Exelixis, Inc. (EXEL) Stock Crashed - Should I buy?

Exelixis (EXEL) Stock Collapses from Mixed Results In Liver Cancer Study. Stock is at a 7 month low. Is it good time to buy?
ENDP Endo Int $4.75
ALLO Allogene $26.55
RMTI Rockwell $0.88
EXEL Exelixis $18.64
AVEO AVEO Ph $6.30
NKTR Nektar T $17.52
OMER Omeros $15.66
BAX Baxter I $81.47
NBIX Neurocri $97.46
MITO Stealth $1.58
BBIO BridgeBi $63.61
NVS Novartis $91.65
MDT Medtron $126.13
BMRN Biomarin $83.91
DVA DaVita $122.33
AKBA Akebia T $3.88
ARDX Ardelyx $7.95
ALNY Alnylam $169.75
AZN AstraZen $60.31
ARWR Arrowhe $84.96
HCM HUTCHM $38.71

[chiragshah]

what u think about $FROG? Any good options