Thesis
Channel-pullback is a mean-reversion-within-trend system. It targets confirmed uptrends — stocks whose price has established a rising regression channel — and initiates buys only when price retreats to the lower band or a coincident volume-support zone. The exit trigger is the upper channel boundary or a defined resistance level. The 24-name universe spans large-cap tech, financials, healthcare, consumer staples, and energy — limiting single-sector concentration without adding small-cap liquidity risk.
Portfolio Snapshot & Recent Trades
As of July 7, 2026, the paper portfolio sits at $10,313.52 with $770.62 in idle cash. Trading has been quiet: five consecutive sessions (June 30 – July 7) produced zero executions, each rejecting one signal — conditions have not met the channel-floor confirmation threshold.
The last meaningful activity came on July 1: the strategy sold 7 shares of WMT at $108.53 and re-entered DIS with 19 shares at $96.32. That re-entry is textbook — the strategy had exited DIS at $103.99 on June 18 near the upper channel, and the subsequent pullback to $96.32 triggered a larger position rebuild, representing roughly a 7.4% round-trip channel width.
Earlier in June, a quick CAT round-trip (bought at $857.78, sold at $912.06 two days later) was offset by an MSFT position that moved against it (bought at $427.54, sold at $400.31 the following week). The pair illustrates the strategy's sub-40% win rate in practice: fewer, larger winners must offset more frequent small losses.
Cross-Validation: A Regime-Dependent Track Record
Over 451 days and 137 trades, the backtest returned 7.62% (CAGR ~4.19%) with a Sharpe of 0.40 and a peak drawdown of 14.83%. The four-fold walk-forward reveals sharp regime dependence:
| Fold | Period | Return | Sharpe | Max DD |
|---|---|---|---|---|
| 1 | Aug 2024 – Jan 2025 | +6.53% | 1.25 | 6.16% |
| 2 | Jan 2025 – Jul 2025 | −11.42% | −1.70 | 16.09% |
| 3 | Jul 2025 – Dec 2025 | +20.68% | 3.86 | 3.26% |
| 4 | Dec 2025 – May 2026 (OOS) | +3.63% | 0.74 | 8.44% |
Three of four folds were positive. Fold 3 is a standout (Sharpe 3.86, drawdown under 4%); Fold 2 is the red flag — a −11.42% loss and −1.70 Sharpe that strongly suggests the strategy struggles when the broader tape shifts into a sustained downtrend or high-volatility chop.
Formal validation did not pass. Across 7 parameter trials, the Deflated Sharpe Ratio (DSR) lands at 0.196 — well below the conventional 0.95 threshold. The Probabilistic Sharpe Ratio (PSR) of 0.702 provides only moderate confidence that the observed edge exceeds a benchmark Sharpe. The gap between PSR and DSR is the statistical fingerprint of parameter search: the strategy's best configuration may be partially fit to historical noise.
Strengths
- Interpretable logic — channel mechanics are grounded in established technical analysis, reducing black-box opacity and making signal failures diagnosable.
- OOS stability in Fold 4 — the most-recent out-of-sample period (+3.63%, Sharpe 0.74) shows the core signal has not fully decayed into the present.
- Liquid universe — 24 large-caps contain slippage risk and keep execution straightforward.
Risks & Watch Points
- Regime sensitivity — Fold 2 is a clear warning: this strategy needs a rising market to function. A market-regime gate (e.g., index trend filter) could reduce exposure during unfavorable conditions.
- Sub-40% win rate — the return profile is structurally dependent on average winners exceeding average losers; whipsaws near the upper channel or premature exits directly compress that edge.
- DSR flag — a Deflated Sharpe of 0.196 signals possible overfit across the 7-trial search space. Live performance in genuinely new market regimes will be the definitive test.
- Turnover — 2,311% annual turnover means friction matters; even at $1 per trade flat, real-world slippage on lower-volume sessions warrants ongoing monitoring.