This is the forex quote for the New Zealand Dollar vs. Japanese Yen exchange rate. NZD (the 'base currency') is quoted in terms of JPY (the 'counter currency'). The Yen is a historically low-yielding currency, making an attractive vehicle to fund carry trades (where traders borrow cheaply in JPY to buy higher-yielding currencies, including NZD). Investors tend to favor carry trades at times of optimism about global economic performance and stability; they shun them at times of market stress. This makes NZD/JPY sensitive to swings in broad-based market sentiment trends. The pair is likewise responsive to economic news - both domestic and that of key trading partners (notably China) - that shapes expectations for Reserve Bank of New Zealand monetary policy.
Risk appetite extended its run with the S&P 500 forging another record high and lifting many of the sentiment-oriented assets with it.