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Why does BlackRock's XIN page show XIN as having only 1 holding?
EFA must be bought and sold in US dollars. XIN allows people to buy and sell EFA in Canadian dollars without exposing their investment to unpredictable swings in the USD/CAD ratio.  This is what's known as a currency-hedged instrument. Now, why the chart sums up to over 100% is anyone's guess.  Presumably it's the result of a couple hundred rounding errors from all the components.  If you view their most recent report, it also sums up to over 100%, but at least the EFA component is (sensibly) under 100%. P.S. I'm not seeing where it says there's only one holding.  There's the primary holding, plus over 100 other cash holdings to effect the currency-hedging.