Turkey is a major global importer of ferrous scrap. The Turkish scrap market serves as a global benchmark and its scrap indices from The Steel Index (TSI) are used to settle derivatives contracts. TSI collects daily transaction data from over 650 market participants to calculate volume-weighted average scrap prices, with its Turkish HMS 1/2 80:20 index widely used as a global benchmark. Volatility has returned to scrap and iron ore markets in 2016 amid supply constraints and uncertainty in China.