The lawsuit, Yappi v. Wix.com Ltd., et al., covers investors who held securities between February 19, 2025, and May 12, 2026. Plaintiffs allege that Wix overstated the performance of its AI tools while failing to disclose the massive financial burden required to sustain them. During the company's May 2026 earnings report, Wix revealed that non-GAAP sales and marketing expenses had surged 88% year-over-year to $190.7 million. This spending, tied to the aggressive rollout of its AI platforms, caused the company’s operating margin to crater from 21% to 5%.

Management admitted during the subsequent earnings call that the Harmony platform suffered from missing capabilities, leading to customer churn as professional developers migrated to competing AI tools. Hagens Berman, the firm leading the investigation, is now scrutinizing whether leadership intentionally concealed the extent of these operational failures. Investors seeking to serve as lead plaintiff in the case have until September 22, 2026, to file with the court.