It's been two years since the female-led Ghostbusters took on the ghouls of New York in the divisive reboot. Fans have called for a sequel, and Sony Pictures has characterized the property as an "important brand and franchise," and yet there's been no public movement on a follow-up. However, director and co-writer Paul Feig still holds out hope that the Ghostbusters will be back.

“We would love [to make another movie]," he told Yahoo! Entertainment at CinemaCon in Las Vegas. "It’s really up to the studio."

RELATED: Paul Feig Wishes Ghostbusters Remake Hadn't Turned Into a "Cause"

Sony has plenty of sequels on its slate, including Sicario: Day of the Soldado, a third Hotel Transylvania, The Equalizer 2, and additional installments of Spider-Man, Girl With the Dragon Tattoo and Men in Blacks. The holdup may not be that the studio doesn't want to make another film, but that it doesn't know how to incorporate the two separate versions of the franchise.

Ivan Reitman, who directed the two original Ghostbusters films, has been vocal about continuing his own franchise while connecting it to the one Feig created. He's planning to do so with an animated film targeted for release in 2019, but he has been adamant about a live-action feature, especially for the franchise's 35th anniversary in 2019. Whatever Feig feels about uniting the two universes somehow, he believes in the lasting impression of his film.

RELATED: Dan Aykroyd Wants to See a Ghostbusters Series On Netflix

"The movie’s just really built an audience in the two years since it’s been out," he said. "I get contacted every day by people who are such fans of it, and so many women who are inspired by seeing women in science."