Sportradar Class Action Grows as Shareholders Demand Answers
Short seller reports tend to rile up the investor mob
A securities fraud class action targeting Sportradar Group AG is approaching a critical deadline, with multiple law firms circling a case that accuses the company of quietly building its business on unlicensed gambling operators while marketing itself as the industry’s watchdog.
Investors filed the lawsuit in the U.S. District Court for the Southern District of New York, and it seeks to represent investors who bought Sportradar Class A ordinary shares between November 7, 2024 and April 21, 2026.
Lead plaintiff James Anthony Smale filed the case on May 18, naming the Swiss sports data giant that supplies odds, stats, and integrity monitoring to leagues and sportsbooks globally, as well as its CEO Carsten Koerl and CFO Craig Felenstein as defendants. Investors have until July 17, 2026 to petition the court for lead plaintiff status.
Sudden Price Drop Accompanied Release of Short Seller Reports
The case centers on April 22, 2026, when Sportradar shares collapsed 22.6% to $13.04 from $16.84, wiping out approximately $800 million in market value in a single session. The near-simultaneous release of two scathing investigation reports from short-selling research outfits Muddy Waters Research and Callisto Research triggered the rout, and both firms disclosed short positions in the stock.
Muddy Waters, which says its work drew from a six-month investigation, an undercover sting at a gaming industry conference, analysis of the website code of dozens of gambling platforms, and interviews with 15 current and former Sportradar employees, concluded that the company knowingly built relationships with illegal operators as a core part of its strategy.
The firm estimated that black and gray-market operators account for between 20% and 40% of Sportradar’s total revenue, and it identified almost 50 current or former clients operating in illegal markets.
Undercover investigators posed as a startup sportsbook trying to access bettors in Vietnam, China, Thailand, and Indonesia, where online gambling is illegal. They say Sportradar sales staff offered to introduce them to one of China’s largest illegal gambling operators.
Callisto Research took a different research path, examining hundreds of gambling platforms and finding that over 270 of them, which is more than a third of the roughly 800 clients Sportradar claims to service, were either using its products or claiming to do so while operating illegally in regulated or prohibited markets.
Callisto cited a former senior executive who estimated the company’s revenue exposure to unlicensed operators to be as high as 30% to 40%. The firm shared its findings with regulators in North America and Europe, and three regulators reportedly opened reviews.
Investors Claim that Sportradar Misled Them
The class action leans heavily on the gap between these findings and Sportradar’s public statements. The complaint cites a November 2025 earnings call in which CEO Koerl described a “four-level” screening process and said the company works only with licensed operators backed by a global KYC team that conducts intensive know your customer (KYC) checks.
It also mentions an April 2025 appearance by Koerl on CNBC, in which he likened Sportradar’s integrity division to a regulatory watchdog for the betting industry, akin to the FBI or the SEC. Sportradar’s annual filings certified that it held all licenses and approvals “necessary” for its operations.
Plaintiffs’ lawyers argue that these statements materially misled investors, given what the short sellers alleged, and that the company exposed shareholders to undisclosed regulatory, reputation, and revenue risk.
Sportradar’s business model makes the allegations more than a minor compliance issue. The company sells data, odds, fraud detection, and integrity monitoring services to major sports leagues and sportsbooks, including the NBA, MLB, NFL, FIFA, DraftKings, and FanDuel.
Several gambling operators and major sports leagues hold equity stakes in Sportradar. That dual role as both data supplier and integrity monitor forms part of what critics say makes the alleged illegal market ties so damaging to the company’s credibility.
Sportradar Disputes the Short Seller Conclusions
Sportradar issued its own statement after the April 22 short-selling reports, stating that the allegations reflected a “fundamental misunderstanding” of its business and accusing the two firms of trying to profit from manufactured stock disruption. It maintained that it only works with licensed operators and follows strict global compliance standards, standing by all of its audited financials and risk disclosures.
The company even moved up its Q1 2026 earnings call by roughly a week to address the allegations directly with analysts. CFO Felenstein said on that call that the company’s figure for exposure to unlicensed or gray market activity sat in the range of roughly 5% to 13%. Koerl distinguished between black markets, where there is a clear, enforceable prohibition, and gray markets where the legal status is less clear-cut.
The class action case remains in its early stages. The ultimate success of the lawsuit will likely depend on discovery into Sportradar’s internal compliance practices and client relationships, and on the true gap between the short sellers’ estimates and the company’s own disclosed figures about the revenue coming from black or grey market operations.
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