Click to view a price quote on ELLI. : Shares of software-as-a-service company Ellie Mae Inc. (ELLI) surged more than 21% Tuesday after private-equity firm Thoma Bravo LLC said it was buying the company in an all-cash deal valued at $3.7 billion. Elli Mae jumped 21.4% to $99.49 on the New York Stock Exchange after ending the day Monday at $81.92.