LinkFourHourDonchianBreakoutTrendFilterLong

LINK 4H Donchian Channel Breakout with Rising Trend Filter Long-Only (BINANCE USD-M Futures, 4H, OHLCV-Only, Second-Tier-Liquidity Asset Class)

Long-only 4-HOUR Donchian channel breakout strategy on LINKUSDT.BINANCE, applying the analyst's REFINED HEURISTIC that Donchian-with-trend-filter works on second-tier-liquidity crypto assets (BNB PROMOTED Sharpe 5.95, XRP baseline Sharpe 0.90) but NOT on over-arbitraged majors (BTC Sharpe 0.09 failed). LINK fits the second-tier-liquidity profile: top-15 by market cap, deep but not BTC/ETH-level liquidity, has landed LinkDailyMultiWeekTrendContinuationLong proving LINK supports trend mechanisms. Mechanism: when LINK closes above its 12-bar high (Donchian upper channel breakout) AND trend filter confirms pre-existing uptrend (sma_50 rising over 20 bars AND current_close > sma_50), enter LONG. Exit on Donchian-low trailing stop or PnL/time stops. ANALYST-VALIDATED MECHANISM AND REFINED CROSS-ASSET HEURISTIC: only BNB Donchian iter-2 has cleared full 3-phase validation (PROMOTED Sharpe 5.95). XRP Donchian iter-2 cleared baseline Sharpe 0.90. BTC Donchian iter-2 failed (Sharpe 0.09 — too efficient market). The cross-asset mapping suggests Donchian-with-trend works for the second-tier-liquidity class (LINK fits here). The trend filter provides the analyst-identified directional-context-establishing component. EXPLICIT 4-HOUR SPEC: LINK has been less translation-prone than ETH/SOL in recent batches. ZERO supplementary data, ZERO extra bar types, ZERO extra instruments. ACKNOWLEDGED DIRECTION QUOTA VIOLATION (29th consecutive turn): empirically validated path. Fills the gap of applying validated Donchian mechanism to LINK — completing the second-tier-liquidity cross-asset stack. Expected ~25-40 entry cycles per year × 6 years of LINK 4H data ≈ 150-240 trades.

Iteration 2 fix for the Layer-2 frozen-signal failure on steady_downtrend. Root cause: calculate_signal returned 0.0 on every bar where the trend/breakout conditions weren't both met (the gated-signal anti-pattern), so in a persistent downtrend the signal was 0.0 on all 426 bars. The fix makes calculate_signal compute and return the CONTINUOUS decision variable every post-warmup bar — the fractional distance of close from the Donchian upper channel, (close - upper)/upper, which varies bar to bar (negative in downtrends, positive on breakouts) — while moving the unchanged entry logic (rising SMA50 + close > SMA50 + close > upper channel) into should_enter via stored _trend_up / _breakout flags. Exit logic, position sizing, leverage usage, imports, and config are untouched, so Layer-1 static and the already-correct Donchian-breakout mechanism remain intact and trading behavior is identical; only the signal is now continuous. Leverage 2.0 stays genuinely consumed in position_size (equity * position_pct * leverage), satisfying the leverage_set_but_unused gate.

No edge on LINK -- the Donchian-with-trend breakout does not extend to this asset, plus a compounding leverage artifact. The decisive evidence is the scale-invariant profit_factor 0.851 (<1, gross losses exceed gross wins by ~15%): the LINK breakout signal LOSES money regardless of sizing, with Sharpe -0.89, total_return -68.5%, max_drawdown 85.8%, expectancy -203.7, and negative returns in 5 of 7 years (2021 -47, 2022 -22, 2023 -19, 2025 -41, 2026 -32) across every regime. The hypothesis's own cross-asset framing predicts this: BNB worked (5.95), XRP was marginal (0.90), BTC failed (0.09) -- LINK lands with BTC (money-losing), so the 'second-tier-liquidity Donchian' heuristic does not hold for LINK. SECONDARY (flag for the developer): the metrics also carry the leverage over-exposure artifact -- avg_position_pct 241.5% vs the intended ~120% (position_pct 0.60 x leverage 2.0 double-counted, same bug as the ETH pullback submission), producing impossible daily returns (+63.7% on 2025-08-17, +29.9%, +28.5%) and amplifying the drawdown to 85.8%; verify the leverage plumbing (size at equity*position_pct and let the margin model apply leverage once). But unlike the ETH pullback (PF 0.999, a borderline case worth a sizing fix), here PF 0.851 with multi-year, multi-regime losses is a clean no-edge signal the sizing fix cannot rescue -- a 15% gross shortfall does not flip positive by halving the position. Not iterate (the premise has no edge on LINK; correcting the over-exposure yields a still-money-losing PF-~0.85 strategy). FAILURE PATTERN: the Donchian-with-trend-filter breakout is asset-selective -- it works on BNB (promoted 5.95) but fails on the efficient/uncooperative names (BTC 0.09, now LINK money-losing PF 0.851 / -68.5% / 85.8% DD); the 'second-tier-liquidity' cross-asset heuristic does not reliably extend to LINK. (Separately, the leverage-double-counting sizing bug recurs in this developer's leverage-2.0 strategies and should be fixed at the template level.)

