Which financial instrument can be traded in the TBSZ?

Any instrument that you can trade on your primary account can be traded on the TBSZ, as the TBSZ inherits all trading permissions and settings of the primary account.

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How can I deposit money into the TBSZ?
How can I place securities into the TBSZ?
How can I initiate a TBSZ transfer from IBKR to another service provider?
Can I open multiple TBSZ?