The thesis
PanicFade v4 bets on a well-documented behavioural pattern: negative headline shocks are overreacted to and tend to revert toward fundamentals. Mechanically, it buys names hit by a sentiment reading below -0.4 that are also already oversold — RSI14 under 35 and trading below their 20-day moving average — and sizes into the fear. It exits on reversion (RSI14 back above 50, or price reclaiming the SMA20) and hard-stops on fresh lows amid continued negativity, treating that as a genuine fundamental break rather than noise.
The design leans on recent academic work, principally Sentiment Feedback in Equity Markets (arXiv:2509.11970, 2025) and a corroborating JRFM/MDPI study on stock-level investor sentiment. The universe is deliberately conservative: 24 mega-cap and large-cap names spanning tech, financials, healthcare, staples and energy — the kind of liquid businesses where 'panic' is more likely to be sentiment than solvency.
What the validation says
This is the strongest part of the story. Across four walk-forward folds from September 2021 to August 2026, all four were positive (1.6%, 3.88%, 10.14% and 21.7%), and the strategy's Probabilistic Sharpe Ratio of 0.985 is high even against 27 trials. Crucially, out-of-sample performance improved over time: the final fold posted a 21.7% return at a 2.44 Sharpe with a tiny 2.6% max drawdown. The full-sample backtest returned 37.93% over 1,233 days (6.79% CAGR) with a 62.88% win rate across 530 trades and a contained 9.3% max drawdown.
The headline overall Sharpe of 0.96 is respectable but not spectacular, and the Deflated Sharpe Ratio of 0.56 is a more sober number — a reminder that after adjusting for the search process, the edge is real but modest. Fold 1, spanning the 2022 bear market, managed only a 0.19 Sharpe; the approach clearly does better in recovering or ranging markets than in sustained sell-offs.
Recent activity
Live trading has been quiet and selective. Over the last week the book fired only occasionally — three executions on 21 September (buying HD and NKE, trimming WMT), one on 23 September (UNH) — with several scheduled runs executing nothing at all. That patience is by design: the entry gate is narrow.
The uncomfortable detail is the equity curve. The live paper account has hovered below its $10,000 stake all week, reading $9,922.84 on 25 September against roughly $5.7k in cash. It is a small deficit, but it means the live deployment has yet to reproduce the backtest's climb.
Balance sheet: strengths vs risks
Strengths: genuinely robust validation, positive across every fold, a sensible fundamentals-anchored exit, and a liquid universe that limits blow-up risk.
Risks: enormous 5,807% turnover means the edge must survive real friction; the modest DSR and sub-1.0 Sharpe leave little margin; the strategy is demonstrably weak in prolonged bear phases; and, most immediately, the live book is slightly underwater. PanicFade v4 has earned the right to run — but it still needs to prove on live capital what it has already proven in-sample.