Intraday Chart Timeframes and Session Structure
Choose a practical pair of intraday timeframes, divide the session into phases, and measure a volatility profile to adapt stops and size to the time of day.
What you will learn
- What 1-, 5- and 15-minute charts show and how many bars a session contains.
- How to combine a context chart and an execution chart.
- The typical phases of a trading session and why behaviour changes between them.
- How to build your own volatility profile and use it for stop size and cost in R.
Explanation
Intraday timeframes
A timeframe is the period that one bar or candle on the chart represents. Common intraday choices are the 1-minute, 5-minute and 15-minute chart. A shorter timeframe shows more detail but also more noise: small, random-looking movements that carry little information.
It helps to know how many bars a session contains. Xetra continuous trading from 9:00 to 17:30 lasts 510 minutes; the US regular session from 9:30 to 16:00 New York time lasts 390 minutes.
Bars per session = session minutes ÷ bar length in minutes
Context chart and execution chart
Multi-timeframe analysis in general was covered in the course "Technical Analysis". For day trading, a simple pair works well: a context chart (for example 15 minutes) shows the intraday trend and key levels; an execution chart (for example 5 minutes or 1 minute) shows the exact entry trigger and stop. A ratio of about 3 to 5 between the two timeframes keeps them related without showing the same picture twice. Choose one pair and keep it; switching timeframes during a trade usually means you are looking for a reason to change the plan.
Session phases
A session is not uniform. Order flow changes with the time of day. Typical phases for a European share or index are:
- Opening phase (first 30–60 minutes after the open): overnight news and orders from the opening auction are processed. Ranges are often wide and spreads can be wider at the very start.
- Late morning: moves often slow down as the first wave of orders is completed.
- Midday: often the quietest period, with smaller ranges and more false breakouts.
- US data and US open: US economic reports (often 14:30 German time) and the US open (normally 15:30 German time) frequently bring new activity to European markets too.
- Closing phase: positions are adjusted before the closing auction; activity can rise again.
These are common observations, not rules. The pattern differs between instruments and between days, so measure it yourself.
Your volatility profile
A volatility profile is the average range of each time block of the session, calculated from your own chart history. Take at least 20 recent sessions. For each 30-minute block, note the high minus the low and calculate the average. The result tells you how large a "normal" move is at each time, and therefore how wide a sensible stop is.
Because the spread usually stays similar while the range shrinks, the cost in R rises in quiet phases: a 1-point spread is small against a 20-point stop, but large against a 6-point stop.
Worked example
Hypothetical example: Clara trades an index CFD worth €1 per point with a 1.0-point spread. She measured these average 30-minute ranges over 20 hypothetical sessions. She sets her stop at half of the average 30-minute range of the phase. Her risk budget is €100. Financing costs and taxes are excluded.
| Phase (German time) | Average 30-min range | Stop (half range) | Size (€100 ÷ stop) | Spread in R |
|---|---|---|---|---|
| 9:00–9:30 | 40 points | 20 points | 5 units | 1 ÷ 20 = 0.05R |
| 12:00–14:00 | 12 points | 6 points | 16 units | 1 ÷ 6 = 0.17R |
| 15:30–16:00 | 30 points | 15 points | 6 units | 1 ÷ 15 = 0.07R |
- Midday size: €100 ÷ 6 = 16.7 units, rounded down to 16 units, so the planned risk is 16 × 6 = €96.
- Open: 5 units × 20 points = €100 risk; US open: 6 units × 15 points = €90 (6.67 rounded down to 6).
- The euro risk is the same, but at midday the spread costs 0.17R per trade, more than three times the 0.05R at the open.
Conclusion: Clara's midday trades need a much higher win rate or larger targets to pay for the same spread. She decides to trade mainly in the opening phase and around the US open.
Bars per session for her Xetra chart: 510 ÷ 1 = 510 one-minute bars, 510 ÷ 5 = 102 five-minute bars, 510 ÷ 15 = 34 fifteen-minute bars.
Common mistake
Practice activity
On paper: (a) How many 1-, 5- and 15-minute bars does the US regular session (9:30–16:00 New York time) contain? (b) Your spread is 1.2 points. Calculate the spread in R for a 24-point stop and for an 8-point stop. (c) Which phase is cheaper to trade?
Show solution
(a) 390 minutes: 390 one-minute bars, 390 ÷ 5 = 78 five-minute bars, 390 ÷ 15 = 26 fifteen-minute bars.
(b) 1.2 ÷ 24 = 0.05R; 1.2 ÷ 8 = 0.15R.
(c) The phase with the 24-point stop: the same spread costs one third as much in R.
Limitations: averages hide very quiet and very busy days; news days can have ranges several times the average, and spreads can widen at the same time.
Key takeaways
- Use one fixed pair of timeframes: a context chart and an execution chart.
- Sessions have phases; the open and the US open are often more active than midday, but measure it yourself.
- Build a volatility profile from at least 20 sessions and set stops per phase.
- Tight stops in quiet phases make costs in R larger.
Next step
In the next lesson, you will learn two reference tools that many intraday traders watch: VWAP and the opening range.
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