Increasing unusual call option volume: OPEN BTBT CWEB PRME NVDQ NB

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NOVADAQ TECHNOLOGIE (NYSE: NVDQ) Delayed: 9.74 +0.19 (1.99%)
Previous Close $9.55    52 Week High $14.36 
Open $9.42    52 Week Low $8.26 
Day High $9.77    P/E N/A 
Day Low $9.41    EPS $0.00 
Volume 3,344,462