Greece's Varoufakis: I will resign if there's a 'Yes' vote

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GLOBAL X FTSE GREECE 20 ETF (NYSE: GREK) Delayed: 81.79 +0.60 (0.74%)
Previous Close $81.19    52 Week High $9.58 
Open $82.14    52 Week Low $5.56 
Day High $82.28    P/E N/A 
Day Low $81.60    EPS $0.00 
Volume 28,052