Took that approach to "buy the blood in the streets" and sell the cheers for 30 years...the strategy seems to have worked out well. ;)
Note that my personal biotech ($XBI) bullishness s based more upon macro market dynamics than any sort of event. In fact less macro events the better as one leg of my thesis is rangebound 10-year interest rates.
On the other hand, $AVXL is pure biotech speculation at it best, and for it to occur within a more stable sector market the better.