Mumbai: Tata Consultancy Services has emerged as the country''s biggest IT firm and second biggest private sector company in terms of the market capitalisation, replacing Infosys Technologies.

TCS, the country''s largest software exporter, attained a market capitalisation of Rs102,000 crore, against rival Infosys'' Rs101,000 crore while Wipro retained its position as the third largest IT firm with a market cap of Rs74,500 crore.

TCS is also now the country''s fourth most valued publicly listed company, after state run ONGC, Reliance Industries and public sector power giant NTPC.

The software and IT major had crossed the Rs100,000 crore mark in market-cap on September 20. TCS had attained a market cap of about Rs1,00,550 crore with a surge of 1.71 per cent in its share price to Rs1,027.50 on the BSE.

While TCS and Infosys are the only two IT companies with a market cap of over Rs100,000 crore, Wipro had already breached this level with a market cap of Rs200,000 crore on February 2, 2000.