Turnover Acceleration Methodology — Amihud Illiquidity & Day of Control
SurgeFlow detects volume surges using turnover multiples (today vs MA10/50/200), classifies liquidity states using the Amihud (2002) illiquidity ratio, and identifies the Day of Control — the single highest-volume trading day in a stock's entire history.
Liquidity States
Four states: Information Shock (price down, liquid), Information Squeeze (price up, liquid), Liquidity Shock (price down, illiquid), Liquidity Squeeze (price up, illiquid). Classification uses 2x2 matrix of MA10 position and Amihud percentile.
Live Turnover Analysis Price Screener Factor Methodology
SurgeFlow — Open Equity Data Science
Open 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 & disclosure data across 8 markets: SEC 13F, EDINET XBRL, CSRC fund disclosures, Korea DART, HKEX DI, Taiwan TWSE/MOPS, India NSE, UK FCA
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 — disclosure feeds across 8 markets (US, CN, JP, HK, TW, KR, UK, IN; media and sentiment depth vary by market) with Loughran-McDonald and FinBERT sentiment methodology
Macro indicators classified by lead/coincident/lagging/monetary/fiscal taxonomy
Cross-market disclosure systems: SEC EDGAR (US), EDINET (JP), CSRC (CN), DART (KR), HKEX (HK), TWSE/MOPS (TW), NSE (IN), FCA (UK)
Mission
SurgeFlow 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.
Disclaimer
SurgeFlow 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 |
Privacy policy |
Terms of service