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Historical market days that resemble our current conditions have typically led to forward strength. Based on the 3-day and 5-day ratings, we’re seeing a strong push into the green, indicating that the matched historical scenarios generally had a bullish bias. Take the 3 day holding period as an example:
From these figures, we calculate the Profit Factor, which compares the total gains from winning trades to the total losses from losing trades. In this case, the Profit Factor is 2.35, meaning the "pile" of money from winners was 2.35 times larger than the "pile" from losers. Profit Factor is one statistical measure of a strategy or a portfolio. As a system developer who has analyzed billions and billions of historical price bars (open, high, low, close, volume), across every timeframe from sub minute to daily and above, and across stocks, commodities, and futures, I’ve noticed a recurring flaw in many traders: they don’t think in probabilities. Worse, they often don’t know how to combine those probabilities into a coherent framework. This is the core insight I want readers to grasp for now: A strong green signal doesn’t guarantee the market will move up. It means that, relative to an average day in a similar market regime, the odds are skewed more favorably toward the upside. It’s about leaning into statistical edges, not certainties. Think in probabilities. Size in probabilities. Over time, these discussions will uncover specific trading edges and strategic insights. We'll also explore how to integrate a diverse set of systems into a unified, resilient portfolio, one that's built for durability across market conditions. Have a Great Night! DJ
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Dave JohnsonI'm Dave Johnson, a former investment advisor and quantitative system developer with over 30 years of experience building and trading mechanical systems. These days I focus on rules-based research, honest backtests, and sharing what the data actually shows. Archives
June 2026
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