volume study guide
Volume indicators do not measure one thing. A bar histogram, moving average, relative-volume ratio, price profile, and cumulative volume index transform activity in different ways.
Source review completed
Prompt brief
ThinkScript · one source file
Example request
Create a thinkorswim lower study with volume bars, a configurable 30-bar volume average, a relative-volume label, and an alert when volume first exceeds twice the average while close is above the prior high.
Choose a thinkorswim volume indicator from the question you need to answer. Use bar volume for activity by time, VolumeAvg for comparison with a recent baseline, RelativeVolumeStDev for standardized activity, VolumeProfile for activity by price, and cumulative indexes for a specified directional rule. No single volume indicator is best across all uses.
Reference points
A search for volume index or vol index may mean a cumulative price-volume study, a relative-volume ratio, or a market volatility index. These are unrelated calculations. Identify the formula or official study name before selecting or generating code.
The built-in CumulativeVolumeIndex accumulates advancing-stock volume minus declining-stock volume for a selected exchange. It is a market-breadth series, not volume signed by the current stock's up and down bars. For RVOL, instead specify the numerator and denominator.
A custom volume study can combine a moving baseline, thresholds, bar colors, labels, and alerts. The specification should say which bars enter the average, how sessions reset, and what happens when volume is missing or zero.
Test the output on multiple symbol types. An apparently useful formula on liquid equities may behave differently on products whose volume field has another meaning or coverage.
VolumeAvg plots the selected symbol's volume and its simple moving average. CumulativeVolumeIndex instead compares groups of advancing and declining stocks. If hypothetical advancing volume is 80 million and declining volume is 50 million, the CVI increment is +30 million, regardless of whether your charted stock rose.
For a custom activity alert, choose whether the average includes the current bar. Comparing a growing live bar with completed-bar averages is different from comparing completed bars; state which calculation the threshold uses.
Pineify thinkScript workflow
Give the Coding Agent the formula, inputs, plots, alerts, and edge cases. It returns one editable study or strategy file and keeps focused revisions in the same code artifact.
thinkorswim documents a RelativeVolumeStDev study and exposes bar volume to custom thinkScript. A custom RVOL ratio can divide current volume by an average baseline, but the denominator must be specified. A simple recent-bar average and a time-of-day seasonal average answer different questions.
Read guideAdd VolumeProfile from the studies library, then set the profile period, price-per-row mode, row height, value-area percentage, expansion behavior, and plot visibility. The study distributes volume across price rows for the selected profile interval. It is different from volume by time bar and from bid-ask delta.
Read guideStandard thinkScript bar volume is not, by itself, a historical bid-ask aggressor split. A script that assigns all volume on an up bar to buying and all volume on a down bar to selling is a price-direction proxy, not true trade-classified CVD. Label such approximations plainly and do not compare them as equivalent to an order-flow data product.
Read guideLast verified:
Pineify provides information and code-generation assistance, not investment advice. Generated scripts, strategy reports, simulations, and historical examples cannot predict prices or guarantee returns. Review every script and test it in its target platform before relying on its output.
There is no general best choice. Use bar volume, a baseline comparison, relative volume, volume profile, or a cumulative index according to the question and data you need.
It is a volume-based study, but it groups activity by price row instead of chart time bar. This makes its output different from a volume histogram or moving average.
Yes. Define the exact volume baseline, price condition, session, output, and alert behavior. Pineify can generate an editable thinkScript study for platform review.
Generate one editable thinkScript study or strategy, inspect the source, request focused changes, and complete the final check in thinkorswim.
Pineify generates source code. Review its syntax and chart behavior in thinkorswim before use.
