ATR, a figure that measures how much a stock price fluctuates.
It is an indicator that shows the range of recent price movements, not whether it will rise or fall.
Table of contents
Remember this first
First, 3 things to remember
- 1ATR is the average of recent price volatility.
- 2It also reflects the gap from the previous day's price.
- 3Even with the same ATR, the perceived magnitude varies depending on the stock price.
It is a tool to see if there has been a significant movement.
ATR is a number that averages how much the price has moved significantly in recent times. It is not an indicator that tells you the direction. Both days with large gains and days with large losses can increase the ATR.
It considers not only the difference between the daily high and low but also the gap from the previous candle's closing price. If it closed at 10 dollars yesterday and moves between 11 and 12 dollars today, it can reflect a movement wider than the 1 dollar high-low difference.
0.5 KRW is not the same magnitude for all stocks.
For a 5 dollar stock, 0.5 dollars is 10%. For a 50 dollar stock, 0.5 dollars is 1%. Even if the ATR number is the same, how large it is relative to the stock price differs.
It is easier to compare if you look at the ratio by dividing by the stock price as shown below. Also, check if it was calculated using the same candle period and timeframe.
| Price | ATR | Relative to price |
|---|---|---|
| $5 | $0.50 | 10% |
| $50 | $0.50 | 1% |
The average is not the maximum movement for tomorrow.
Just because it moved 0.5 dollars on average does not mean it will move exactly 0.5 dollar tomorrow. If sudden news breaks, it could move much more significantly.
Do not view ATR as a stop-loss limit or a guarantee of the next price. Initially, use it to observe whether the fluctuations have become larger than usual.
You should not make such assumptions
“If the ATR is 1 dollar, does it only move a maximum of 1 dollar per day?”
Average movement is not maximum movement. If news breaks, it can move much more than before.
Check what you have read.
- Is it the ATR for the same period?
- How large is the number relative to the stock price?
- Did you mistake it for direction or maximum loss?
Apply what you read to the actual screen
Try it on WAPE
Source and scope of verification
Reviewed · Version 2
- Average True RangeNew window
Fidelity Investments · Verify 2026-10-20
Volatility reflecting gaps; distinction from direction - Types of OrdersNew window
SEC Investor.gov · Verify 2026-10-20
Difference between market price and last traded price · Price conditions for limit orders
This is educational material for observation and information comprehension. Hypothetical examples do not represent actual stocks or performance and do not provide buy or sell recommendations.