What to Check When Daily and Weekly Charts Point in Opposite Directions
A weekly candle aggregates the week's open, high, low, and close rather than averaging daily candles. See why daily and weekly directions can differ and how unfinished weekly candles distort comparisons.
Daily and weekly candles summarize the same trading record over different time intervals, so different shapes are not contradictory. A weekly candle's body compares the beginning and end of the week and can point in a different direction from the final daily candle. If the current week has not ended, do not compare its candle on the same terms as a completed weekly candle.
A weekly candle is not the average of five daily candles
A weekly candle uses the open of the week's first trading session and the close of its last, while its high and low show the extremes over that period. Holidays can change the number of trading days included. Neither the average daily body length nor a simple sum of daily returns gives the weekly return. Compressing the week into one candle removes sequence information, such as which days produced the high and low. To understand the date of an event, examine daily candles or shorter-timeframe records.
Use longer timeframes for context and shorter ones for detail
A weekly chart showing direction over several months and a daily chart showing reactions over recent days answer different questions. You can assign them different roles—for example, defining key price zones on the weekly chart and using the daily chart to examine the path into those zones. But because both derive from the same price data, agreement does not provide two independent pieces of evidence. If a plan uses daily conditions and you switch to a weekly rationale after those conditions fail, the evaluation criteria become unclear. If a change is needed, record the reason and the date of the change.
Label volume for an unfinished week separately
During the week, the current weekly candle's close is not final, and its high and low can still change. Comparing two days of volume so far with a full previous week can make trading appear to have collapsed. Compare the same number of elapsed trading days or label the current figure as provisional before the close. Check for differences in weekly boundaries, time zones, and the scope of regular-session trading. A chart captured on a particular Korean date may correspond to a different trading date in the overseas market. Recording the local date of the last completed candle makes later review easier.
Worked example
Hypothetical example: If Monday's open is 10,000 won, the week's high is 10,800 won, its low is 9,700 won, and Friday's close is 10,300 won, the weekly candle has a bullish body of 300 won. Friday alone may show a bearish candle, falling from an open of 10,600 won to 10,300 won. The change from the week's first open is 3%, while the change from Friday's open is approximately −2.83%. Both records can be true because their starting points differ.
What to check
- Check which trading days and sessions the weekly candle includes.
- Distinguish weekly extremes from the order in which they occurred across daily candles.
- Indicate whether the current weekly candle is complete.
- If you replace daily conditions with weekly ones, record why the assessment changed.
Sources and primary materials
This is educational material about research methods. For an actual company decision, verify the filings and primary sources for the relevant period.