Opening Range
The high–low range of the first minutes after the open — a reference frame for the whole day.
What it means
The opening range is the price band carved out in the first 5, 15 or 30 minutes of regular hours. Breakouts above it (ORB — opening range breakout) are one of the oldest and most studied intraday setups.
The logic: the opening auction and the first minutes digest all overnight information. Once that battle settles, a clean break of the range signals that one side has won.
Why traders care
- Turns the chaotic open into concrete levels you can code rules against.
- Works as a filter too: many traders skip entries until the opening range is set.
In a TraderWe strategy
if HhmmSs >= 100000 and Price >= HighestPrice(1800):
Buy()After 10:00, buy a break of the last 30 minutes' high — an opening-range-style breakout.
Educational content, not investment advice. Engine details describe how TraderWe computes this value; other platforms may define it differently.