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Based on the names and country profiles, it should seem they are offering you the same exposure, but they track different indices, their country exposure is going to be different, and that exposure difference helps explain why they perform differently. So far, the discrepancy has helped The Vanguard fund, Todd Rosenbluth said, although both funds have taken a hit since the end of June, when the Shanghai Composite Index. SSEC started falling. Since then, The Vanguard fund has lost 11.65 percent, while the iShares fund has fallen 12.45 percent. Year to date, The Vanguard fund is down 6.97 percent, and the iShares fund is down 8.89 percent. Chinese shares have been falling on fears that the nation's economy may slow well beyond the 7 percent growth rate that analysts had earlier suggested would be a bottom for that market. China has moved to weaken its currency to bolster its economy and share prices. The difference between the two funds is expected to widen because the two different indexes they follow will be treating Chinese stocks differently. Financial Times Stock Exchange, the Financial Times Stock Exchange, plans to begin adding onshore Chinese equities, known as A-shares, to Financial Times Stock Exchange broad emerging markets indexes, which Vanguard follows. The Vanguard benchmark, the FTSE Emerging Index, now has approximately 26 percent exposure to China, according to the mutual fund company. In June, Vanguard said it would begin shifting to a new Financial Times Stock Exchange index later this year. The new index will have a 29 percent exposure to China, including a 5.6 percent exposure to A-shares. MSCI Inc( MSCI.N), however, said in June that it was not ready to include the A-shares in its two emerging market indexes.