Studies · Momentum
Rate of Change (ROC)
percentChange · Percent change from n bars ago — the rate of change
Drawn in its own panelReads one column (close here)Guide lines at 0
Hover the chart to read values · practice data: a seeded random walk with no overnight gaps
What it measures
The percentage change from N bars ago. Also called ROC. With the default of 1 it is simply the daily return.
How traders use it
- Comparing momentum across instruments, since it is a percentage.
- Zero-line crossings and divergence, as with Momentum.
- Extreme readings compared with the instrument’s own history can flag stretched moves.
Parameters
| Name | Value | Default | Allowed | What it does |
|---|---|---|---|---|
| periods | 1 | ≥ 1 usual 1–20 | How many bars back to compare against. |