The fund uses a "passive" or indexing approach to try to achieve the fund"s investment objective. The index invests primarily in equity securities listed on the iShares Core S&P Total U.S. Stock Market ETF based on the results of a proprietary, quantitative model developed by EquBot Inc. (the "index provider") that runs on the IBM Watson" platform. EquBot is a technology-based company focused on applying artificial intelligence based solutions to investment analyses.