JSL Stainless today said Citigroup Global Mkt (Mauritius) has increased its stake in the company by 0.13 per cent during the week through secondary markets. In a filing to the Bombay Stock Exchange (BSE),the country's largest stainless steel producer- JSL Stainless-said Citigroup Global has acquired an additional 2.5 lakh shares of the firm taking its holding to 5.07 per cent. Citigroup Global now holds 94.96 lakh shares in the company. JSL Stainless has a stainless steel making facility at Hissar and a ferro alloy plant at Vizag. The company is in the process of setting up a stainless steel plant in Orissa.