Depository Trust & Clearing Corp., labeled by regulators as a systemically important financial market utility, processes $1.5 quadrillion worth of securities transactions a year. It is fixated on accuracy, efficiency, security, and risk mitigation in posttrade operations, yet it is hard to keep a conversation with president and chief executive officer Michael Bodson from veering into cloud computing, machine learning, or the distributed-ledger technology of the blockchain. The last was seen as an existential threat to clearinghouses like DTCC before Bodson began to have his say. In his letter in DTCC's 2016 annual report, the 59-year-old refuted "the overheated rhetoric that predicted our demise" and wrote "now many of the key blockchain players want to engage with us on initiatives." At the forefront of blockchain experimentation and deployment, New York–based, industry-owned DTCC has invested in Digital Asset Holdings (Bodson is a board member) and joined collaborative standards groups Hyperledger Project and Enterprise Ethereum Alliance. In an interview, he says, "We are strong believers that the distributed ledger will play an important role in the financial industry in the future."
 1. Adena Friedman NASDAQ  2. Catherine Bessant Bank of America Corp.  3. Robert Goldstein BlackRock  4. Jeffrey Sprecher Intercontinental Exchange  5. Lance Uggla IHS Markit |
 6. Shawn Edwards & Vlad Kliatchko Bloomberg  7. David Craig Thomson Reuters  8. Michael Spencer NEX Group  9. Don Callahan Citigroup  10. Elisha Wiesel Goldman Sachs Group |
 11. Michael Bodson Depository Trust & Clearing Corp.  12. Terrence Duffy CME Group  13. Charles Li Hong Kong Exchanges and Clearing  14. Sean Belka Fidelity Investments  15. Chris Concannon CBOE Holdings |
 16. Guy Chiarello First Data Corp.  17. Steven Lieblich Citadel  18. David Rutter R3CEV  19. Blythe Masters Digital Asset Holdings  20. Alfred Spector Two Sigma Investments |
 21. Neil Katz D.E. Shaw Group  22. Lee Olesky Tradeweb Markets  23. Richard McVey MarketAxess Holdings  24. David Gledhill DBS Bank  25. Seth Merrin Liquidnet Holdings |
 26. Antoine Shagoury State Street Corp.  27. Peter Brown & Robert Mercer Renaissance Technologies  28. Lou Eccleston TMX Group  29. Peter Cherecwich Northern Trust Corp.  30. Mike Chinn S&P Global Market Intelligence |
 31. Chris Corrado London Stock Exchange Group  32. Neal Pawar AQR Capital Management  33. Gary Norcross Fidelity National Information Services  34. Steven O'Hanlon Numerix  35. Sebastián Ceria Axioma |
 36. Brian Conlon First Derivatives and Kx Systems  37. Tyler Kim MaplesFS  38. Michael Cooper BT Radianz  39. Robert Schifellite Broadridge Financial Solutions  40. Jim Minnick eVestment |