Zabka Group shares plummeted more than 10% in late morning European trading, securing the company's position as the worst performer on the Stoxx Europe 600 index. The collapse follows a formal statement from the 7-Eleven owner confirming it would not proceed with the investment. The Japanese conglomerate cited an inability to reach terms that would serve the best interests of its shareholders and stakeholders.

This retreat marks a sharp reversal from earlier optimism. In July, reports from the Nikkei outlet triggered a rally in Zabka’s share price, driven by rumors that Seven & i was in advanced talks to secure a double-digit stake in the Warsaw-listed chain. With Monday's sell-off, that momentum has evaporated, leaving the retailer to navigate a market suddenly stripped of its anticipated strategic backing. Zabka has yet to issue an official response regarding the failed transaction.