# Hull Moving Average Envelope (HMAENVELOPE)

> QuantNexus indicator page for HMA envelope bands.

**Route**: `/quantnexus/indicators/hmaenvelope/`

## What It Does

HMAENVELOPE builds upper and lower bands around the Hull Moving Average using a percentage offset.

## Formula

`Upper = HMA * (1 + percent / 100)`  
`Lower = HMA * (1 - percent / 100)`

## Parameters

- `period` - default `20`
- `percent` - default `2.0`

## C++23 API

```cpp
#include <nonabt/indicators/hmaenvelope.hpp>
auto hmaEnv = std::make_unique<nonabt::HMAENVELOPE>(data().close(), 20, 2.0);
```

## Common Usage

- Use it to track trend with a channel.
- Combine with HMA slope for regime filtering.
- Useful for pullback and breakout setups.