According to data from Venture Intelligence, the invested amount was 80 per cent higher than USD 2.24 billion in the April-June quarter last year infused through 115 transactions.
The latest figures take the total PE investments in 2015 to USD 6.87 billion through 288 transactions, 53 per cent more than the USD 4,480 million across 252 transactions in the first six months of 2014.
The figures exclude PE investments in real estate.
The largest investment during the April-June quarter was Baring Asia's USD 440 million buyout of Blackstone-backed ATM cash management services firm CMS Infosystems, followed by Olacabs' USD 400 million fund raise from a group of existing and new investors (including GIC, DST Global, Falcon Edge Capital and Accel USA).
Other major deals include, Advent International led USD 315 million buyout of a 34.4 per cent stake in Crompton Greaves Consumer Electricals from its promoter Avantha Group.