For DDS, what are there additional requirements for foreigners? March 11, 2020 07:36 Updated If opening a new account, submit (1) Additional Information for Client and (2) FATCA for New Account (US citizens only). Click here for the Forms. Related articles Can I buy DDS using my Peso trading account? Who can trade DDS? FORMS (TRANSACTIONAL) What are Dollar-Denominated Securities (DDS)? Why invest in Dollar-Denominated Securities (DDS)?