Show HN: A free ESG stock screener that publishes its losses and methodology

JumpstartSignal (JSS) is a free ESG-filtered stock screener with transparent methodology, publishing case studies of both successful and failed trades. It uses a genetic algorithm to optimize signal weights across market regimes, achieving +163% alpha vs SPY in a 2012-2025 backtest. The tool provides daily watchlists and public access to results, reports, and case studies.