the attacks. The New Zealand Exchange ruled out paying the ransom and sought assistance from internet service provider Spark New Zealand and the country's signals intelligence agency Government Communications Security Bureau. Principal activities The NZX involves itself in a number of activities. It operates and regulates securities and derivative markets and provides trading, post-trading and data services for securities and derivatives, as well as the providing a central securities depository. The NZX is the only registered securities exchange in New Zealand and is also an authorized futures exchange. Its wholly owned subsidiary, the New Zealand Clearing and Depository Corporation, is the operator of a designated settlement system under part 5 of the Reserve Bank of New Zealand Act 1989. NZX provides passive funds management products through the Smartshares family of exchange-traded funds (ETFs) and is a provider of superannuation, KiwiSaver and investment products through SuperLife, which it acquired in 2015. The NZX is also the market operator for New Zealand's wholesale electricity market and the Fonterra Shareholders’ Market, under contract from the Electricity Authority and Fonterra respectively. See also NZX 50 Index List of companies listed on the New Zealand Exchange List of companies delisted from the New Zealand Exchange List of stock exchanges in the Commonwealth of Nations References External links Financial services companies established in 2002 Companies based in Wellington Financial services companies of New Zealand Stock exchanges in Oceania Buildings and structures in Wellington City Futures exchanges