CBOE bans access to 600 CBOT members -report

(Reuters) - At last count, about 252 CBOT active members were using
their exercise rights to trade at CBOE.




The "exercise rights" allow full members of CBOT to trade
options on the CBOE without owning a CBOE membership. The
rights were created when CBOT spun off the options exchange in
1973.


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