Reuters/Lucas JacksonHere is what you need to know. Oil is on track for its worst first-half performance since 1997. Oil has tumbled by more than 20% in 2017. The kiwi spikes after New Zealand's central bank keeps policy on hold. The New Zealand dollar, often referred to as the kiwi, is higher by 0.5% at .7260 against the dollar after the Reserve Bank of New Zealand held its key rate at 1.75%.