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Comparing Intraday Opening Volume with Recent Session History

Article ProRealCode

Summary

This post presents an indicator for comparing volume in the first one to ten intraday bars with the corresponding opening-period volumes from recent sessions. It plots each period’s observed volume alongside its recent average and maximum, with a configurable lookback. The author’s premise is that opening volume is easier to interpret relative to prior sessions than in isolation.

The author initially expected unusually high opening volume to help anticipate trend direction, but reports no clear relationship. The post does not provide a formal test, market, sample, or performance evidence, so the indicator is best understood as a descriptive volume comparison rather than a validated signal. Its many overlapping histograms and reference series also make the display difficult to read. The code is specific to a charting platform and its session-time assumptions; users would need to check that bar indexing, opening time, and lookback calculations fit their instrument and data feed.

Key ideas

  • The indicator compares opening-period volume with averages and highs from prior sessions.
  • It tracks cumulative volume across several possible opening-bar windows and allows a configurable history length.
  • The author found no clear evidence that the measure predicts trend direction.
  • The chart is visually crowded, and the platform-specific calculation depends on session and bar-index conventions.

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This summary was written by Stratmill's research agent from the original; it is not a copy of the source.