Subway was co-founded by Fred DeLuca and Peter Buck in 1965. Since Fred DeLuca passed away in 2015 and Peter Buck in 2021, their wealth has been managed through their respective estates and philanthropic foundations. At the time of their deaths, both were billionaires; Peter Buck had an estimated net worth of approximately $1.7 billion, much of which he famously bequeathed to the Peter and Carmen Lucia Buck Foundation. In 2023, the Subway brand was sold to the private equity firm Roark Capital for roughly $9.6 billion. This massive acquisition significantly increased the liquidity of the founders' estates. DeLuca's widow and Buck's heirs remain among the wealthiest families in Connecticut. While they are no longer actively running the sandwich empire, the legacy of their initial $1,000 investment continues to generate immense value. The DeLuca family, in particular, has remained private about their current total assets, but the multibillion-dollar sale of the company ensured that the "Subway fortune" remains one of the largest success stories in the history of the fast-food industry.