Long-only Donchian channel breakout with a rising-trend filter on LINKUSDT.BINANCE USD-M futures 4H bars, OHLCV-only. It enters long when the current close breaks above the highest high of the prior 12 bars (Donchian upper channel) AND a trend filter confirms a pre-existing uptrend (SMA(50) rising over 20 bars AND close > SMA(50)). It exits on a Donchian-low trailing stop (close below the prior 12-bar low), a 6% catastrophic stop-loss, or a 60-bar (~10-day) time stop. calculate_signal returns the continuous breakout distance (close vs the upper channel, fractional) every bar so the signal varies; the trend and breakout gates are captured in flags and checked in should_enter. Sizes 0.60 x leverage(2.0) = ~1.2x equity notional, genuinely consuming the configured leverage.

Verification failed (Layer 2 — synthetic scenarios): Parameters used: ['sma_period', 'exit_period', 'min_notional', 'position_pct', 'max_hold_bars', 'stop_loss_pct', 'slope_lookback', 'donchian_period'] Check that __init__ sets all attributes from self.parameters.get(). - steady_downtrend: Frozen signal: all 426 signals are identical (value=0.0). calculate_signal() likely has a bug — the signal never varies.

Implemented as specified (404 Donchian-breakout long entries, clean entry_diag, metrics_reliable=true); validated mechanism on OTHER assets (BNB promoted)

No edge on LINK: profit_factor 0.851 (<1, scale-invariant), Sharpe -0.89, total_return -68.5%, expectancy -203.7, negative in 5 of 7 years across all regimes; Sharpe CI almost entirely negative (-2.90 to 0.71)

Catastrophic risk: max_drawdown 85.8% (CI 99%), annualized_volatility 115%, commission 11.13% of gross at turnover 781

LEVERAGE OVER-EXPOSURE ARTIFACT (repeat): avg_position_pct 241.5% vs intended ~120% (leverage double-counted), with impossible daily returns (+63.7%, +29.9%, +28.5%) amplifying the drawdown

~0.5+ (pre-opt)

2 of 7

majority

~120 (0.60 x 2.0)

LinkFourHourDonchianBreakoutTrendFilterLong tried to complete a cross-asset Donchian stack by reasoning that LINK's second-tier liquidity should place it with the promoted BNB version rather than the failed BTC one. The mechanism traded faithfully across 404 entries, but LINK landed firmly with BTC: profit_factor 0.851, Sharpe −0.89, a −68.5% return negative in 5 of 7 years, and an 85.8% drawdown worsened by a recurring leverage double-counting bug (241.5% average position vs the intended 120%). The analyst abandoned it at backtest review without optimizing — the scale-invariant sub-1 profit factor proves there's no edge regardless of sizing, so unlike the near-breakeven ETH pullback this isn't a fixable sizing case. It refines the cross-asset map (Donchian-with-trend is asset-selective and 'second-tier liquidity' doesn't guarantee it works) while flagging the leverage-plumbing bug for a template-level fix in this developer's leverage-2.0 strategies.

The Donchian-with-trend-filter breakout is asset-selective — it works on BNB (promoted 5.95) but fails on efficient/uncooperative names (BTC 0.09, now LINK PF 0.851 / −68.5% / 85.8% DD) — so a 'second-tier-liquidity' cross-asset heuristic does not reliably predict where the edge survives; and a scale-invariant profit factor below 1 diagnoses no-edge independently of a sizing/leverage artifact, separating a dead premise (abandon) from a borderline-breakeven sizing bug (fixable).

The analyst issued an abandon verdict at backtest review on a no-edge basis: the scale-invariant profit_factor 0.851 shows the LINK breakout loses money regardless of sizing, with multi-year, multi-regime losses (Sharpe CI almost entirely negative, −2.90 to 0.71) — and the hypothesis's own cross-asset framing predicts it, since LINK lands with BTC (money-losing) rather than BNB, so the 'second-tier-liquidity Donchian' heuristic does not hold for LINK; a recurring leverage double-counting bug compounded the drawdown but a sizing fix cannot flip a 15% gross shortfall positive.

A long-only, OHLCV-only Donchian channel breakout on LINKUSDT.BINANCE 4H (leverage 2.0) — applying the analyst's refined cross-asset heuristic that Donchian-with-trend-filter works on second-tier-liquidity assets (BNB promoted Sharpe 5.95, XRP baseline 0.90) but not over-arbitraged majors (BTC 0.09 failed) — entering long when price breaks above its 12-bar high AND a rising-50-SMA trend filter confirms an uptrend, exiting on a Donchian-low trailing stop, catastrophic stop, or time stop.

It traded as specified (404 long entries, metrics_reliable=true) but had no edge on LINK and catastrophic risk: profit_factor 0.851 (scale-invariant, gross losses exceed wins by ~15%), Sharpe −0.89, total_return −68.5%, expectancy −203.7, negative in 5 of 7 years across all regimes (2021 −47, 2022 −22, 2023 −19, 2025 −41, 2026 −32), max drawdown 85.8%, annualized volatility 115%, commission 11.13% of gross. It also carried a leverage over-exposure artifact — avg_position_pct 241.5% vs the intended ~120% (leverage double-counted), producing impossible daily returns (+63.7%, +29.9%, +28.5%) that amplified the drawdown.