Ocado has agreed to build a large robotic warehouse for a European retail chain, providing a boost to the UK-based firm. The retail technology company's shares jumped by as much as a 10th on Tuesday after agreeing the new deal. Ocado told investors it has sealed an agreement to build a large customer fulfilment centre for a "fast-growing European national retailer". The facility will include new Ocado technology, including its robotic picking product and fully automated freezers. Last week, Ocado said it has held talks with potential new partners, including "live engagement" with potential partners in the US.