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

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NUVEEN MUNICIPAL OPPORTUNITY FUND, Inc. (NYSE: NIO) Delayed: 4.62 -0.2 (4.15%)
Previous Close $4.82    52 Week High $14.86 
Open $4.63    52 Week Low $13.31 
Day High $4.64    P/E N/A 
Day Low $4.51    EPS $0.00 
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