A free ESG stock screener that publishes its losses and methodology

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Hey HN, JSS(JumpstartSignal) is a free, ESG-filtered daily stock screener. I built it after some really badly-timed quantum computing stock buys, so I felt I needed to learn more about systematic, longer-horizon approaches and the underlying technicals instead of chasing themes. Three things about it that might be of interest:<p>1. Methodology is fully documented at <a href="https:&#x2F;&#x2F;jumpstartsignal.com&#x2F;how-it-works&#x2F;" rel="nofollow">https:&#x2F;&#x2F;jumpstartsignal.com&#x2F;how-it-works&#x2F;</a> 5-stage pipeline, 54 signals tested individually plus 1,836 combinations evaluated, walk-forward validation across 25 hold periods. Nothing hand-tuned to a single backtest window.<p>2. Many wins, misses, and losses are published as case studies e.g. <a href="https:&#x2F;&#x2F;jumpstartsignal.com&#x2F;case-studies&#x2F;nvda&#x2F;" rel="nofollow">https:&#x2F;&#x2F;jumpstartsignal.com&#x2F;case-studies&#x2F;nvda&#x2F;</a> walks through the 32 times the system flagged NVDA starting at $5.44 in 2018. <a href="https:&#x2F;&#x2F;jumpstartsignal.com&#x2F;case-studies&#x2F;sedg&#x2F;" rel="nofollow">https:&#x2F;&#x2F;jumpstartsignal.com&#x2F;case-studies&#x2F;sedg&#x2F;</a> shows a -49% loss, and <a href="https:&#x2F;&#x2F;jumpstartsignal.com&#x2F;case-studies&#x2F;tsla&#x2F;" rel="nofollow">https:&#x2F;&#x2F;jumpstartsignal.com&#x2F;case-studies&#x2F;tsla&#x2F;</a> explains why the system <i>never</i> flagged Tesla (it passed Stages 1 and 2 on 207 days but only peaked at 20&#x2F;100 in scoring vs the 70 needed for OPPORTUNITY tier). <a href="https:&#x2F;&#x2F;jumpstartsignal.com&#x2F;results&#x2F;" rel="nofollow">https:&#x2F;&#x2F;jumpstartsignal.com&#x2F;results&#x2F;</a> also shows the 10 best entries alongside the 10 worst.<p>3. A genetic algorithm picked the signal weights, but constrained to maintain alpha across multiple market regimes (otherwise it overfits to a single bull market). The constraint dropped some &quot;best in backtest&quot; configurations that only worked 2018-2021.<p>Topline: 2012-2025 backtest at SPOTLIGHT + OPPORTUNITY tier produced +163% alpha vs SPY (results page has the per-trade breakdown).<p>Daily watchlist emailed free; reports + results + case studies are publicly browsable without signup.<p>Happy to take questions about methodology, what the system gets wrong, or why specific tickers landed where they did.

AI Score Reasoning

Heuristic score based on available signals. Funding: $0, Source: show_hn.

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