EWT tracks an index that includes large- and midcap stocks, covering 85% of broad Taiwanese companies by market cap. EWT changed its name from iShares MSCI Taiwan ETF to iShares MSCI Taiwan Capped ETF on Dec. 1, 2016. It changed its underlying index from MSCI Taiwan Index to MSCI Taiwan 25/50 Index. The new index has explicit diversification requirements which may impact the weights of EWT`s top holdings. The capping methodology aims to limit the weight of any single issuer to a maximum of 25% of the Underlying Index. Additionally, individual issuers that constitute more than 5% of the weight of the Underlying Index cannot exceed a maximum of 50% of the weight of the Underlying Index in the aggregate.