outside counsel and its pointed comments about D.E. Shaw’s positions suggest the company will pursue multiple avenues to defend its strategy, while activists have underscored the need for greater disclosure and governance changes.
Context for investors
Investors watching this dispute are being presented with competing narratives: one arguing that reduced disclosure obscures performance at a potentially important growth asset, the other framing activist moves as driven by interests in rival platforms rather than by a pure concern for shareholder value. The outcome of the debate could influence perceptions of CoStar’s commitment to its residential business and the credibility of activist demands.