< The 2016 Trading Technology 40

20
Paul Hamill
Global Head of Fixed Income, Currencies and Commodities
Citadel Securities
PNR

As regulatory reforms rein in banks’ risk taking, Citadel Securities is moving aggressively to fill the breach. Paul Hamill, who joined the institutional trading arm of Chicago-based hedge fund firm Citadel in January 2015, is building a market-making business that includes interest rate swaps, government and corporate bonds and credit default swaps. “We’ve been able to identify opportunities for the business to grow and develop in the face of ongoing structural changes in the market,” says Hamill, who was global head of forex, rates and credit execution services at UBS before joining Citadel Securities as global head of fixed income, currencies and commodities (FICC). “We’ve been able to look at market changes as an opportunity rather than take a ‘sky is falling’ approach,” the 40-year-old adds. “It’s been eye-opening to realize how much appetite there is among the client base to do things differently and to find new ways to get better liquidity.” Citadel is the first-ever nonbank liquidity provider for interest rate swaps and, according to Bloomberg, is the No. 1 provider of dollar swap liquidity — a “huge feat,” Hamill says. Citadel provides fully executable prices for swaps and U.S. Treasuries; Hamill is looking ahead to rolling out swaps in the major currencies in Europe and credit indexes in the U.S. and Europe. With an MA in political science from the University of Glasgow and a master’s of science in finance from the University of London, Hamill held FICC positions at UBS from 2000 to ’08 and 2008 to ’10, with a stint at Barclays Capital in between.

 
2016 Trading Technology 40

1. Raymond Tierney III Bloomberg 2. Richard Prager BlackRock Sponsored Is the Market Really Sure About Its Direction? Sponsored by CME Group October 27, 2025 3. Chris Isaacson BATS Global Markets 4. Jonathan Ross KCG Holdings 5. Bradley Peterson Nasdaq

6. Brad Levy Markit 7. Dan Keegan Citi 8. Ronald DePoalo Fidelity Institutional 9. Raj Mahajan Goldman Sachs Group 10. Ari Studnitzer CME Group

11. Mayur Kapani Intercontinental Exchange 12. Gerald O’Connell CBOE Holdings 13. Nicholas Themelis MarketAxess Holdings 14. Gil Mandelzis EBS BrokerTec (ICAP) 15. Bill Chow and Richard Leung Hong Kong Exchanges and Clearing

16. Rob Park IEX Group 17. Philip Weisberg Thomson Reuters 18. John Mackay (Mack) Gill MillenniumIT 19. Robert Cornish International Securities Exchange 20. Paul Hamill Citadel Securities

21. Eric Noll Convergex 22. Tyler Moeller and Joshua Walsky Broadway Technology 23. Rishi Nangalia REDI Holdings 24. Veronica Augustsson Cinnober Financial Technology 25. Alasdair Haynes Aquis Exchange

26. Manoj Narang Mana Partners 27. Gaurav Suri Arcesium 28. Robert Sloan S3 Partners 29. Anton Katz and Stephen Mock AQR Capital Mgmt 30. Stu Taylor Algomi

31. D. Keith Ross Jr. PDQ Enterprises 32. Donal Byrne Corvil 33. Alfred Eskandar Portware 34. R. Cromwell Coulson OTC Markets Group 35. Masayuki Hosaka Rakuten

36. Peter Maragos and David Karat Dash Financial 37. Amar Kuchinad Electronifie 38. Jennifer Nayar SR Labs 39. Dave Snowdon Metamako 40. Dan Raju Tradier