Dealroom. Kolkata-based media group Sanmarg Private Limited has acquired a 100 per cent stake in Tehelka.com Private Limited, marking its entry into the magazine segment and. Sanmarg acquires Tehelka.com, plans to transform it into a weekly magazine and expand its digital presence in the media landscape. Kolkata, Nov 4 (PTI) City-based media group Sanmarg Private Limited has acquired a 100 per cent stake in.