THE three-year survey on foreign exchange activities conducted by the Bank for International Settlements will expand its scope to include non-currency related derivative trading this year. Reflecting international regulators' concern for banks' derivative trading, the global survey will cover not just currency-related derivatives as previously. It will include interest-rate related, equity and commodity prices related derivatives. All authorised institutions in Hong Kong, mainly banks, received a questionnaire on bank foreign exchange and derivative trading activities from the Hong Kong Monetary Authority, the territory's de-facto central bank. The institutions must complete the form by May 26 and results should be announced in September.