> For the complete documentation index, see [llms.txt](https://docs.bigbeluga.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bigbeluga.org/main-toolkits/nautilus-oscillator-pro-tm/volume-flow.md).

# Volume Flow

VolumeFlow (CVD) Histogram is a sub-pane technical indicator that visually maps the net institutional buying and selling pressure behind price action. 

<figure><img src="/assets/3866dea8d400247c5ccdf70d8525dc6977583c1f61af1cc980c5f6bddcee9e64.png" alt=""><figcaption></figcaption></figure>

By converting raw Cumulative Volume Delta into a responsive oscillator, it reveals hidden accumulation and distribution phases that traditional volume bars completely miss.

#### How to Read VolumeFlow

The indicator oscillates around a baseline, separating bullish and bearish control:

* Above 0 Line (Green Waves): Dominant aggressive buying pressure.
  * Bright Green: Fast volume expansion; strong bullish momentum.
  * Dark Green: Buying pressure is cooling off.
* Below 0 Line (Magenta Waves): Dominant aggressive selling pressure.

  * Bright Magenta: Fast volume expansion; strong bearish momentum.
  * Dark Magenta: Selling pressure is cooling off.

  <figure><img src="/assets/dbc0cd8fc45c21fe9403053e22e3323292ced59861b2beaa176081ad2cde95d7.png" alt=""><figcaption></figcaption></figure>

### Divergence

The system detects both bullish and bearish divergences between price and the VolumeFlow oscillator. Divergences highlight weakening momentum and potential reversal points.

<figure><img src="/assets/a44a771a1c6dfe61a23194ae72e9c9517396bd160872ef5653138d380e23dc7c.png" alt=""><figcaption></figcaption></figure>

#### Bearish Divergence

{% hint style="info" %}
Triggered when: Price forms a higher high, but VolumeFlow forms a lower high.
{% endhint %}

Interpretation:

* Buying pressure is fading even as price pushes higher.
* Suggests distribution or weakening bullish momentum.
* Often appears before short-term tops or trend pullbacks.

#### Bullish Divergence

{% hint style="info" %}
Triggered when: Price forms a lower low, but VolumeFlow forms a higher low.
{% endhint %}

Interpretation:

* Selling pressure is fading even as price pushes lower.
* Suggests accumulation or weakening bearish momentum.
* Often appears before short-term bottoms or trend reversals.

{% hint style="info" %}
These divergences are plotted visually on the oscillator, making it easy to identify momentum exhaustion zones.
{% endhint %}