Announcing: BTS Heatmaps
Backtested Strategies announces BTS Heatmaps, interactive market seasonality research tools built from completed calendar-year price history. The heatmaps provide weekly views across U.S. Major Indexes, U.S. Sectors, U.S. Industry ETFs, International Country ETFs and selected stock universes, with a daily view for U.S. Major Indexes. BTS Strength/Weakness Zones are available in All Data views for eligible symbols across the heatmap family.
BTS Heatmaps make historical market seasonality easier to research by letting users compare market groups by the selected BTS period and evaluate patterns alongside supporting data depth and risk context.
The current lineup includes U.S. Major Indexes, U.S. Sectors, U.S. Industry ETFs, International Country ETFs, Dow Jones Industrial Stocks, Nasdaq-100 Stocks and S&P 100 Stocks.

What BTS Heatmaps include
BTS Heatmaps are designed to show more than one seasonal number. Instead of limiting users to a single average-return view, each heatmap lets users evaluate the same selected BTS period through multiple research lenses.
The eight heatmap metrics are:
- Average Return
- Median Return
- Positive Week Rate / Positive Day Rate
- Volatility
- Return / Volatility
- Sample Size
- Relative Return vs S&P 500
- Win Rate vs S&P 500
Together, the eight metrics show return magnitude, consistency, volatility and return per unit of volatility for each selected BTS period. They also show relative-return magnitude and win frequency versus the S&P 500, plus the sample size supporting each reading.
The heatmaps also include BTS Zones, a proprietary overlay that highlights All Data periods of unusual relative strength or weakness versus the S&P 500. The overlay separates those views into BTS Strength Zones and BTS Weakness Zones, giving users another way to flag periods for deeper review while keeping the core heatmap focused on historical research, not prediction.
Built for evidence-first seasonal research
BTS Heatmaps are built for evidence-first seasonal research. Strong colors and recurring patterns can help identify areas worth studying, but the platform is designed to keep those patterns connected to context: history range, Sample Size, volatility, relative performance and benchmark comparison.
Heatmap cells and BTS Zones are historical summaries, not forecasts, trading signals or trading recommendations.
Create a Free Account to get started with BTS Heatmaps.
About Backtested Strategies
Backtested Strategies (BTS) is a financial research publisher operated by Marquantex LLC, focused on systematic trading strategies, rigorous backtests and market tools for serious investors. BTS publishes backtests under a standardized, institutional-grade methodology that makes strategy rules, assumptions, benchmarks, trading-cost treatment, portfolio accounting and reporting conventions explicit. Its research is designed to help investors judge strategy behavior, risk, implementation demands and portfolio fit with the full structure of each test in view.
