The Astana rider was touted as a contender for the overall Giro d'Italia title, but a couple of tough days in the mountains allowed Alberto Contador (Tinkoff-Saxo) to tighten his grasp on the Maglia Rosa.
But the Italian has bounced back to claim two consectutive stage victories and move himself back to second overall.
Despite not being able to match Contador, Aru is pleased with performance given his relative lack of Grand Tour experience.
"I'm acquiring it over the years," said Aru. "I learned a great deal last year, and every year since I turned professional, and even as an amateur. To ride stage races, you need experience. I need to improve against the clock, but in everything.
"This year has been a different year, because I started in November with responsibility and pressure. I've always said that I'm not afraid of pressure: it motivates me to work better, but it's one thing to start a Giro d'Italia with no pressure and responsibilities, and something else to start with great responsibilities on the part of a team, the media, the fans, and myself. I've had some setbacks, but I've got back to them, and I think that, as well as these two stage wins, this is my victory.
The 24 year old now has five Grand Tours - and five Grand Tour stages victories - under his belt, but as of yet he has not competed in cycling's biggest race, the Tour de France.
But that could be about to change with Astana team manager Alexandre Vinokourov indicating after Stage 20 that he would like Aru to compete in the Tour de France alongside defending champion Vincenzo Nibali.
“We’ll see how he recovers, but I’d like to select him in France too,” Vinokourov told RAI television.
“Fabio needs to gain experience and to start getting to know the Tour. He could aim for the white jersey there too.”
SBS will broadcast every stage of the Tour de France live.