China's Nio teams up with Geely on auto battery swapping

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NUVEEN MUNICIPAL OPPORTUNITY FUND, Inc. (NYSE: NIO) Delayed: 3.41 -0.01 (0.29%)
Previous Close $3.42    52 Week High $14.86 
Open $3.42    52 Week Low $13.31 
Day High $3.43    P/E N/A 
Day Low $3.40    EPS $0.00 
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