Workshop participants often arrive with five volume indicators enabled and none of them agreed. We strip the chart back to raw daily volume and a twenty-day simple average. That is sufficient for the breakout decisions we teach.
The 1.2 ratio rule
On the break day, total volume should reach at least 1.2 times the twenty-day average. Not 3x, not a dramatic spike — just enough participation to suggest the level mattered to more than a handful of traders. We chose 1.2 after back-testing workshop case studies on FTSE 350 names; it filters penny closes without demanding institutional block prints.
Declining volume into the break
Watch the five sessions before the break. If volume has been declining while price compresses against resistance, a sudden 1.2x day carries more weight than the same reading after a choppy, high-volume drift. We call this the coiled spring context — not a separate indicator, just a visual scan before you check the ratio.
When we ignore intraday volume
Participants trading shorter timeframes sometimes cite a lunch-hour spike as confirmation. For our daily breakout checklist, only the full session close and full session volume count. Intraday data can inform entries after the break is confirmed; it does not confirm the break itself.
Exceptions we discuss openly
Thinly traded AIM stocks may never hit 1.2x without news. FX spot has no central volume — we use tick volume on daily charts with scepticism and prefer currency futures volume when available. These caveats are part of day one afternoon, not footnotes.