Wonder, the food delivery and food technology startup founded by Marc Lore, has confidentially filed for an initial public offering. The company announced the filing on Thursday. It has not said how many shares it plans to offer or at what price range.

Founded in 2018, Wonder operates food hall-style locations where customers can order from multiple restaurant brands through one platform. The company handles meal preparation, delivery, pickup and dine-in service. Lore previously founded Jet.com and Diapers.com and has openly discussed taking Wonder public.

In July, Wonder announced it had raised more than $650 million in a round that valued it at about $9 billion. Investors include Accel, GV, AllianceBernstein and ARK Invest.

The company has expanded through acquisitions, buying meal-kit company Blue Apron, delivery platform Grubhub, media company Tastemade and kitchen robotics firm Spyce. The Spyce deal gives Wonder access to automation technology that could streamline food preparation and serving. Wonder is also pushing into Texas, where it aims to open more than 100 locations by the end of 2027.

Other initiatives include Wonder Create, a platform that lets food entrepreneurs and social media influencers develop restaurant brands, concepts and menu items, using AI to launch brands in less than a minute. Wonder also has a $425 million partnership with DoorDash to expand its campus dining business, which operates at 450 colleges and universities and other sites.

A public listing will bring fresh scrutiny. Wonder competes in a crowded delivery market against established players including DoorDash and Uber Eats.