DerDaily
April 11, 2026
Normalized ATR indicator: current session range as a percentage of historical average
DerDaily
April 11, 2026
Session ATR Percent displays the current session's Average True Range as a percentage of its historical average, shown as a text overlay directly on your chart. It tells you at a glance whether today's session is running hotter or cooler than normal: a single number that captures whether you're in a typical, extended, or compressed range day.
Raw ATR values are hard to interpret without context. "ATR is 12 points" means nothing on its own: is that high for this instrument? Low? About average? Session ATR Percent normalizes the answer: 100% means today matches the historical average, 150% means today is running 50% hotter, 60% means today is unusually compressed. The reading updates throughout the session as the current range builds.
After purchase, Session ATR Percent is added to your Sierra Chart account automatically. Restart Sierra Chart, then add the study to a time-based chart (1 minute, 5 minutes, 1 hour, or any time-based bar type) via Analysis → Studies → Add Custom Study → Session ATR Percent. Configure the session start and end times to match the window you care about, set the history length, and position the text overlay.
At runtime, the study computes the ATR for the current session within the configured time window and divides it by the rolling average ATR over the last N completed sessions. The result is displayed as a percentage on the chart. When the session ends, that day's ATR is added to the rolling history and the oldest value drops off if the window is full. The next session starts fresh, and the reading rebuilds from there.
The study requires a time-based chart because it relies on time-based session boundaries to define what "today's session" means. It will not work on tick, volume, range, or Renko charts.
Works exactly as advertised, great work!
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