In theory, island gap reversals are nothing but a gap closed by another gap. No volume occurs in this zone. This zone is a high probability short term zone. At times it gives trading opportunities and at times it even provides investing odds as well where the destination target is always the filling of the gap.
Sometime back during Apr 2016 we have curiosity about pharma sector bottoming out. By that time sector has strong negative sentiment while hitting the panic bottom from there is had made a 2016 high of 12011. We believe that longer timeframe players are still interested in this sector though the presence of intermediate buyers.