The iShares S&P North American Natural Resources Index Fund (Ticker: IGE), formerly iShares Goldman Sachs Natural Resources Index Fund, seeks investment results that correspond generally to the performance, before fees and expenses, of the S&P North American Natural Resources Index. The index includes companies in categories, such as integrated oil, oil exploration and production, oil services, metals, mining, coal, paper and forest products. This index uses a modified capitalization weighting based upon floated adjusted common shares outstanding. Each stock's index weighting is capped at 7.5% and index rebalancing occurs semi-annually in June and December.