Colruyt falls after it reports drop in market share

** Shares in Colruyt COLR are down 4.2%, hitting their lowest price since May, after the Belgian supermarket chain reported a decline in its market share

** The company posted a 35-basis-point drop in market share in the first 5 months of the year, highlighting intensified competition and ongoing challenges

** Analysts at KBC Securities note that Colruyt's decision to open its Okay stores on Sundays from 2026 aims to defend market share but will likely result in higher costs due to spreading stable volumes across more days

** The broker adds that the removal of mandatory weekly closing days amplifies competitive pressures, with some Belgian stores already operating seven days a week

** While welcoming Colruyt's reiterated outlook for stable EBIT and net profit in FY25/26, KBC Securities believes the weighting of results towards H2 underscores the tough market environment