Increasing unusual option volume: BIRK SWBI CHK SRPT ACHR LXRX

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(NYSE: BIRK) Delayed: 38.05 +0.19 (0.50%)
Previous Close $37.86    52 Week High
Open $37.60    52 Week Low
Day High $38.84    P/E N/A 
Day Low $37.60    EPS
Volume 604,672