Nio (NIO) explores technology partnership with Mercedes

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NUVEEN MUNICIPAL OPPORTUNITY FUND, Inc. (NYSE: NIO) Delayed: 4.95 -0.14 (2.75%)
Previous Close $5.09    52 Week High $14.86 
Open $4.97    52 Week Low $13.31 
Day High $5.07    P/E N/A 
Day Low $4.95    EPS $0.00 
Volume 17,803,195