Hedge fund Amber has increased its stake in troubled supermarket group Laurus to almost 19%, the Financieele Dagblad reports this morning. The fund declined to comment on the strategy behind the stake.

Last year, Amber, which then had 11.5% of Laurus’ shares spurred the company to sell off units and reorganise. Laurus is 45% in the hands of French supermarket group Casino. Amber originates from French bank Société Générale, the paper reports.