Bordian also serves as president and CEO. CFO Danny Lee has resigned.
CFO Brent Callinicos has resigned. No replacement has been appointed.
Watros, who serves as chief operating officer, became acting CFO when Michael Culhane went on personal leave last month. Culhane has since resigned.
Geltzeiler is currently NYSE Euronext's CFO and group executive vice president.
Asmussen was vice president of strategy, planning and corporate development. He succeeds Lindon Robertson, who left to become CFO at Brooks Automation.
Davis is also president and CEO. He is taking on finance duties after CFO Fausto Taddei resigned.