根据 TD FAQ : 现有的 Schwab 客户有 Login ID/password :
About a month before your transition date, you'll receive a notice in the
Schwab Message Center with a link to preview a list of your TD Ameritrade
account(s) moving to Schwab. To view your notice, you'll need to log in at
Schwab.com using your existing Schwab Login ID and password. You won't need
to create a new Schwab Login ID or password.
We'll create a new Schwab account for every TD Ameritrade account that you
have, and you'll be able to access all your accounts with your existing
Schwab Login ID and password.
然后根据 https://welcome.schwab.com/schwab-client?aff=XWV
Once your move is complete, you'll see all accounts in one place on your
Schwab Accounts Summary page. While there, watch for messages and details
about combining accounts.
个人结论, 目标一定是先全部搬过去, (资料/资产)无误后面就再说拉.
全部都在一个 Schwab ID 下, 东西要搬来搬去,合并,关闭Account等都是相对简单的事情.