All-time high and low
The highest and lowest prices the stock has ever traded at, within the history we have.
What it shows
An all-time high is the highest price on record. Above it there are no old prices, so no old levels to react to. An all-time low is the lowest price on record.
We use the full history our data source provides. For stocks that have been around a long time, that may not go back to the beginning.
How we find it
The same code that draws it on your chart follows these steps, with the same result every time.
- Take the highest high and the lowest low of the whole history.
- Draw a line at each.
- Show the dates.
- Show how far the last close is from each, in percent.
Starting values: Window full history available; Adjustment split and dividend adjusted. These are proposed and will be tuned on real price data before launch.
How to read it
- The red line is the record high and the teal line is the record low.
- The distance from the high is a measure of how far price has fallen from its best.
- A new record high has no older resistance above it.
Status labels you may see
| Label | What it means |
|---|---|
| At an all-time high | The last close is within 1% of the record. |
| Below the record high | More than 1% below. |
| Near the all-time low | Within 10% of the record low. |
What cancels it
Nothing cancels it. A new extreme moves the line.
What traders check next
- How long ago the high was set.
- Whether the data covers the whole history.
- The drawdown from the high.
Limits
- Adjusted data can change old highs and lows.
- A short history gives a weak record.
- A new high says nothing certain about what follows.
Try it in forecastviz
- Open any ticker and choose Support and resistance → All-time high and low in the left menu.
- Switch between 5Y, 10Y to see how the picture changes.
- Compare with 52-week high and low and Prior swing highs and lows on the same chart.
Questions
Do prices adjust for splits?
Yes. We use split-adjusted prices so earlier prices are comparable.
Why does the high change with data providers?
Providers adjust for dividends differently.
Related trends
Further reading
- Murphy, Technical Analysis of the Financial Markets
- Edwards and Magee, Technical Analysis of Stock Trends
Educational only. Not financial advice, and not a price forecast. Charts are drawn by code from past price data, which may be delayed.