The US-based mutual fund, Morgan Stanley Investment Management, has almost doubled its stake in the Italian drinks group, Davide Campari. According to a statement by the Italian stock market regulator, Consob, Morgan Stanley has increased its stake in Campari from 5.199% to 9.389%. The transaction was carried out last week. Morgan Stanley Investment Management manages a fund on behalf of institutional investors worth in the region of US$170 billion.