NIO Inc. (NIO) option implied volatility into Tesla (TSLA) China headlines

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NUVEEN MUNICIPAL OPPORTUNITY FUND, Inc. (NYSE: NIO) Delayed: 5.02 -0.07 (1.38%)
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 7,746,609