Opening extreme
What does it mean when a week's high or low is set within its first hours, and how should the rest of the week be read?
In plain words
An opening extreme occurs when the highest or lowest price of a week is reached almost immediately, at the open. Everything that follows trades within, or below, that first mark rather than pushing past it.
Why it matters
The opening extreme shows that the market's strongest price arrived before any real weekly trading had time to unfold. Positions taken later in the week face a structure where the ceiling or floor was set at once, making recovery to that level a separate and harder move.
In a real week: BTC, week of 13 June 2022
In the week of 13 June 2022, BTC printed its weekly high of 26895.84 at 00:00 UTC on Monday, the first hour of the week, 1.21% above the open of 26574.53. The week then fell 22.58% to close at 20574.0, with its low of 17622.0 arriving only on Saturday at 20:00 UTC. Monday was also the worst day, down 15.38%.
A common mistake
Reading an opening high as a brief spike that later gets retested. Often no later session reaches it, so the week is defined by a decline from a mark set before trading had developed.