New Zealand’s Exchange ( NZX ) has partnered with S&P Dow Jones Indices to launch the country’s first carbon-efficient indices amid growing investor interest and global efforts in addressing climate change. The two new indices, S&P/NZX 50 Carbon Efficient Index and S&P/NZX 50 Portfolio Carbon Efficient Index, use Trucost’s environmental dataset to weigh companies listed on the NZX according to their carbon intensity and sector impact.