One Stop Systems (OSS) 8200 contracts of July 30 calls trade

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Koss Corp (NASDAQ: OSS) Delayed: 5.95 --0 (-0%)
Previous Close $5.95    52 Week High $7.00 
Open $5.95    52 Week Low $7.00 
Day High $5.95    P/E 4.61 
Day Low $5.95    EPS $1.29 
Volume 4,652