The Romanian retail market stood at EUR17.2 billion in 2012, up 3.3% on the year, the report reads.
The food retail segment plays a significant part in the Romanian economy, not only through its direct contribution to the gross domestic product but also through the jobs it creates, according to the antitrust body.
The top ten retailers included in the survey employed about 50,000 people at the end of 2012, up 12.5% on the year.
Romania has a significant number of competitors on the retail segment, according to the survey.
The largest retailers by sales last year were Kaufland, Carrefour, Lidl, Real and Auchan. They were followed by Penny&XXL, Mega Image, Cora and Profi.
Over 200 new stores (hypermarkets, supermarket and discount stores) have been opened this year, the report reads.