EWS holds a concentrated portfolio of large- and midcap Singaporean equities, which covers approximately 85% of the total market capitalization in Singapore. Selected securities are weighted by market-cap and are constrained at each quarterly rebalance, such that no individual stock exceeds 25% weight and the aggregate weight of securities with over 5% allocation is capped at 50% weight of the portfolio. Prior to December 1, 2016, the fund tracked the MSCI Singapore Index and traded under the fund name, iShares MSCI Singapore ETF. The new index employed specific diversification schemes which impacted the funds weight allocation.