Tata Industries has sold shares worth Rs 634.80 crore (Rs 6.34 billion) of the country's largest software exporter Tata Consultancy Services through an open market transaction.

According to bulk deal data available on the National Stock Exchange, TCS promoter group firm Tata Industries has sold 1.03 crore shares of TCS at Rs 615.04 a piece, aggregating to over Rs 634.80 crore.

As of March quarter, Tata Industries held 5,14,850 shares representing 0.05 per cent stake in TCS.

Shares of TCS closed at Rs 635.10, down 2.36 per cent on the BSE.