Canadian investment firm Urbana Corporation has said it is looking to buy a 5 per cent stake in India's largest bourse National Stock Exchange (NSE), for an estimated Rs 600 crore. For the intended acquisition, Urbana's investment firm Caldwell Investment Management has signed an agreement with leading financial intermediary IL&FS to identify the banks and institutional shareholders of NSE, who are interested in selling their equity. Earlier this month, another overseas fund Norwest Venture Partners signed an agreement to acquire a 2.11 per cent stake in NSE from IL&FS Securities Services for Rs 250 crore, valuing the exchange at over Rs 12,000 crore. […]