[4] Naratil started his career in finance in 1983 when he joined the brokerage firm Paine Webber Jackson & Curtis.
[11] In July[9] 1983 Naratil joined the American brokerage firm Paine Webber Jackson & Curtis[2] through its corporate intern program.
In that role, he was responsible for "the sales, marketing and trading of all taxable debt, convertible securities and preferred stock" of UBS.
During the 2007–2008 financial crisis, he served as head of UBS’s Auction Rate Securities Solutions Group.
On January 1,[9] 2014, he was named UBS’s chief operating officer (COO) in addition to his CFO responsibilities.
"[8] The Wall Street Journal wrote that Naratil was expected to continue the unit’s focus on "primarily serving clients who have millions of dollars to invest.
[7] The reorganization involved cutting recruitment of US advisors by 40 percent annually, as well as thinning management ranks.
[27] Naratil and his wife Wendy[28] have five children, three of whom also work in the financial services industry,[29] and reside in New Jersey.
[11] In 2013, Yale University accepted an endowment from Naratil and his wife to fund the Wendy U. and Thomas C. Naratil Pioneer Award, which supports "an investigation that is either highly inventive or close to a major breakthrough in advancing women’s health — where funding is needed to reach its aims.