Trends/Support and resistance

Round-number levels

Price levels like 50, 100 or 1,000 that many traders and orders cluster around, because they are easy to remember.

Support and resistanceBest on 6M, 1Y, 3YAlso called psychological levels, big figures

Illustration of the round-number levels shape. It is a sketch, not real price data.

What it shows

Round numbers are easy to say and easy to set orders at. That is why prices sometimes pause near them. The level has no special meaning except that people choose it.

Our code lists the round numbers near the current price range and counts how often price turned within a small distance of each one.

How we find it

The same code that draws it on your chart follows these steps, with the same result every time.

Choose a round step from the price range (for example 5, 10, 50, 100).
List round levels that fall inside the visible price range.
Count the bars where price reversed within 0.5% of each level.
Show levels that had at least 2 reversals.

Starting values: Step depends on price (about 5% of price, rounded); Reversal distance 0.5% of price; Minimum reversals 2. These are proposed and will be tuned on real price data before launch.

How to read it

Gold lines are round numbers.
Dots show where price turned close to a line.
A level with no dots is shown only if it is the nearest round number.

Status labels you may see

Label	What it means
Near a round number	Within 1% of a level.
Between levels	Not near any listed level.
Closed through	Last close crossed a level.

What cancels it

There is nothing to cancel. A level stops being shown when no reversals are found.

What traders check next

Whether the level also lines up with a swing high or low.
How many times price turned there.
Whether orders cluster there, which our data does not show.

Limits

The effect is modest and uneven.
Not all round numbers matter equally.
Cheap and expensive stocks use different steps.

Try it in forecastviz

Open any ticker and choose Support and resistance → Round-number levels in the left menu.
Switch between 6M, 1Y, 3Y to see how the picture changes.
Compare with Horizontal support and Horizontal resistance on the same chart.

Open on a ticker

Questions

Why would round numbers matter?

People place orders at them, so some trading happens there. That is a habit, not a rule.

Is this proven?

Studies find clustering in some markets and not others. We do not claim a size for the effect.