You need to fund your Brokerage Cash Account before you can trade. Here are the various ways to fund your Brokerage Cash Account: Online funds transfer from another Citibank account or another bank Check deposit (simply write your Brokerage Cash Account number behind the check) Inbound Funds Transfer Inbound Funds Transfer (This is applicable only if you have opened a SGD Brokerage Cash Account) Cash deposit at Citibank branches and Cash Deposit Machines