NIO Inc. (NIO) call put ratio 3.3 calls to 1 put into quarter results

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NUVEEN MUNICIPAL OPPORTUNITY FUND, Inc. (NYSE: NIO) Delayed: 5.13 +0.08 (1.58%)
Previous Close $5.05    52 Week High $14.86 
Open $4.88    52 Week Low $13.31 
Day High $5.18    P/E N/A 
Day Low $4.87    EPS $0.00 
Volume 14,711,411