Article 14 — Regime Detection in Indian Markets: India VIX and ADX as Filters

Article 14 — Regime Detection in Indian Markets: India VIX and ADX as Filters


title: "Regime Detection in Indian Markets: India VIX and ADX as Filters"

description: "The simplest regime-filter framework that separates trending from ranging from stressed markets — with specific thresholds for Indian equities."

keyword: "regime detection india vix adx"

stage: 2


Premise. Most trading strategies work in one regime and fail in others. Regime detection is the filter that turns strategies on and off.

The 2-variable regime map

Combine ADX(14) on daily Nifty with India VIX:

ADX / VIXVIX < 12 (calm)VIX 12-18 (normal)VIX 18-25 (elevated)VIX > 25 (stressed)
ADX < 20 (ranging)Mean-reversion setupsMean-reversionReduce size; event riskPaper trade only
ADX 20-25 (borderline)MixedMixedReduce sizePaper trade only
ADX > 25 (trending)Trend-followingTrend-followingTrend-following reducedPaper trade only

The VIX Zone 4 rule

When India VIX crosses 25, stop live trading. Full stop. The data on Zone 4 regimes is unambiguous:

  • Correlations spike (diversification breaks)
  • Typical strategy edges invert (what was mean-reverting becomes trending and vice versa)
  • Retail traders are emotional and over-positioned (exactly when institutions are best positioned to take money from them)
  • Zone 4 duration historically 5-30 days

The expected-value calculation on "skip Zone 4 entirely" vs "trade Zone 4 with standard strategies" is dramatically in favour of skipping.

The ADX-25 threshold

ADX(14) above 25 indicates trending. Below 20 indicates ranging. The 20-25 zone is ambiguous; most professional traders treat it as "mixed" and reduce size.

  • Mean-reversion strategies (Bollinger reversals, RSI-2, opening-gap-fade) require ADX < 20
  • Trend-following strategies (20-EMA pullback, breakout continuation, ORB) require ADX > 25

Running a mean-reversion strategy in ADX > 25 is a documented way to lose money consistently. The regime filter is not optional.

Stage 2 Volume 3 connection

Stage 2 Volume 3 (Multi-Timeframe & Regime Filters) goes deep on this framework with additional filters (sector relative strength, FII/DII flow regimes, macro calendar awareness).


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