Stock Exchange Association of New Zealand v Commerce Commission - [1980] 1 NZLR 663

Commercial law — Trade practices — Jurisdiction of Commerce Commission — Whether the rule-making power of a stock exchange under s 11 of the Sharebrokers Act 1908 may create a trade practice "expressly authorised by any Act" - Commerce Act 1975, s 22(7)(a) - Acts Interpretation Act 1924, s 4.