body{font-family:system-ui,sans-serif;max-width:800px;margin:2rem auto;padding:0 1rem;color:#3d3929;background:#f5f0e8}SurgeFlow — Open Equity Data ScienceOpen data science on broad equity markets. We perform statistical testing on public market data and publish methodology transparently. Free, donation-funded — we ask users to donate to UNHCR. SurgeFlow is research, not investment advice.What we publish

Open price data with daily moving-average distance and 52-week range methodology

Turnover analysis with Amihud illiquidity and liquidity-state classification

Sector and industry data with peer-relative excess-return methodology

Fundamental ratio data: E/P, CFO/P, P/S, P/B with explicit coverage disclosure

Institutional ownership data from SEC 13F, CSRC fund disclosures, and EDINET XBRL

Macro benchmark data with valuation-regime classification

Methodology

Factor methodology: SMB, HML, WML, RMW with HAC inference and publication gates

Statistical testing with residual diagnostics and monotonicity tests

Point-in-time data controls and look-ahead-bias prevention

Data sources

Financial news dataset (US and CN) with Loughran-McDonald and FinBERT sentiment methodology

Macro indicators classified by lead/coincident/lagging/monetary/fiscal taxonomy

Cross-market disclosure systems: SEC EDGAR (US), CSRC (CN), EDINET (JP)

MissionSurgeFlow is free and donation-funded. We test markets and promote equity — both equity markets and equitable access to financial research. Users are asked to donate to UNHCR, the UN Refugee Agency.DisclaimerSurgeFlow is open data and statistical research. It is not a financial advisor, broker-dealer, investment manager, or registered financial service. Nothing on this site is investment advice. Users assume responsibility for any decisions made with the published data.Please enable JavaScript to use the interactive dashboard. Price data | Turnover data | Factor methodology | Backtesting framework | Sector data | Macro data | Institutional ownership | Fundamental data | News dataset | Research library | Support UNHCR