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lib/volume/aobv/Aobv.md
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# AOBV: Archer On-Balance Volume
| Property | Value |
| ---------------- | -------------------------------- |
| **Category** | Volume |
| **Inputs** | OHLCV bar (TBar) |
| **Parameters** | None |
| **Outputs** | Multiple series (LastFast, LastSlow) |
| **Output range** | Unbounded |
| **Warmup** | `> SlowPeriod` bars |
### TL;DR
- Archer On-Balance Volume (AOBV) applies dual exponential smoothing to the classic On-Balance Volume indicator, creating a responsive yet noise-filt...
- No configurable parameters; computation is stateless per bar.
- Output range: Unbounded.
- Requires `> SlowPeriod` bars of warmup before first valid output (IsHot = true).
- Validated against TA-Lib, Skender, and Tulip reference implementations where available.
> "OBV told me what was happening. AOBV told me when to act." — Adapted trader wisdom
Archer On-Balance Volume (AOBV) applies dual exponential smoothing to the classic On-Balance Volume indicator, creating a responsive yet noise-filtered momentum signal. The intersection of fast and slow EMAs provides actionable crossover signals while preserving OBV's core insight: volume precedes price.