Significant growth prospects and improving regulations has made the Indian infrastructure sector more interesting to global pension funds. Canada Pension Plan Investment Board (CPPIB) teamed with US-based alternative investment fund Kohlberg Kravis Roberts (KKR) last week to buy 10.3per cent stake in Bharti Infratel for Rs 6,193 crore. The Canadian pension fund contributed about Rs 2,000 crore. In late 2014, CPPIB invested a similar amount in L&T IDPL, which develops highways, bridges, airports and real estate. This was the first direct investment by an international pension fund in Indian infrastructure.