The Financial Markets Authority has no plans to follow its UK counterpart and impose limits on the leverage that derivatives issuers can offer their clients.
Shares in global derivatives broker CMC Markets plunged by as much as one third in London trading on Tuesday after the UK's Financial Conduct Authority released a consultation paper proposing tough new regulations for CFD (contracts for difference) traders - including products such as spread bets and rolling spot foreign exchange products.
The FCA said it had "concerns that more retail customers are opening and trading CFD products that they do not adequately understand".
Its analysis using a representative sample of client accounts for CFD firms found that 82 per cent of clients lost money on these products.
The New Zealand office of CMC Markets is not commenting but pointed to a press release from its London head office that noted that this is just a consultation document.