One of Atlanta’s primo private equity firms, and the owner of Arby’s Restaurant Group Inc., is raising a $1 billion-plus fund.

Roark Capital Group has raised about $462 million of a proposed $1.25 billion private equity fund, according to a SEC filing.

For Roark, the new fund will be its second billion-dollar fund. The firm has $1.5 billion of equity under management and has invested in 21 franchise/consumer brand companies operating in 50 states and 52 countries, including Atlanta-based brands such as Arby’s, Batteries Plus, Moe’s Southwest Grill, Cinnabon, Carvel Ice Cream, Seattle’s Best Coffee International and Primrose Schools.