RJO takes first delivery of the new Live Cattle contract, the first live commodity traded on the CME floor. Posted: August 9, 1964 / Timeline
Robert O’Brien, Sr. elected to Board of Governors of Chicago Mercantile Exchange (CME) (served continuously from 1964-1977). Posted: August 8, 1964 / Timeline
Posted: August 9, 1952 / Timeline Robert J. O’Brien, Sr., son-in-law of John V. McCarthy, joins firm and begins client and business research. John V. McCarthy & Co. has four employees.
Geraldine McCarthy, daughter of John V. McCarthy, marries Robert J. O’Brien, Sr. Posted: August 9, 1947 / Timeline
Posted: August 9, 1919 / Timeline Firm becomes founding member of Chicago Mercantile Exchange (CME) when it is transformed from the Chicago Butter & Egg Board.