NIO Inc. (NIO) option IV into quarter results

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NUVEEN MUNICIPAL OPPORTUNITY FUND, Inc. (NYSE: NIO) Delayed: 4.62 --0 (-0%)
Previous Close $4.62    52 Week High $14.86 
Open $4.62    52 Week Low $13.31 
Day High $4.62    P/E N/A 
Day Low $4.62    EPS $0.00 
Volume 931,883