Any of the Chicago interest rate options flow that is done electronically is usually crossed (customer and local) by the same NYC/London broker that begins with an M and ends in Financial. I am sure anyone can guess that one. The complicated spreads are offered on the screen both in Euro$'s and in the Treasuries but they are not being used. Outright options trades have gained traction in Treasuries over the past year, especially trades executed before the 7:20am pit open, but those same trades have also been done during pit hours as well. Again, usually NYC/London desks doing those. Chicago execution brokers for the most part are putting options in the pit and will for some time, have to help their broker buddies make a living. As for option locals, not a whole lot making money right now with volatility so low in the rates market (and should be for quite some time going forward). I really wouldn't count on getting into any of the financial options pits. They are dominated by the big Chicago groups (DRW, Chicago Trading Company, Capstone, Mako, etc.) and long-time HUGE individual locals who grew up with the broker standing next to them. Your best shot at making it into the Financial options is getting hooked up with some of the aforementioned groups. If you are backing yourself you will never get a trade. Just my two cents. I watched the 5yr, 10yr, and 30yr options pits for the past 3.5 years or so and that is what I seemed to observe as electronic trade has increased.