General Business
R.j. O'Brien & Associates, LLC
Founded in 1914 — the oldest and largest independent futures brokerage in the U.S.
Futures commission merchant at 222 S Riverside Plaza Suite 900. Founding member of the Chicago Mercantile Exchange and a full clearing member of CME Group, ICE, and CBOE Futures Exchange. Privately held and majority-owned by the O’Brien family of Chicago until acquired by StoneX in April 2025.
From rjobrien.com — verified 2026-05-19. Check the site for current hours and details.
- Address
- 222 S Riverside Plz 9 900, Chicago, IL, 60606
- Ward
- 42
- Nearest L
-
- Clinton Blue · 0.2 mi
- License type
-
- Limited Business License
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