SUPL tracks an index of companies primarily involved in the logistics of moving raw materials, intermediate goods, and finished products around the globe. Eligible companies must be included in at least one of 17 RBICS Sub-Industries related to the supply chain logistics industry, which encompasses logistics support and software, rail and air freight, trucking, and sea shipping. The index selects the 40 largest companies that generate at least 75% of their revenue from the related industry. If less than 25 companies are selected, the revenue threshold is decreased to 50% and companies with the highest percentage revenue related to the industry are added until the portfolio reaches 25 constituents. Weightings are based on market-cap, with a limit of 4.5% per issuer. The index will principally invest in common shares, ADRs and GDRs listed for trading on a stock exchange globally. The index is reconstituted and rebalanced semi-annually in June and December.