MF Global's bankruptcy trustee warns that it may not be able to fully reimburse 100% of the amount that customers are missing. The "flash crash" fallout continues as the SEC steps up enforcement actions and gag orders against exchanges. NYSE Euronext deputy chief executive Dominique Cerutti claims the exchange won't make any further concessions to gain approval from EU regulators of their merger with Deutsche Boerse. And NYSE Liffe U.S. is named 'Exchange Of The Year' By Risk Magazine.