Pasta to Naperville. In 2000, Portillo opened another concept restaurant called Luigi's House. The Portillo's chain grew again in 2010 with Honey-Jam Café. The Batavia, Illinois location closed just three years later. In 2014, Portillo sold Portillo's to Berkshire Partners. The new owners are planning to open five to seven restaurants each year. Portillo has been buying the land for new sites, which he then leases back to the company. The company filed to go public in 2021. Its initial public offering sold 28% of the company as stocks traded on the Nasdaq as of October 21, 2021, with private equity firm Berkshire Partners retaining the remainder of the ownership. Outside Illinois Portillo's had licensed restaurants in Tokyo, Japan, in the late 1980s and early '90s. The Japanese locations all eventually closed. Portillo's first California location opened on October 11, 2005, at the Buena Park Downtown shopping center in Buena Park. The second California location opened in 2008 in Moreno Valley. Portillo's opened its first Florida location in 2016 in the Tampa suburb of Brandon, Florida and a second location that same year in the University Square neighborhood in Tampa. The chain generated publicity with a tongue-in-cheek open letter on its website on June 16, 2015, the day after its hometown NHL team, the Chicago Blackhawks, beat the Tampa Bay Lightning to win the 2015 Stanley Cup. The stunt received newspaper coverage in both cities. "It's official. Portillo's is coming to Tampa in 2016. Tampa residents spent years peppering us with requests to build a restaurant — you really put us in a pickle. So we're thrilled we're finally making our way to Florida," Portillo's letter said, showing the chain's ironic humor. "Let's be frank: No matter whose jersey you're wearing, everyone will be welcome. We hope you don't have a beef against us or our hometown team." Both Tampa and Brandon, FL locations are themed 30's Prohibition. The Minneapolis-St. Paul region's first location opened in Woodbury in mid-summer 2017. Shortly thereafter in early fall 2017, the chain's first restaurant in the Indianapolis Metropolitan Area commenced operations in Fishers. Many former Chicagoans have moved to both regions. In 2018, Portillo's opened its second and third restaurants in the Minneapolis-St. Paul area (Maple Grove and Roseville, Minnesota) as well as its third and fourth Indiana locations (Mishawaka and Indianapolis) in 2018. Portillo's opened its first restaurant in the Madison, Wisconsin, area