discretionary account
noun[C]
FINANCEukusafinancialarrangementin which aninvestmentmanagerorbrokerhas theauthorityto makeinvestmentdecisionswithoutinstructionsfromtheirclient:
Theretailersaid thelossresultedfromtradingin adiscretionaryaccountby afinancialconsultantretainedtomanagethe company'sshort-terminvestments.