Direct answer
On a forex bar chart, a “fixed price” usually means the plotted price value for a specific bar/candle after that bar is defined by its timeframe. It does not mean the market price is permanently locked; it means the chart shows a value (for example, open, high, low, or close) that is determined for that bar’s time window.
Because chart prices depend on the selected timeframe and on how the chart provider compiles data, the “fixed” value you see is a representation of that bar, not a guarantee about what other platforms or the live feed are showing at the same instant.
How it works on a bar chart
A bar chart groups trading activity into time intervals. For each interval, the chart calculates and displays one or more standardized price points:
- Open: the first price of the interval.
- High: the highest price reached during the interval.
- Low: the lowest price reached during the interval.
- Close: the last price of the interval.
When people say “fixed” in this context, they typically refer to one of these plotted points that remains stable once the interval ends (for completed bars). During an active, still-forming bar, values such as “high” and “close” can change as new price updates arrive. After the timeframe completes, the bar’s plotted values become fixed on your chart.
Which “fixed price” you mean matters
The phrase “fixed price” is not a universal technical term in forex charting. On practice, it often refers to the value shown by the bar for a chosen measure:
- If the chart shows close, then the “fixed price” corresponds to the bar’s close for that timeframe.
- If the chart shows high/low, then the “fixed price” corresponds to the bar’s extremes for that timeframe.
- If a line is drawn at a level, the “fixed price” can mean a static horizontal level you created (for example, a support/resistance line), which stays constant regardless of live price movement.
Example checks you can do
You can verify what “fixed price” means on your own chart by comparing how the chart behaves:
- Change the timeframe (for example, from 1 minute to 1 hour). The bars will be rebuilt from different time windows, so open/high/low/close values can change.
- Watch an in-progress bar. While the current interval is still forming, the close (and sometimes high/low) can update, so it is not “fixed” yet.
- Compare completed bars vs. the current bar. Completed bars typically stop changing because the interval has ended.
- Switch chart data sources (if available). Different providers or compilation methods can yield slightly different OHLC values even for the same symbol and timeframe.
Limitations and uncertainty
- No single universal definition: “Fixed price” is commonly used informally; it depends on which plotted point (open, high, low, close) or which drawn line you are looking at.
- Timeframe dependence: Bar values represent a time window, so they can be very different from the live tick price.
- Data-source differences: Charts can be based on compiled data, which can differ across platforms.
- No certainty about other moments: A fixed value on the chart describes that bar’s constructed summary, not what the price was at every moment inside the interval.
If you tell me which chart element you mean (open/high/low/close or a drawn horizontal level) and the timeframe you use, the explanation can be narrowed to that specific “fixed” value.