The six-year-old, who started $9 on Saturday, has now won 12 of his 25 starts and Saturday's $300,000 winner's cheque swelled his career earnings beyond $2.5m.
Second over the line in the Hollindale Stakes was Fawkner Park ($19), who finished half-a-length clear of third-placed Kovalica.
Buckaroo, the $3.80 favourite and pre-post Doomben Cup favourite, was beaten almost 18 lengths in 10th position.
The Hollindale Stakes was Blake Shinn's first time back aboard Antino since his failed attempt at the Hong Kong Mile in December and he was thrilled with the way the gelding adapted to his aggressive plan on the Heavy track.
"We had to come up with a plan to try to win the race, I trust this horse and I have a lot of confidence in Tony as a trainer," Shinn said.
"He told me it's the fittest the horse has ever been, he told me to ride the horse as he likes to be ridden and keep him comfortable and balanced, and fortunately it paid off."
The Hollindale Stakes was the second-last run at the Gold Coast with the meeting called off prematurely with the final event, the Bat Out Of Hell, abandoned due to the poor weather and deteriorating track conditions.