The setup is the opposite of a gap fade. On a large, news-driven gap, the trader waits for the first minutes to establish an opening-range and enters if price breaks the range in the gap's direction, with a stop on the other side.
It suits the situation where the gap reflects genuine repricing: the market has new information, the old range is irrelevant, and the path of least resistance is continuation. relative-volume well above normal is the usual filter.
The risks are specific and large. Spreads are wide at the open, slippage is worst in exactly these conditions, and reversals in the first thirty minutes are violent. Position size should be reduced, not increased, in this environment despite the temptation.
Related: gap-fill, opening-range, breakaway-gap, relative-volume, slippage