21. Bradley Keywell
« 20. J.B. Pritzker22. Jeff Smisek » AGE: 42 OCCUPATION: Investor and tech entrepreneur He’s quieter than venture capital partner Eric Lefkofsky (No. 10) and former boss Sam Zell (No. 26), but his accomplishments speak volumes. Keywell cofounded not only Groupon but also Lightbank (a business incubator that’s helping Chicago become a tech hub) and … Read more
