Pencarrow and Ahuahu Group have invested an undisclosed sum into the healthcare provider.
NZX said the number of price enquiries rose last year.
The stock went into a trading halt yesterday.
Knighthoods and official recognition have become common in the Stewart family.
China’s travel ban could bar 90% of Chinese visitors from their travel plans.
Commentators say it’s a good idea, but must be funded properly.
Shareholders are due to vote on a takeover bid in March.
NZX-listed company’s board agrees to bid from Australian property manager Centuria.
Stake worth about $311 million.
Pride of place in his stable of investments is Greg Tomlinson’s horse racing stud.