The overnight wait could distract sufficiently from the obviousness of this pattern to make it an easy winner.  I haven’t furnished a specific entry price because actual price action may differ from the sketch, but the idea of it is that a trigger at ‘X’ within the first hour or so of Friday’s session has good potential to provide a relatively low-risk play to at least the midpoint support.  If you simply want to use this set-up analytically, you can infer from a breach of ‘X’ that lower prices are imminent. _______ UPDATE (noon EDT):  Stocks plummeted from the opening bar, so the only way in — and not a very good way — was to short at the bell using a market order.