# Zeiierman Bands

Asymmetric volatility envelope with adaptive liquidity and mean-reverting regime test.

Canonical: https://prismaticalgos.com/compendium/algo/2440-zeiierman-bands
Record ID: 2440
Catalog rank: 286 (reading order, not performance)
Snapshot: 2026-10-31 15:46 UTC
Family: Trend Following & Directional (A)
Source: https://www.prorealcode.com/prorealtime-indicators/zeiierman-bands-an-asymmetric-volatility-envelope/
Evidence label (unverified): source_code

## Scope and limitations

These are machine-extracted research records, not verified trading systems. Catalog rank measures specification detail and claimed evidence, not profitability. The catalog extraction pipeline did not independently backtest these records. Its separate selected testing ledger does not validate the wider corpus. Rules, labels and parameters can be incomplete or wrong; consult the original source and its reuse terms.

No endorsement, ownership claim or source-code reuse permission is implied.

## Extraction warnings

Signal warnings: TIME-ONLY ENTRY: the entry conditions reference only clock time or session, with no market condition. This opens positions on a schedule.
Opacity warnings: UNDEFINED ENTRY TERM: the entry conditions are prose naming a concept with no numeric definition, so two readers would implement them differently. Advisory only -- this does not affect the score.
Build warnings: DAILY_LOW_COUNT: daily-or-slower timeframe on a single instrument. Expect well under 100 trades in five years, so a backtest will rarely reach statistical significance on its own.

## Recorded profile

- symbols: any
- timeframes: daily
- sessions: any
- market_regime: any

## Indicators

- EMA: {"period": 20}; applied to: close

## Recorded long-entry rules

- zScore > -0.75 and zScore[1] <= -0.75

## Recorded short-entry rules

- zScore < 0.75 and zScore[1] >= 0.75

## Recorded exit rules

- cross through the inner band on the same side

## Recorded filters

- mean-reverting regime test

## Risk controls

- Stop loss: not specified
- Take profit: not specified
- Position sizing: not specified