Nexus Day Hospitals (Nexus) is the second largest day hospital operator in Australia with 12 facilities located across Sydney, Melbourne, Adelaide, Hobart, Perth, Albury, Newcastle and Canberra. Mercury invested into Nexus to facilitate the acquisition by Nexus of National Day Surgeries, to create a larger group. The combined business operates across five main medical craft groups (ophthalmic, gastro, plastic, orthopaedic and pain) with high quality surgical facilities and a management team with deep industry experience. Mercury was partnered in the investment by approximately 70 shareholder doctors.

Nexus was acquired by QIC in November 2019.