April 28 (Reuters) - Clairvest Group Inc CVG.TO
* Clairvest adds to gaming portfolio with a new investment in head infotech
* Co with limited partnerships controlled by it, made a us$73.7 million investment in head infotech india pvt. Ltd
* Clairvest's portion of investment will be approximately us$40 million Source text for Eikon: ID:nCCN2M686d Further company coverage: CVG.TO