
A homebred for William's Superhorse Trust, Superium was offered at the Magic Millions National Yearling Sale but passed in shy of his $60,000 reserve and has now won more than double that sum in prizemoney.
Superium is the second winner from Rosie's Halo, who had a double at the meeting as his older half-sister by Nicconi, Jetgirl, won her fifth race when saluting over 900 metres.
By Al Maher from former brilliant Group III winner Brief Embrace, Rosie's Halo has a yearling filly by Manhattan Rain and is in foal to Rubick.
Superium is from the first and only Australian crop of More Than Ready's Group I winning son Verrazano, who shuttled to Coolmore for one season.