
As mentioned before, Implied Volatility (IV) does factor in future important events / news which are expected to move the option�s price considerably within the next 30 trading days (e.g. earnings announcement, FDA approvals, etc.).For some regular events, such as earnings announcement, which typically take place on a quarterly basis, we could see some common behavior before & after the announcement.Generally, IV would normally start to increase since a few weeks before the announcement day.Once the announcement is out, the IV will usually drop significantly.On the other hand, the Historical Volatility (HV) may rise drastically should there...