Akademik
Asso - bank
Association of Eurasian Central Securities Depositories
Association of Global Custodians
Association of National Numbering Agencies
assured payment
assured payment system
attachment
attorney in fact
attorney-in-fact
authentication
authentication procedures
Authorization and Exception System
authorized capital
authorized shares
Automated Clearing House
Automated Customer Account Transfer Service
back leg
back office
back-to-back trades
back-to-back transactions
bad delivery
bad delivery reversal