OPEN-SOURCE SCRIPT
Updated Sonarlab - Psych/Whole Number Levels

Have you ever noticed that prices seem to stick to certain “round numbers” like $1250, $1300, or $1350? It’s not just your imagination — these round numbers can actually act as psychological levels in the market, influencing trader behavior and shaping price action.
But why do traders care so much about these round numbers? It all comes down to our psychological wiring. Humans are naturally drawn to symmetry and simplicity, and round numbers offer a nice, neat way to measure price levels. Plus, these levels often coincide with important milestones or historical levels of support and resistance, giving them even more psychological weight.
To help you take advantage of these psychological levels in your trading, we’ve created a free TradingView indicator that automatically plots round numbers on your chart. Whether you’re a seasoned trader or just starting out, this indicator can give you a valuable edge in the market.
Here’s how the Indicator works:
1. Install the indicator on your TradingView chart. You can find it in the public library by searching for “Round Numbers Indicator”.
2. Select your preferred round numbers and customize the appearance of the indicator to fit your chart. The default settings are already set good.
3. Watch as the round numbers dynamically adjust to the current price action, providing you with a clear view of the market’s psychological levels.
But why do traders care so much about these round numbers? It all comes down to our psychological wiring. Humans are naturally drawn to symmetry and simplicity, and round numbers offer a nice, neat way to measure price levels. Plus, these levels often coincide with important milestones or historical levels of support and resistance, giving them even more psychological weight.
To help you take advantage of these psychological levels in your trading, we’ve created a free TradingView indicator that automatically plots round numbers on your chart. Whether you’re a seasoned trader or just starting out, this indicator can give you a valuable edge in the market.
Here’s how the Indicator works:
1. Install the indicator on your TradingView chart. You can find it in the public library by searching for “Round Numbers Indicator”.
2. Select your preferred round numbers and customize the appearance of the indicator to fit your chart. The default settings are already set good.
3. Watch as the round numbers dynamically adjust to the current price action, providing you with a clear view of the market’s psychological levels.
Release Notes
- Added alertsRelease Notes
- Minor bug fixesOpen-source script
In true TradingView spirit, the creator of this script has made it open-source, so that traders can review and verify its functionality. Kudos to the author! While you can use it for free, remember that republishing the code is subject to our House Rules.
Disclaimer
The information and publications are not meant to be, and do not constitute, financial, investment, trading, or other types of advice or recommendations supplied or endorsed by TradingView. Read more in the Terms of Use.
Open-source script
In true TradingView spirit, the creator of this script has made it open-source, so that traders can review and verify its functionality. Kudos to the author! While you can use it for free, remember that republishing the code is subject to our House Rules.
Disclaimer
The information and publications are not meant to be, and do not constitute, financial, investment, trading, or other types of advice or recommendations supplied or endorsed by TradingView. Read more in the Terms of Use.