Dealer operations and the securities trading account Many large banks hold securities as part of a trading account. A trading account represents an inventory of securities that a bank holds for resale to other investors: In this capacity,banks operate both as primary dealers with the Federal Reserve and as market makers with other participants. 猫的资5+号Dealer operations and the Dealer operations and the securities trading account securities trading account † Many large banks hold securities as part of a trading account. † A trading account represents an inventory of securities that a bank holds for resale to other investors: „ In this capacity, banks operate both as primary dealers with the Federal Reserve and as market makers with other participants