In general, securities in a customer custodial account are merely held in safekeeping by the bank. They are your property and must at any time be paid out to you or transferred to another custodial account – including in the event of default.
If, contrary to expectations, that is not possible, then investor compensation comes into play. In this regard, the relevant securities are protected up to a maximum of EUR 20,000. As a legal person, you’ll receive 90% of the claims – but likewise up to at most EUR 20,000.
Balances in your accounts are covered by deposit protection, e.g. balances from distributions to securities settlement accounts.