Increasing unusual option volume: ORA PENG MRAM INVZ BWA KDK MXL VNET

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21VIANET SP ADR-A (NASDAQ: VNET) Delayed: 5.13 -0.42 (7.57%)
Previous Close $5.55    52 Week High $21.32 
Open $5.55    52 Week Low $6.77 
Day High $5.55    P/E N/A 
Day Low $5.10    EPS $0.00 
Volume 6,263,511