Partners Group Sues Short-Seller Grizzly Research as Residential Real Estate Push Comes into Focus

Swiss private-markets giant sues short-seller over Wirecard comparison, while completing Empira acquisition and reporting $184.9B in AUM. Stock down 17% year-to-date.

The Swiss private-markets giant has taken the gloves off. Partners Group announced it is suing US short-seller Grizzly Research after a May report compared the firm to Wirecard, calling its valuation practices into question. Management has branded the allegations “frivolous, defamatory, and highly misleading.” Yet even as the legal battle unfolds, the firm is quietly reinforcing its European residential real estate footprint—a strategic pivot that could redefine its portfolio mix.

At the heart of that pivot is the completed acquisition of Empira AG, a vertically integrated real estate investment manager focused on the DACH region. The deal closed on January 7, 2025, bringing $4 billion in fee-paying assets under management and bolstering Partners Group’s exposure to European rental housing and green assets. Henrik Orrbeck and Lahcen Knapp, writing in real estate publication PERE, argue that European residential markets now present wide performance dispersion driven by diverging regulations, affordability constraints, and supply shortages. Success, they say, demands selective market picking and deep operational involvement—not a one-size-fits-all approach.

The broader asset gathering machine is humming. At year-end 2025, Partners Group reported $184.9 billion in assets under management, up from $152 billion the prior year. During 2025, it invested $27 billion and realized $26 billion. The firm is guiding for gross new client demand of $26–$32 billion in 2026. As of June 30, 2025, AUM stood at $174 billion, showing steady growth even before the final quarter’s inflows.

The Grizzly Research attack landed in late May. The short seller questioned Partners Group’s asset valuation, specifically targeting a holding called Zenith Longitude Limited, which it claimed had no real business. Partners Group retorted that the entity is simply the holding company for Apex Logistics, a majority-owned logistics business. Grizzly also accused the firm of understating its software exposure; Partners Group countered that its software stake represents 9.9% of its private credit platform, below the industry average.

The reputational damage has already led to internal adjustments. Partners Group acknowledged that under normal conditions five to ten percent of its portfolio companies—which total over 150—can be expected to face operational difficulties. Moving forward, management says it will be more cautious about investing in “socially exposed” areas, a direct response to the Grizzly episode.

Investors remain wary. The shares last traded at €902.60, down 17.3% since the start of the year and just 3.7% above the 52-week low of €870.80. The stock has recovered some ground after the dividend payment and the lawsuit announcement, but it still sits roughly 25% below its 52-week peak of €1,213.50.

Two key dates loom. On July 15, 2026, Partners Group will release its assets under management as of June 30, 2026—a reading that will signal whether the growth trajectory has held. The full half-year report follows on September 1, when investors will scrutinize whether the new investment guardrails are yielding results and whether the fundamentals can finally put the short-seller accusations to rest.