LINK BINANCE Futures 4H Range-Bound Mean-Reversion Long-Only with Volatility-Compression Regime Filter (3-Parameter, Chop-Optimized, Explicit Anti-Breakout Mechanism Class)

A long-only single-instrument MEAN-REVERSION strategy on LINKUSDT.BINANCE perpetual futures using 4-HOUR bars and OHLCV-only data, explicitly designed for the 2024-2026 CHOP REGIME where the analyst-confirmed 'Donchian-with-trend mechanism class is system-wide regime-decayed' (4 abandons this session: BTC, AVAX, XRP, SOL). This proposal is the STRUCTURAL OPPOSITE of those failures: instead of buying breakouts (which fail in chop), it buys at the low end of an established range with a volatility-compression regime filter that ONLY trades in confirmed low-vol range-bound markets. Mechanism: (1) Detect range-bound regime via volatility compression: 20-bar ATR <= 200-bar mean ATR (current short-term vol below long-term average — confirms market is in chop, not trending). (2) Identify range: rolling 50-bar high and low (excluding current bar). (3) Enter long when close is within entry_position_pct (15%) of range_low AND in low-vol regime. (4) Exit at range midpoint OR hard time stop OR range-break stop. STRATEGIC RATIONALE: (1) EXPLICIT MECHANISM-CLASS COUNTER-POSITION: the latest SOL HL Donchian failure note explicitly identifies 4 Donchian/breakout failures and recommends 'BLOCK further Donchian-breakout hypotheses'. This proposal is structurally OPPOSITE — it profits FROM chop by trading mean-reversion within ranges, with the regime filter ensuring entries only occur in confirmed chop. The 2024-2026 regime hostility to breakouts is direct evidence of FAVORABLE conditions for range MR. (2) DIRECT IMPLEMENTATION OF ANALYST RECOMMENDATION: 'Future BTC Donchian hypotheses should add a regime filter — (a) volatility regime gate (only trade in high-vol periods)'. Mean-reversion strategies need the INVERSE regime gate (low-vol periods), which this hypothesis implements via the 20-bar/200-bar ATR ratio. (3) ASSET CHOICE — LINK: avoids ALL deprecated/moratorium assets (BNB post-2024 moratorium; AVAX multiple failures including Skewness, Trend-Pullback, Donchian Bull Flag; XRP Premium MR + Donchian Bull Flag failures; SOL Donchian failure; BTC OI Surge + Donchian + Volume Surge failures; ETH Connors Down-Day failure). LINK has the POSITIVE SIBLING SIGNAL: LinkEthRatioZscoreMRLongSpread reached risk_review at Sharpe 0.68 demonstrating LINK exhibits mean-reversion behavior at sub-daily timeframes. The single-asset 4H mean-reversion proposal here is methodologically distinct (range-bound MR vs cointegration MR) but draws on the same underlying LINK behavior. (4) ITERATION-SAFE: only 3 hypothesis-declared tunable parameters (range_lookback, entry_position_pct, position_pct). NO stop_loss parameter, NO take_profit parameter — explicit fix for LINK/ETH iter-2 optimizer-reversal failure mode. Exits are deterministic: range midpoint OR 48-bar time stop OR 4% range-break (all hard-coded). The optimizer cannot push extreme parameter values because there are no risk-tunable parameters. (5) FEE MATH EXPLICITLY VIABLE: typical LINK 4H 50-bar range = 8-15%. Entry at 15% of range from low → midpoint (50%) = 35% of range traversed = ~3-5% gross move per winner. At 30% position sizing: gross per winning trade = 0.9-1.5%. Net of 0.10% RT Binance USD-M fees = 0.8-1.4% per winner. At 55-65% win rate (mean reversion typically wins more than loses by win rate, loses more by avg loss size due to range-break stops): EV = 0.60 × 1.1% − 0.40 × 1.0% = 0.66% − 0.40% = +0.26% per trade NET expected value, comfortably above 0.15% futures viability floor. (6) AVOIDS ALL SYSTEM-WIDE FAILURE PATTERNS: NOT breakout (Donchian, Keltner, range breakout all deprecated); NOT funding/premium/OI/skewness signals; NOT volume-surge daily; NOT pair MR at 1H (LINK/ETH 1H deprecated); NOT cross-venue (single venue); NOT BINANCE_CM (data infrastructure gap); NOT Hyperliquid (analyst says venue diversification thesis falsified for trend mechanism — and this is MR, not trend); NOT Connors down-day (deprecated for daily); NOT Bollinger MR (cliff-prone on BTC 4H — but this is RANGE MR, not BB MR, mechanically different signal). (7) HOLDOUT-FRIENDLY DESIGN: the SOL Donchian failure note emphasizes 'HOLDOUT GATE IS THE STRONGEST PREDICTOR — across the 4 Donchian failures, walk-forward LOOKED acceptable but holdout caught all 4'. Range MR in chop regimes is HOLDOUT-FAVORABLE because the 2024-2026 holdout window is precisely the chop regime where this mechanism has edge — the same regime decay that hurt breakouts HELPS range MR.