Facebook (FB) option implied volatility decreases after spiking during first hour of trading

Go back to Facebook (FB) option implied volatility decreases after spiking during first hour of trading
Facebook (NYSE: FB) Delayed: 44.56 --0 (-0%)
Previous Close $44.56    52 Week High $133.50 
Open $44.56    52 Week Low $89.37 
Day High $44.56    P/E 75.53 
Day Low $44.56    EPS $0.59 
Volume 44